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Operator
Greetings and welcome to the MaxLinear, Inc. First Quarter 2021 Earnings Call. (Operator Instructions) As a reminder, this conference is being recorded. It is now my pleasure to introduce your host, Brian Nugent. Thank you, sir. You may begin.
Brian D. Nugent - Head-IR
Thank you, operator. Good afternoon, everyone, and thank you for joining us on today's conference call to discuss MaxLinear's First Quarter 2021 Financial Results. Today's call is being hosted by Dr. Kishore Seendripu, CEO; and Steve Litchfield, Chief Financial Officer and Chief Corporate Strategy Officer. After our prepared comments, we will take questions.
Our comments today include forward-looking statements within the meaning of applicable securities laws, including statements relating to our guidance for second quarter 2021 revenue, revenue growth expectations in our principal target markets, GAAP and non-GAAP gross margin, GAAP and non-GAAP operating expense, tax expenses and effective tax rate and interest and other expense.
In addition, we will make forward-looking statements relating to trends, opportunities and uncertainties in various products and geographic markets, including, without limitation, statements concerning opportunities arising from our acquisitions of Intel's Home Gateway business and of NanoSemi, growth opportunities for our wireless infrastructure and connectivity markets and opportunities for improved revenues across our target markets.
These forward-looking statements involve substantial risks and uncertainties including integration and employee retention risks related to the acquisitions as well as risks arising more generally in our business from competition, global trade and export restrictions, potential supply constraints, the impact of the COVID-19 pandemic are dependent on a limited number of customers, average selling price trends and risks that our markets and growth opportunities may not develop as we currently expect, and that our assumptions concerning these opportunities may prove incorrect. More information on these and other risks is outlined in the Risk Factors section of our recent SEC filings, including our Form 10-K for the year ended December 31, 2020, and our first quarter 2021 Form 10-Q, which was filed today.
Any forward-looking statements are made as of today and MaxLinear has no obligation to update or revise any forward-looking statements. The first quarter 2021 earnings release is available on the Investor Relations section of our website at maxlinear.com. In addition, we report certain historical financial metrics, including net revenues, gross margins, operating expenses, income or loss from operations, interest and other expense, income taxes, net income or loss and net income or loss per share on both a GAAP and non-GAAP basis. We encourage investors to review the detailed reconciliation of our GAAP and non-GAAP presentations in the press release available on our website.
We do not provide a reconciliation of non-GAAP guidance for future periods because of the inherent uncertainty associated with our ability to project certain future charges, including stock-based compensation and its associated tax effects. Non-GAAP financial measures discussed today do not replace the presentation of MaxLinear's GAAP financial results. We are providing this information to enable investors to perform more meaningful comparisons of our operating results in a manner similar to management's analysis of our business.
Lastly, this call is also being webcast, and a replay will be available on our website for 2 weeks.
And now let me turn the call over to Kishore Seendripu, CEO of MaxLinear.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Thank you, Brian, and good afternoon, everyone. Our Q1 financial results highlight record quarterly revenue of $209.4 million, up 8% sequentially. Cash flow from operations of $40.3 million and non-GAAP gross margin of 58.6%. Our results and outlook are moderated by the industry-wide semiconductor manufacturing supply chain constraints, even as we are proactively developing strategies to minimize the impact for our customers. In Q1, our broadband access revenue stood at 59%, infrastructure at 14%, industrial and multi-market 14% and connectivity at 13% of overall revenues.
Now turning to some of the Q1 business highlights. In broadband access, end market demand remains robust, driven by continued strong MSO deployments, sustaining subscriber broadband consumption demand trends and our share gains across our target markets. Further, the breadth of our broadband access and Wi-Fi SoC assets continues to expand customer engagements on next-generation broadband access and in-home connectivity architectures.
In our connectivity business, which consists of multi-gigabit Wi-Fi, Ethernet, MoCA and G.HN technologies, shipments took a contemporary pause, owing primarily to supply constraints. We expect a strong recovery in Q2 with all 4 products growing quarter-over-quarter. We are pleased with the strong Wi-Fi design win momentum and product ramp on Wave 600, along with the adoption of our Wave 600 release to silicon. We see multiple tri-band Wi-Fi platforms ramping in 2022 which utilize the 2.54 gigahertz, 5 gigahertz and 6 gigahertz spectrum capabilities of our solutions across North America cable and service providers. Our Wi-Fi business is on track to double in 2021 and has the momentum to potentially double again in 2022. Additionally, in Q1, our MoCA shipments to our flagship U.S. telco customer and to an additional new Canadian telco customer continue to grow. We also expect our G.HN business to post double-digit growth in 2021.
During Q1, we released the industry's first quad-port Ethernet 5 optimized for 2.5 gigabit applications, which builds on our earlier success in 1 gigabit and 2.5 gigabit PHYs and 1 gigabit switches. We expect the adoption of 2.5GBASE-T to accelerate over the next several years, driven by new and growing multi-gigabit broadband applications such as 10 gigabit PON, DOCSIS 3.1 modems and Wi-Fi 6 routers as well as its mass market adoption in the enterprise industrial laptop markets. We are positioned extremely well at the front end of the 1 gigabit to 2.5 gigabit Ethernet upgrade cycle.
Moving to wireless infrastructure market. Our Q1 revenue rebounded strongly, nearly doubling quarter-over-quarter, owing to a strong recovery in wireless backhaul deployments, combined with the anticipated initial production revenue shipments from our 5G massive MIMO RF transceiver SoCs. Our current wireless infrastructure bookings momentum supports continued growth throughout the year.
In 5G axis, we also announced our partnership with Facebook on the even STAR program to develop an integrated O-RAN SoC which incorporates our state-of-the-art 5G RF transceiver, digital predistortion algorithms and open RAN functionality.
In optical data center, we are making progress towards mass production ramp of our 400G PAM4 DSP in the second half 2021, along with strong adoption of our 100G PAM4 offering by Tier 1 customers. Additionally, we are on track to sample our industry-leading new Keystone family of 5 nanometer CMOS 800 gigabit PAM4 SoC products in Q2. Keystone solidifies our ability to capitalize on the PAM4 optical interconnect market, which will dominate cloud and edge data center deployments over the next several years.
Our high-performance analog business posted strong growth in Q1 across both infrastructure and industrial multi-market applications. Despite a challenging supply chain environment in high performance analog, we believe that our lean channel inventory levels, rapidly growing design win funnel and exciting new product developments position us very favorably for growth in 2021 and beyond.
We have made significant progress in expanding our portfolio in all our end markets and are broadening our penetration and customer traction in new exciting growth markets. We believe this expanded value proposition and our enhanced target addressable market across high-growth broadband connectivity and network infrastructure, both together position us well for strong profitable growth in 2021 and beyond.
Now let me turn the call over to Mr. Steve Litchfield, our Chief Financial Officer and Chief Corporate Strategy Officer.
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Thanks, Kishore. I will first review our Q1 2021 results and then further discuss our outlook for Q2 2021. Total revenue for the quarter was $209.4 million, up 8% versus Q4. Infrastructure revenue was increased by 61% compared with Q4, above our expectations and driven by a strong recovery in both our wireless backhaul and high performance analog end markets, along with growing 5G access market contribution.
Our broadband business demonstrated strong growth during the quarter, up 10% sequentially and slightly better than our expectations, driven by upside in gateway SoC shipments. Solid demand for our broadband products is being driven by a combination of end market strength and company specific drivers, including silicon content increases and share gains. Our connectivity business was down 20% sequentially as supply constraints in Wi-Fi and Ethernet was only partially offset by growth in G.HN and MoCA.
Lastly, our industrial and multi-market business was down 1% sequentially and in line with expectations as softness in components was largely offset by strength in the HPA demand.
GAAP and non-GAAP gross margin for the first quarter was approximately 53.4% and 58.6% of revenue, up 10.7 percentage points and 80 basis points over last quarter, respectively. The delta between GAAP and non-GAAP gross margin in the first quarter is primarily driven by $10.7 million of acquisition-related intangible assets amortization in addition to $0.3 million of stock-based compensation and performance-based equity.
First quarter GAAP operating expenses were $101.8 million, down sequentially and slightly below the low end of our $103 million to $107 million guidance range. The GAAP operating expenses included stock-based compensation and stock-based bonus accruals of $19.3 million combined amortization of purchased intangible assets of $6.1 million, restructuring charges of $2.2 million and acquisition and integration costs of $1.7 million. Non-GAAP operating expenses were $72.6 million, down $3.2 million versus Q4, and at the low end of our guidance range of $72 million to $76 million. Non-GAAP operating margin for Q1 2021 of 24% was the highest level in the past 6 quarters.
Moving to the balance sheet and cash flow statement. Our cash flow generated from operating activities in the first quarter 2021 was $40.3 million, and we ended the period with $149.2 million in cash, cash equivalents and restricted cash. Our loan balance stood at $350 million exiting Q1 as we made principal payments of $20 million during the quarter, and we have subsequently paid down another $15 million. We remain consistent in our intentions around uses of cash with priorities on debt pay down and strategic acquisitions. We also purchased 2.7 million of stock late in the quarter after the Board approved the $100 million buyback program. Our days sales outstanding for the first quarter was approximately 38 days, slightly up from 32 days in the prior quarter due to shipment linearity. Our inventory turns were 4.1 compared to 4.4 in Q4.
That leads me to our guidance. We currently expect revenue in the second quarter of 2021 to be approximately $200 million to $210 million, down 2% sequentially at the midpoint of the guidance range. We expect broadband revenue to be down quarter-over-quarter as semiconductor manufacturing supply chain tightness is expected to constraint shipments below actual end market demand. We expect infrastructure revenue to be up slightly versus Q1 due to modest growth in wireless backhaul and wireless access. We expect our industrial multi-market revenue to be flat to down on a sequential basis.
Lastly, we expect our connectivity to grow double digits quarter-over-quarter with the rebound being driven by a combination of solid demand and supply improvement. While the theme of broader supply constraint continues to be prevalent across the entire industry, we continue to aggressively manage these issues in order to support our customers.
With that said, we have seen limitations dating back to the fourth quarter and believe supply will continue to be an issue through the balance of the calendar year and into the first half of 2022. This uncertainty does impact our visibility with respect to product mix.
We expect second quarter GAAP gross profit margin to be approximately 52.5% to 54.5% and non-GAAP gross profit margin to be between 58% to 60% of revenue, with the midpoint up from 40 basis points from Q1. As a reminder, our gross profit margin percentage forecast could vary plus or minus 2% depending on the product mix and other factors.
We continue to fund strategic development programs targeted at delivering strong top line growth in 2021 and beyond, with particular focus on infrastructure and connectivity initiatives and our stated goal of increasing the operating leverage in the business. We expect Q2 2021 GAAP operating expenses to increase approximately $2.7 million quarter-on-quarter to a range of $102.5 to $106.5 million, primarily driven by increased prototyping expenses and payroll-related expenses.
We expect Q2 2021 non-GAAP operating expenses to be up approximately $2.4 million versus Q1 to a range of $73 million to $77 million. We expect GAAP tax expense to be approximately 0 and a non-GAAP tax rate of 6%. We expect GAAP interest and other expense to be $3.9 million to $4.1 million and non-GAAP interest and other expense to be $3.8 million to $4 million.
In closing, we continue to see sustainable fundamental expansion across all of our addressable markets. This is largely being driven by a combination of company-specific catalysts, including new product introductions, market share gains and content per platform increases. We believe our end markets are also demonstrating favorable growth profiles due to the proliferation of global networking, in addition to the recent trend towards the incremental dependency on reliable and robust connectivity.
Our infrastructure efforts in PAM4 and 5G continue to foreshadow meaningful growth coming in 2021 and beyond as production platform ramps commence. We are also pleased with both the near term customer traction and development milestones in our Wi-Fi business. We remain steadfast in supporting customers through a dynamic market environment, which pairs accelerating demand with tight supply constraints.
We remain focused on expanding upon our recent profitability advancements and strong cash flow generation, while continuing to execute on the integration efforts as well as our organic infrastructure development. With these profitable growth initiatives, we continue to believe we are uniquely positioned to deliver strong leverage in our business in 2021.
With that, I'd like to open up the call for questions. Operator?
Operator
(Operator Instructions) Our first question comes from Tore Svanberg with Stifel.
Tore Egil Svanberg - MD
Congratulations on the record results. First question is on capacity. Can you just add a little bit of color on what's going on there? What's some of the puts and takes are, especially when I think about your connectivity business being hampered a bit this quarter, but relief is coming next quarter, while broadband is the other way around. So if you could just add a little bit of all the color there that would be great.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes, Tore, thanks for joining. So yes, look, I think supply constraints are definitely across the board in all of our end markets, across all of our products. Some are worse than others. I think as I mentioned before, I think in the MaxLinear case, in particular, it's probably a little more back-end constrained than front end constrained. As far as the mix that we highlighted, yes, we did see connectivity impacted a little bit more in Q1, no doubt about that, but we're confident that we'll see that pick back up in Q2. So I'm not concerned about the mix quarter-to-quarter between those particular end markets, but we are working very hard to make improvements on the supply chain situations, as we've kind of highlighted in the call.
Tore Egil Svanberg - MD
Very good. And on your infrastructure business, obviously, it had a tremendous quarter. And I was hoping you could just talk a little bit about the geographical contribution to that growth. I mean is this kind of like the new run rate and it can grow from here on? Because obviously, it grew significantly better than what you had expected.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes. So you're right. It did grow quite a bit. And we highlighted that we definitely saw backhaul finally recover. HPA did extremely well. We're starting to see really nice contribution from wireless access, which we're excited about and anticipating. And then looking forward to see optical really ramp-up in the second half of the year as well. So yes, I do think this is -- I don't know if it's the new normal, but it's definitely a higher level that should sustain. For a while, we have been kind of pushing that infrastructure business, anticipating it getting over $100 million, and I think you'll see it really exceed -- easily exceed that $100 million level in 2021.
Tore Egil Svanberg - MD
Great. Just one last question. Could you just give us a sense for where you expect the inventory days to be longer term for the new business model now? You're obviously slightly below 100 days right now, but where are you trying to sort of get the inventory day level to?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes, yes. So it's a tough question to answer right now, Tore. I mean, especially given the environment that we're in. With the increased business that we have, along with the supply constraints and just kind of uncertainty in the kind of global world right now, we're trying to anticipate that. We're more than likely going to have to -- we want to build up some more inventory, but we're not quite to that stage. So I can't really answer your question quite yet.
Operator
Our next question comes from Ananda Baruah with Loop Capital Markets.
Ananda Prosad Baruah - MD
Congrats on the strong execution. I guess a couple, if I could, Kishore. You mentioned when you were talking about, and Steve, this is actually you, I think you gave the broadband guidance. But one of the remarks was supply constraints around broadband, demand remains stronger than supply. But Kishore, just a moment ago, I think you also said that, that's generally across the business. And so really, can you just clarify, is it across the business that demand is stronger than supply? I guess you said your supply constrained across the business. Is it also the case that demand is meaningfully stronger than supply across the business? And then with regards to broadband specifically, is there any sense of how much revenue you're -- sort of how much demand you're not able to meet right now? And then I have a quick follow-up.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes. Well, so let me address that question. In general, at this point, right, we have a very, very strong bookings in place and there are several factors that contribute to it. Obviously, the supply constraints drive the exceptional booking. However, beyond that, we have new product cycles ramping across connectivity and our new product initiatives, the infrastructure. So we have a little bit more, what I call, real demand that is coming about due to the investments we have made in the past. And security capacity for those is our biggest goal right now. And so to that extent, we have constraints across the board.
Over and above that, on the broadband side, there's very strong demand that is -- seems very self-sustaining or sustaining due to, I think, a secular situation in terms of broadband demand consumption on the subscriber side. So we don't see any let up in the demand for product or the deployments at the end carriers and operators. So I would say we're in a great place, great product cycles that are building up some momentum here. Infrastructure is beginning to show good sort of spontaneity in the growth here. And so we are really constrained by supply on how much we can share. And we do not believe our issues are related to overbooking of product from customers. It is real demand that we -- that is mostly nonperishable, and we will be able to fulfill as the supply chain eases up a bit as we bring more capacity online.
Ananda Prosad Baruah - MD
That's fantastic context, Kishore. I appreciate it. And then a quick follow-up to that is you mentioned in the press release, I just want to ask you, I think this is your comment. You feel increasingly confident in the company's outlook for the remainder of this year. So would you mind -- I mean, would you be able to sort of give us some sense of what that outlook is since you mentioned it in the press release that you feel confident in it? And that's it for me.
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Yes. Thanks, Anand. So -- well, I'm not sure we only guide 1 quarter out. So we're not going to give any guidance beyond that. We do see supply constraints continuing, as I mentioned in the prepared remarks in the second half and into the first half of 2022. I'll reiterate what Kishore said, the demand is extremely strong across all of our end markets. I would say that we've seen a real fundamental shift in the broadband markets in general, right? I mean, connectivity has been a big play because these are new products for us. They're content increases, which is very meaningful. But I think you're also seeing the operators, telecom and cable really starting to invest. I think as we look out over the next 3 to 5 years, you're going to see a substantial increase in the markets there in the amount of spend that these guys intend to make.
Operator
Our next question comes from Quinn Bolton with Needham.
Michelle Waller - Associate
This is Michelle on for Quinn. Congrats on the solid results. So just two quick ones for me. Can you guys give us an update on the next-generation 5G cellular transceiver the 8x8 massive MIMO cellular transceiver?
And then the second question, just between the supply constraints and the elevated shipping costs for COVID -- due to COVID and so on. We're just wondering how you guys feel about the target for the 60% gross margins at the exit -- exiting this calendar year? Do you guys still feel comfortable with that? I know you don't got more than a quarter out, but that -- I believe that was the target you guys had mentioned after closing the Intel acquisition.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Michelle, I'll answer the first part of the question regarding the 5G product. We were the industry leaders in terms of launching our 8x8 RF transceiver. And even in our 4x4 massive MIMO plus generation product, we were the only ones to support 400 megahertz of bandwidth throughput that spans all the way to 6 gigahertz, right, not just the lower frequency bands. Obviously, we are now production ready, and we got the garnering design wins for the product. And obviously, our competition is mimicking what we are doing. So we expect to be gathering some momentum in design wins as we speak. Obviously, the slowdown and what happened in China has been a setback for us. And however, we are gaining meaningful design wins at various OEMs.
And as we move forward and look in the next 18 months, we'll be tallying up those wins that should convert into shipments on the 8x8 product. Today, most -- the shipments that have begun for our products are primarily in the 4x4 product, which we were not incumbents. Remember that we were the ones who came from behind to enter this market. So -- but we're very pleased that we were the leaders. We launched 8x8 and the competition is now playing catch up. Obviously, they're strong. They have incurred positions. However, eventually, we will win. That's our conviction. Okay. Steve?
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Yes. Michelle, on your supply constraint question, I think tying back to gross margins. Yes, I don't think anything's changed as far as our expectation that we hit that 60% point exiting the year. Definitely, we're seeing price increases in a number of places, right, and as many of our peers are seeing across the industry. So we're working very hard. I mean our real priority right now is just to get supply. Demand has been extremely strong, and we're doing our best to get supply as quick as we can.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
I want to add that mix will have an important contribution in gross margin. And so it's going to be a balance between our infrastructure products and non-infrastructure products. So we wait to see how that mix plays out. But for now, we only are guiding the next quarter out.
Operator
Our next question comes from Suji Desilva with ROTH Capital.
Suji Desilva - MD & Senior Research Analyst
Congratulations on the strong quarter. Perhaps first on the infrastructure optical ramp. I want to clarify, you said 400 gig. You expect the second half of this year, you'll start to see contribution there. And I just want to get a real sixth sense of what kind of linearity initial shipment levels we can expect out of the gate or whether it takes several quarters to ramp up?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
This is being such a tough one to answer, Suji. On 400 gig, we were the first ones to enter the market as well. And personally, I've been surprised how the market sort of plays out in terms of our own customers and to the end data center player. So at this point, we feel we're making good progress towards ramp in the second half. But I still do not have a good sense of linear or otherwise, right? And in this world of trying to secure supply for the new product initiatives, how that affects the ordering patterns at the end customer is also not very clear right now. So the good news is we are making progress and are feeling increasingly confident of a ramp in the second half. However, I cannot give you more color on the linearity of those shipments.
Suji Desilva - MD & Senior Research Analyst
Yes. I can also imagine optical being a tricky supply chain as well. So I understand that. And then moving over to the broadband business, the Wi-Fi. Can you help us understand if the upgrades to Wi-Fi 6, Wi-Fi 6E, tri-band, sweeps in MaxLinear where you weren't before? Or does it -- is an upgrade of your prior patent? If so, what's the content increase? Give a sense of how that those upgrade will help you guys.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
It's a mix of both going on. We have products that are shipping, what we call the Wave 500. This is a pre -- this is before the 6 gigahertz band was added to the Wi-Fi product lines, we have Wave 600. That's a tri-band solution, but it's called Release 1. It has got -- and then there's the Wi-Fi 6E 2 version, which is the increased data throughput, better utilization of air capacity, multi-user MIMO, that's called the Release 2 silicon. So all of those are getting designed in or ramping in production, while our PON quantity is increasing even with the older generation products.
The good news is also we're winning market share because we have started initial foray into the fiber platforms. I hope to share a lot of good news in the near future because fiber is a huge growth opportunity for us in front of us and as a full platform ownership. So I think here, the goal is to get as much supply as possible, right, so that we can ship as much content as possible on new platforms. And expand our market share because we really are in a great place to do that.
Operator
Our next question comes from Alessandra Vecchi with William Blair.
Alessandra Maria Elena Vecchi - Research Analyst
Congrats on the quarter. Just a quick question on the operating expenses. I feel like I ask you guys this every quarter, but you've done such a tremendous job holding those costs down. I think I remember discussion last quarter about some mass costs coming in Q2 or Q3. Is the sort of the streamlined OpEx in the Q2 guidance a function of the mass costs hitting in Q3? Or is there something else going on there?
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Alex, good to chat with you today. So from an OpEx standpoint, so as kind of expected, we did anticipate this going up. There were some payroll increases as well as some mass additions in Q2. So we do see it going up not quite as much as I think what we had originally expected. But some of those costs, I suspect, will push into the second half of the year. So I mean, net-net, I think it's a little bit better than kind of what we went into the year with. But there were some of those costs that will push out into Q3.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
But to answer your question, mass cost related with the PON animated product, which we just talked about in my -- in the call, the Keystone product is part of those increased expenses, and some of it may push out into Q3.
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Alex, just to further clarify, though, the bigger 5-nanometer stuff will hit next year, though. And so that's not anticipated in the first half of this year.
Alessandra Maria Elena Vecchi - Research Analyst
Okay. That helps. That helps. And then just on the broadband side, heading into the quarter, there was some -- there's been investor concern, right, that at some point, because of the work-from-home trends, the broadband revenue would sort of trend down or moderate in the back half of the year. Obviously, we're seeing a little moderation in Q2 because of the constraints. But I guess what I'm trying to go with that is, if the supply is below the demand and you have all these drivers in terms of increased context and the operators finally starting to spend a little bit more and open up the purse strings. Does that sort of alleviate the original worries in Q1 of maybe a back half tail off or a 2022 tail off?
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
So I think the best way to answer that. So first of all, I think, really, I mean, what's happened kind of post-COVID. I think you've actually -- you've seen this acceleration of the cycle that we've been through where operators don't spend, and we were starting to see the beginning of the cycle where they would start to spend, we saw a lot of that increased demand start because of work from home. But I think what you've seen more recently and what you've heard from a lot of our peers, our customers, operators, is that you're probably going to see a multiyear cycle. I think going into this, even the acquisition of Intel, we had highlighted numerous times that this broadband business would probably grow in the kind of low single digits. I think at this point, based on visibility that we have, feedback from operators and customers is that, that could be up mid- to high single digits going forward. And then hopefully, we'll see some additional content increases and share gains on top of that.
So yes, I think the world has changed. I think you've heard a lot of this commentary about the importance that the operators are placing on the home and wanting to really control and drive services and things like that, that they're going to continue to invest further. And I think that started to really shift in our own business. And so that's really driving that outlook. So yes, we would agree that things have changed a little bit. Demand has definitely picked up quite a bit. And really, on top of that, I think as you look out over multiple years, you're going to see more of that spending going forward.
Operator
Our next question comes from Christopher Rolland with Susquehanna.
Christopher Adam Jackson Rolland - Senior Analyst
I want to dig into the supply situation a little bit more here. You mentioned it was more back end. Is this a substrate issue that most people are having? Or is this something else like test or packaging? And what is the path towards kind of equilibrium look like there? And is there any way that us analysts can get a sense of the size of these constraints or how kind of the various pieces are moving? Are we having revenue push from Q1 to Q2 or Q2 to Q3? How should we be thinking about this?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes. Chris, I wish I could tell you. So we are working very hard. I mean it's all of the above. I mean, everything substrates, lead frames, wire bonders that you've heard from numerous people. We're seeing a lot of those challenges. We do expect to see them through the rest of this year. Hopefully, they ease in each subsequent quarter, but there's no guarantee of that. And the lead times have stretched tremendously, especially on the substrate side. So yes, I mean, we've got some challenges that we've got to work through. Fortunately, we've got a lot of demand. We've got a creative team, and we've been working closely with our suppliers, and we're also coordinating with our customers as well, trying to do what we can and cooperate with them to kind of maximize this output.
Christopher Adam Jackson Rolland - Senior Analyst
Okay. And then maybe we can -- you just mentioned lead times, so maybe dig in there a little bit more. Maybe talk about where they were even 6 months or a year ago? Where they are now? And talk about this and maybe in the context of bookings and backlog here. Have we -- have you guys seen considerably more bookings than you're able to bill right now? Is that backlog building right now? And can you give us any sort of visibility into that backlog, what it might look like now? And what this means for billings for you guys in future quarters?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Yes. I mean, look, I think us, I mean, pretty consistent with what we've seen from others, I mean you're seeing lead times, quoting lead times up to a year in advance. And so 52 weeks is a long time to get product. And so we definitely have seen bookings increase quite dramatically. And so our backlogs increased. We've heard other peers talk about booking out an entire year. I mean, we're definitely seeing that, right? And so we're very confident. We've got great visibility. It's important that customers are kind of getting in line, and I think they've been reacting to make sure that they're scheduling out their own needs. And so we do have incredible visibility at this point. And so that really helps from a planning perspective and gives us a lot more confidence as we're forecasting the year, albeit somewhat tough in the short term with some of the tighter supply constraints.
Operator
Our next question comes from Bill Peterson with JPMorgan.
William Chapman Peterson - Analyst
Congrats on the results. Trying to ask the sort of supply demand questions a little bit differently. I know you only guide 1 quarter at a time, and that's fair. But I guess we see here how the impact on broadband is with the sequential decline even amidst strong demand, while connectivity, obviously, is up. But is the demand such that can you drive, I guess, sequential growth into the third and fourth quarter across your businesses? Is it demand supportive of that? And do you expect this data supply could be supportive of growth in the back half across your various segments?
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Yes, Bill, these are all great questions. They're awful hard to answer when you don't have that visibility. But I mean, look, I guess the best thing that I can say is that I think we absolutely continue to see very tight constraints in Q2 and Q3. I think we're optimistic, things start to improve in Q4 and into next year, but there's no guarantees on these things. So that's my take on the overall supply chain.
I guess I'd add, and I don't know if this is part of your question or not. But on the broadband and connectivity side, just to maybe echo what you've heard in our prepared remarks and what Kishore shared already. I do feel confident that you're going to continue to see growth there. I mean, as I look into next year, we're continuing to see really nice growth in that business from a year-over-year perspective. And so supply chain constraints are going to push some of that to the back half of the year and into '22. But I mean, we're seeing very solid demand in '22 already.
William Chapman Peterson - Analyst
That's really good color. Maybe more specifically, coming to the infrastructure and in particular access. We're hearing more about O-RAN coming. You kind of mentioned the Facebook opportunity. On one hand, it feels like it's still 2 years away. But I guess, when do you really expect some of these O-RAN developments to start? And how is Maxim your position? You talked about 8x8, but obviously, we've seen some announcements from some of your peers that they're working closely with some of the compute companies or other companies that have already sort of started some initial O-RAN deployments?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Bill, obviously, we are working with all of those. If you're on the Facebook event STAR program, they're all-natural allies and partners and cool developers on the full solution. And so as being selected at the front end transceiver, DFP, O-RAN, single chip or macro base station applications, we are a big part of that game plan.
Regarding things pushing out 2 years on shipments, my gosh, I mean, we've been investing for 3 years now in wireless infrastructure. And it seems like this is the nature of the beast. So I think that if you are going to be invest infrastructure, and this is good in the optical side as well is that you are in for the long haul. We are committed. The TAM is wonderful. It's very high-quality product that really very complementary to our great engineering skills. And so we are in this for real and for the long term.
So while they live in this quarterly world of earnings, this thing, my focus is the long term. And I think we should feel really, really good because we combine the analog RF mixed-signal capabilities with really high end at the tip of the spear 5-nanometer technology capabilities. I dare say among the players that are present today in this ecosystem, maybe there'll be future ones, you can't pick anybody who can match us right now, right? It's a matter of getting into the customer and getting the sales to ramp, and that's going to take at their pace. And that's okay. I've been patient now for 15 years in my life. I've got 15 more to go. So...
Operator
Next question comes from Sam Peterman with Craig-Hallum Capital Group.
Sam Peterman
Sam on for Richard here. I want to ask about MIMO. I'm curious what kind of share you guys think you can get with your SoCs from MIMO, particularly the 8x8 that you're coming to market, towards the leading edge with. You've named Texas Instruments and ADI is your biggest competitors. Curious how you expect share to shake out? And does Nokia ramping their restock SoCs in 2021 effect that at all?
Kishore Seendripu - Co-Founder, Chairman, CEO & President
You asked a very, very hard question because nobody is shipping 8x8 right now. Have some design wins being awarded, yes. And you really need to keep in mind that the Chinese OEMs are not part of the configuration right now for the most part, for anybody. They are now reverting to the older platforms in shipments given the regulatory restrictions, trade restrictions that both Huawei has been put under. So now the dynamic has changed. And 8x8 is going to be driven by the Western OEMs and the Japanese and the Korean OEMs, and there, we are really very competitive and actively engaged. And among the ones that have been selected, we have won a couple. And so I think ultimately, this is going to be a 2 player market on the transceiver space, and we hope to be one of the two. And that's what we are focused on closing out on.
Sam Peterman
Okay. Great. That's helpful. And then just a quick follow-up. On broadband, especially in Wi-Fi. You've noted that both content and share have been increasing in recent quarters. So I'm curious how you characterize the split between content share and driving broadband growth this quarter? And if you expect one or the other to be a bigger driver of performance next quarter? And I'd be curious to if that answer would be different, absent the supply constraints you've talked about.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
I think let's keep supply trade constraint completely out of the discussion here, so that it gives you a sense of a flavor, right? If you think about -- you rewind back the clock about 2 years ago, and if you look at where the Intel Connected Home business was in terms of the digital side of the SoC and MaxLinear at the front end, those platforms had Wi-Fi from third players.
And then you fast forward to now, together, we have all the Wi-Fi. We have the Ethernet. We have the base bands at the front end. And more importantly, the ASP of Wi-Fi from 3 years ago to now or more than doubled or even tripled this thing. So in a way, the Wi-Fi is the single biggest BOM element on the platform now. So it's really an outsized component on the platform. And it will continue to be even more so as operators are trying to take control of your home and provide services in the home and connectivity inside the home.
So I would say that really at least a doubling of the BOM is and from a TAM perspective from 3 years ago. So yes, we are benefiting, I think, substantially more on BOM increase as we move forward. At the same time, a couple of operators, they are gaining more share. So if you combine the two, you have a multiplicative effect. So as Steve said, we are feeling pretty strong that the operator business is entering a big spending cycle, investment cycle, and we will be very strong beneficiaries of that over the next few years to come.
Operator
Our next question comes from Tim Savageaux with Northland Capital Markets.
Timothy Paul Savageaux - MD & Senior Research Analyst
Congrats on the results. And so I hopped in a little earlier because I think you addressed a little bit of this, but maybe we can go into it. That really concerns growth in sort of the broadband connected home area. And you've already said, you can see the prospects for mid- to high single-digit growth instead of low-single-digit growth. I guess I would try and juxtapose that against your biggest competitor, having an event recently and talking about double-digit growth potential for that $3 billion piece of their broadband IC business. And I think there are areas in which you do and don't overlap, particularly on the broadband infrastructure side, but a lot of overlap in CPE and connectivity. So I'd be interested in your thoughts on the potential for double-digit growth in that group, although I know I'm getting ahead of myself because you just raised it from low to high singles. Any comment could be appreciated.
Steven G. Litchfield - CFO & Chief Corporate Strategy Officer
Yes. Well, I'll jump in first. There's no hedging going on here. We're both equally in this market. Yes, they have some -- I think you're aware, they have some infrastructure business that we don't have, but there was no hedging. I think it very well could be double-digit growth. And the feedback that we're getting, the market traction that we're getting, insights that we're seeing from our customers, it absolutely can be double-digit growth.
Operator
There are no further questions at this time. I'd like to turn the call back to management for any closing remarks.
Kishore Seendripu - Co-Founder, Chairman, CEO & President
Thank you, operator. We will be participating at the following upcoming conferences during Q2. We'll be at the Needham Technology and Media Conference on May 18; at the JPMorgan Global Technology, Media and Communications Conference on May 24; the Craig-Hallum Institutional Investor Conference on June 2; at the Cowen Annual TMT Conference on June 3; and at the Stifel Cross Sector Insight on June 8 to June 10. We hope to meet many of you there, and we look forward to relating to your further progress on our outlook. Thank you.
Operator
Ladies and gentlemen, this concludes today's web conference. You may now disconnect your lines at this time. Thank you for your participation, and have a great day.