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reference designXR21B1422

MaxLinear XR21B1422

Enhanced 2-Ch Full-Speed USB UART

Overview

TopologyOther Topology
IC revision1.0

Description

XR21B1422/1424 POWER & USBXR21B1422/1424 Evaluation BoardRev. 1.0Updated 2/7/2014The XR21B1422 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 12 Mbps 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.The XR21B1422 includes an internal oscillator and does not require an external crystal/oscillator. Any UART baud rate up to 12 Mbps may be generated with this internal clock and the fractional baud rate generator.

Features

»±15kV ESD on USBD+/USBD-»USB 2.0 Compliant, Full-Speed (12Mbps)»Unique pre-programmed USB serial number»Internally generated 48MHz core clock»Enhanced UART features

  • Baud rates up to 12 Mbps
  • Fractional Baud Rate Generator
  • 512-byte TX and 512-byte RX FIFOs
  • Auto Hardware / Software Flow Control
  • Multidrop and Half-Duplex Modes
  • Auto RS-485 Half-Duplex Control
  • Selectable GPIO or Modem I/O

»Up to 10 GPIOs per channel»5V tolerant GPIO inputs»Suspend state GPIO configuration»Configurable clock output»40-pin QFN package»Industrial -40°C to +85°C Temperature Range

Typical applications

  • Security Systems / ATM Terminals
  • Building Automation / Factory and Process Control
  • USB to Serial Controllers

More information

Parts approved by MaxLinear

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT(A)
fres(MHz)
Mount
Application
Interface Type
Type
Variant
Gender
Pins
Working Voltage(V (AC))
Packaging
L(mm)
H(mm)
Operating Temperature
SamplesAvailability & Sample
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744025100
SPECWE-TPC SMT Tiny Power Inductor, 10 µH, 1 A
Simu­lation
Availability
–
Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-TPC SMT Tiny Power Inductor
Inductance10 µH
Rated Current1 A
Saturation Current1.1 A
Self Resonant Frequency41 MHz
MountSMT 
–
–
–
–
–
Pins2 
–
–
Length2.8 mm
Height2.8 mm
Operating Temperature -40 °C up to +125 °C
–Check availability
61300811121
SPECWR-PHD Pin Header - Single, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins8 
Working Voltage250 V (AC)
PackagingBag 
Length20.32 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61300211121
SPECWR-PHD Pin Header - Single, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins2 
Working Voltage250 V (AC)
PackagingBag 
Length5.08 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61300311121
SPECWR-PHD Pin Header - Single, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins3 
Working Voltage250 V (AC)
PackagingBag 
Length7.62 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61300411121
SPECWR-PHD Pin Header - Single, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins4 
Working Voltage250 V (AC)
PackagingBag 
Length10.16 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61300611121
SPECWR-PHD Pin Header - Single, –, 3 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins6 
Working Voltage250 V (AC)
PackagingBag 
Length15.24 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61300821121
SPECWR-PHD Pin Header - Dual, –, 3 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins8 
Working Voltage250 V (AC)
PackagingBag 
Length10.16 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61301011121
SPECWR-PHD Pin Header - Single, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins10 
Working Voltage250 V (AC)
PackagingBag 
Length25.4 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61301021121
SPECWR-PHD Pin Header - Dual, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Dual
–
Rated Current3 A
–
–
MountTHT 
–
–
TypeStraight 
–
GenderPin Header 
Pins10 
Working Voltage250 V (AC)
PackagingBag 
Length12.7 mm
–
Operating Temperature -40 °C up to +105 °C
–Check availability
61400416121
SPECWR-USB Standard Connectors, –, 1.5 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-USB Standard Connectors
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Rated Current1.5 A
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–
MountTHT 
ApplicationUSB 2.0 
Interface TypeType B 
TypeHorizontal 
–
GenderReceptacle 
Pins4 
Working Voltage30 V (AC)
PackagingTray 
–
–
Operating Temperature -40 °C up to +105 °C
–Check availability
618009211721
SPECWR-DSUB PCB, –, 3 A
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-DSUB PCB
–
Rated Current3 A
–
–
–
–
–
TypeAngled 
Variantwithout Hex Screw 
GenderMale 
Pins9 
Working Voltage125 V (AC)
PackagingTray 
Length30.8 mm
–
Operating Temperature -55 °C up to +105 °C
–Check availability