June 3, 2026
AI data centers demand scalable, high-density control-plane connectivity. MaxLinear USB UART solutions are designed for rack-scale performance, making them a TOP solution for demanding data-center architectures.
MaxLinear announced the expansion of its USB UART portfolio with the introduction of the Coronado™ (MxL81424) and Laguna™ (MxL81108) families. Their expanded USB UART portfolio is designed specifically for these environments, enabling our hyperscaler customers and OEMs to deploy scalable, resilient, and flexible control-plane connectivity while maintaining performance and supply continuity.
As hyperscale AI data center deployments drive unprecedented rack density and system complexity, reliable out-of-band management infrastructure has become mission-critical. MaxLinear’s latest portfolio expansion directly addresses these challenges by delivering high-concurrency, space-efficient, and scalable console connectivity for next-generation AI platforms, including Universal Baseboards (UBB), multi-node systems, and rack-scale architectures.
The Coronado™ and Laguna™ USB UART family of devices provide the foundational connectivity for console access, system bring‑up, monitoring, configuration, and service operations across servers, storage systems, network equipment, and rack‑level management controllers.
Optimized for Control-Plane Performance at AI Data Center Rack Scale
The new Coronado™ and Laguna™ USB UART devices support USB 2.0 and integrate enhanced multi‑channel UART functionality to support dense, high node count environments where deterministic access, operational uptime, and reliability are critical.
Laguna™ (MxL81108): Drop-In flexibility for scalable deployment
The MxL81108 is designed to accelerate adoption and simplify transitions in existing designs:
More productinformation - MxL81424
The MxL81424 is an enhanced universal asynchronous receiver and transmitter (UART) bridge to USB interface. The USB interface is fully compliant to the USB 2.0 (full speed) specification with 12Mbps USB data transfer rate. The USB interface also supports USB suspend, resume, and remote wakeup operations. The USB Vendor ID, Product ID, power mode, remote wakeup support, maximum power, and numerous other settings may be programmed in the on-chip OTP memory via the USB interface.
It includes an internal oscillator and does not require an external crystal/oscillator. Any UART baud rate from 300 bps to 12Mbps may be generated with this internal clock and the fractional baud rate generator.
The UART pins for each port may also be configured as GPIO; direction, state, output driver type, and input pull-up or pull-down resistors are programmed either through on chip OTP, or on the fly via memory mapped registers.
Large 512-byte Tx and Rx FIFOs prevent buffer overflow errors and optimize data throughput. Automatic half duplex direction control and optional multi drop (9-bit) mode simplify both hardware and software in half-duplex RS-485 applications. Wide mode allows for each individual received character to be monitored for errors.
The MxL81424 uses the native OS CDC-ACM driver or a MaxLinear supplied custom driver. MaxLinear provides WHQL-certified software drivers for Windows 2000, XP, Vista, 7, 8, 8.1, 10, and 11 as well as custom software drivers for Linux. Full source code is available.
The MxL81424 operates from a single 5V or 3.3V power supply. When powered with 5V input, a regulated 3.3V output is supplied.
| Information | Enhanced 4-Ch Full-Speed USB UART |
|---|---|
| Data Bus Interface | USB 2.0 |
| # of Channels | 4 |
| Max Data Rate 5V (Mbps) | 12 |
| Max Data Rate 3.3V (Mbps) | 12 |
| Tx FIFO (Bytes) | 512 |
| Rx FIFO (Bytes) | 512 |
| Auto RS-485 | ✔ |
| Auto Flow Control | ✔ |
| Auto Half-Duplex Control | ✔ |
| Multidrop (9-bit) Mode | ✔ |
| Fractional Baud Rate Generator | ✔ |
| Power Down Mode | ✔ |
| 5V Tolerant Inputs | ✔ |
| IrDA Sup | ✔ |
| Supply Voltage Range VCC (V) | 3.0 to 3.6, 4.4 to 5.25 |
| Max UART/GPIO Input Voltage (V) | 5.5 |
| Max UART/GPIO Output Voltage (V) | 1.8-3.6 |
| Temperature Range (°C) | -40 to 85 |
| Package | QFN32 |
| X-Y Dimension (mm) | 5x5 |
| Part Number | Pkg Code | Min Temp | Max Temp | |
|---|---|---|---|---|
| MXL81424-AQB-R | -40 | 85 | ||
| MXL81424-AQB-EVK-1 | Board |
Availability
Coronado™ (MxL81424): Samples expected in June 2026, production scheduled for the second half of 2026.
More productinformation - MxL81108
The MxL81108 is an enhanced universal asynchronous receiver and transmitter (UART) bridge to USB interface. The USB interface is fully compliant to the USB 2.0 (full speed) specification with 12Mbps USB data transfer rate. The USB interface also supports USB suspend, resume, and remote wakeup operations. The USB Vendor ID, Product ID, power mode, remote wakeup support, maximum power, and numerous other settings may be programmed in the on-chip OTP memory via the USB interface.
It includes an internal oscillator and does not require an external crystal/oscillator. Any UART baud rate from 300 bps to 12Mbps may be generated with this internal clock and the fractional baud rate generator.
The UART pins for each port may also be configured as GPIO; direction, state, output driver type, and input pull-up or pull-down resistors are programmed either through on chip OTP, or on the fly via memory mapped registers.
Large 512-byte Tx and Rx FIFOs prevent buffer overflow errors and optimize data throughput. Automatic half duplex direction control and optional multi drop (9-bit) mode simplify both hardware and software in half-duplex RS-485 applications. Wide mode allows for each individual received character to be monitored for errors.
The MxL81108 uses the native OS CDC-ACM driver or a MaxLinear supplied custom driver. MaxLinear provides WHQL-certified software drivers for Windows 2000, XP, Vista, 7, 8, 8.1, 10, and 11 as well as custom software drivers for Linux. Full source code is available.
The MxL81108 operates from a single 5V or 3.3V power supply. When powered with 5V input, a regulated 3.3V output is supplied.
| Information | Enhanced 4-Ch Full-Speed USB UART |
|---|---|
| Data Bus Interface | USB 2.0 |
| # of Channels | 4 |
| Max Data Rate 5V (Mbps) | 12 |
| Max Data Rate 3.3V (Mbps) | 12 |
| Tx FIFO (Bytes) | 512 |
| Rx FIFO (Bytes) | 512 |
| Auto RS-485 | ✔ |
| Auto Flow Control | ✔ |
| Auto Half-Duplex Control | ✔ |
| Multidrop (9-bit) Mode | ✔ |
| Fractional Baud Rate Generator | ✔ |
| Power Down Mode | ✔ |
| 5V Tolerant Inputs | ✔ |
| IrDA Sup | ✔ |
| Supply Voltage Range VCC (V) | 3.0 to 3.6, 4.4 to 5.25 |
| Max UART/GPIO Input Voltage (V) | 5.5 |
| Max UART/GPIO Output Voltage (V) | 1.8-3.6 |
| Temperature Range (°C) | -40 to 85 |
| Package | LGA64 |
| X-Y Dimension (mm) | 9x9 |
| Part Number | Pkg Code | Min Temp | Max Temp | |
|---|---|---|---|---|
| MXL81108-AYA-R | -40 | 85 | ||
| MXL81108-AYA-EVK-1 | Board |
Availability
Laguna™ (MxL81108): Samples expected in Q3 2026, production scheduled by the end of 2026.
Contact us for more information about the Laguna™ (MxL81108) and Coronado™ (MxL81424)
Back
