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IC manufacturers MaxLinear

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MaxLinear XR21B1421 | Demoboard XR21B1421_24 Evaluation Board

Enhanced 1-Ch Full-Speed USB HID to UART Bridge

Overview

TopologyOther Topology
IC revision1

Description

The XR21B1421 is an enhanced Universal Asynchronous Receiver and Transmitter (UART) bridge to HID class 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 no-chip OTP memory via the USB interface using either HID reports or Exar-supplied OTP programming tools.The XR21B1421 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. 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.

Features

±15kV ESD on USBD+/USBD-USB 2.0 Compliant, Full-Speed (12Mbps)Unique pre-programmed USB serial numberInternally generated 48MHz core clockEnhanced UART featuresBaud rates up to 12 MbpsFractional Baud Rate Generator512-byte TX and 512-byte RX FIFOsAuto Hardware / Software Flow ControlMultidrop and Half-Duplex ModesAuto RS-485 Half-Duplex ControlSelectable GPIO or Modem I/OUp to 10 GPIOs per channel5V tolerant GPIO inputsSuspend state GPIO configurationConfigurable clock output24-pin or 28-pin QFN packageIndustrial -40°C to +85°C Temperature Range

Typical applications

  • Uninterruptible Power Supplies / Energy Management Consoles
  • Blood Glucose Meters / Health and Fitness Wellness Monitors /
  • Portable Medical Diagnostics

More information

Products

Order Code Data­sheet Simu­lation Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Technical ReferenceApplicationInterface TypeIR
(A)
PinsRowsGenderTypeIR
(A)
PackagingMountOperating TemperatureWorking Voltage
(V (AC))
Samples
150060RS75000SPEC
7 files WL-SMCW SMT Mono-color Chip LED Waterclear 625 Red 630 250 2 AlInGaP 140 0603 1.6 0.8 0.7 Tape and Reel SMT -40 up to +85 °C
885012205037SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)100 nF ±10% 16 0402 55 GΩ X7R Class II 1 0.5 0.5 0.25 X7R0402104K016DFCT10000 -55 up to +125 °C
885012106012SPEC
7 files WCAP-CSGP MLCCs 10 V(DC)4.7 µF ±20% 10 0603 100.02 GΩ X5R Class II 1.6 0.8 0.8 0.4 X5R0603475M010DFCT10000 -55 up to +85 °C
885012207051SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)1 µF ±10% 16 0805 50.5 GΩ X7R Class II 2 1.25 1.25 0.5 X7R0805105K016DFCT10000 -55 up to +125 °C
885012107014SPEC
7 files WCAP-CSGP MLCCs 16 V(DC)10 µF ±20% 16 0805 100.01 GΩ X5R Class II 2 1.25 1.25 0.5 X5R0805106M016DFCT10000 -55 up to +85 °C
61300811121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

6 files WR-PHD 2.54 mm THT Pin Header1000 MΩ 20.32 8 Single Pin Header Straight 3 Bag THT -40 up to +105 °C 250
61300211121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

6 files WR-PHD 2.54 mm THT Pin Header1000 MΩ 5.08 2 Single Pin Header Straight 3 Bag THT -40 up to +105 °C 250
61300311121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

6 files WR-PHD 2.54 mm THT Pin Header1000 MΩ 7.62 3 Single Pin Header Straight 3 Bag THT -40 up to +105 °C 250
61300411121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

6 files WR-PHD 2.54 mm THT Pin Header1000 MΩ 10.16 4 Single Pin Header Straight 3 Bag THT -40 up to +105 °C 250
61300821121SPEC
6 files WR-PHD 2.54 mm THT Dual Pin Header1000 MΩ 10.16 3 8 Dual Pin Header Board Stacker 3 Bag THT -40 up to +105 °C 250
61301011121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

6 files WR-PHD 2.54 mm THT Pin Header1000 MΩ 25.4 10 Single Pin Header Straight 3 Bag THT -40 up to +105 °C 250
61301021121SPEC
6 files WR-PHD 2.54 mm THT Dual Pin Header1000 MΩ 12.7 10 Dual Pin Header Board Stacker 3 Bag THT -40 up to +105 °C 250
61400416121SPEC
6 files WR-COM USB 2.0 Horizontal THT1000 MΩ USB 2.0 Type B 4 Receptacle Horizontal 1.5 Tray THT -40 up to +105 °C 30
618009211721SPEC
6 files WR-DSUB 8.08 mm Male Angled PCB Connector w/o Hex Screw5000 MΩ 30.8 3 9 Male Angled 3 Tray -55 up to +105 °C 125
Order Code Data­sheet Simu­lation
150060RS75000SPEC
885012205037SPEC
885012106012SPEC
885012207051SPEC
885012107014SPEC
61300811121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

61300211121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

61300311121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

61300411121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

61300821121SPEC
61301011121SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

61301021121SPEC
61400416121SPEC
618009211721SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesλDom typ.
(nm)
Emitting ColorλPeak typ.
(nm)
IV typ.
(mcd)
VF typ.
(V)
Chip Technology50% typ.
(°)
CTol. CVR
(V (DC))
SizeDF
(%)
RISOCeramic TypeL
(mm)
W
(mm)
H
(mm)
Fl
(mm)
Technical ReferenceApplicationInterface TypeIR
(A)
PinsRowsGenderTypeIR
(A)
PackagingMountOperating TemperatureWorking Voltage
(V (AC))
Samples