What should engineers review before using XR21B1422IL40-F?

Review VCC_REG, VCC, VIO, VBUS_SENSE and USB decoupling connections, select the intended bus-powered or self-powered mode, and configure UART/GPIO functions through the supported driver or USB register commands.

What is the pinout of XR21B1422IL40-F?

Use the XR21B1422IL40-F datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about XR21B1422IL40-F pinout to locate pins, power rails, and interface signals before layout.

XR21B1422IL40-F Datasheet, Specs, Alternatives & ECAD | MaxLinear, Inc.

AI summary

XR21B1422IL40-F is a dual-channel, full-speed USB-to-UART bridge for designs requiring two serial ports, configurable GPIO, and integrated RS-485 direction control.

Best for

Dual USB-to-UART interfaces
Industrial serial controllers
RS-485 half-duplex serial designs

Avoid if

A USB high-speed interface is required
Formal lifecycle or compliance evidence is required but unavailable

Check before use

Confirm 1.8 V to 3.6 V VIO compatibility.
Confirm the 6 mm × 6 mm 40-pin QFN footprint and exposed-pad design.
Check driver mode because CDC-ACM and custom-driver defaults differ.

Key specifications

USB interface: USB 2.0 full-speed, 12 Mbps
UART channels: 2
UART baud rate: 300 bps to 12 Mbps
FIFO depth: 512-byte TX and 512-byte RX per channel
Package: 40-pin QFN, 6.00 mm × 6.00 mm

Compliance & Environment

RoHS: RoHS Compliant
REACH: -
MSL: -
ECCN: -
HTSUS: -

Application

Industrial serial controlUSB connectivityRS-485 interfaces

Datasheet

poYBAGNo7GCAVZvnAA5uBYrTsyw711.pdf

800 KB

Datasheet AI

CAD Models

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Where to Buy

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

XR21B1422IL40-F is a MaxLinear enhanced two-channel USB 2.0 full-speed USB-to-UART bridge in a 40-pin QFN package.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is XR21B1422IL40-F?+×

What should engineers review before using XR21B1422IL40-F?+×

What is the pinout of XR21B1422IL40-F?+×