USB UARTs

MaxLinear USB UARTs provide a USB 2.0 data bus interface and are intended for peripheral or inter-system communication. The USB UARTs offer up to four UART ports in an ultra-compact package. The USB UARTs are designed for reliability in consumer and industrial environments.

Results: 15
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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Product
Type
Mounting Style
Package / Case
Standard
Speed
Data Rate
Supply Voltage - Min
Supply Voltage - Max
Operating Supply Current
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
MaxLinear USB Interface IC 1 CH FS USB UART with HID
Datasheet
185In Stock
Min.: 1
Mult.: 1

XR21B1421 USB Controllers Bridge, USB to UART SMD/SMT QFN-28 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 13 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 1 Chan FS USB UART w/ 256 Byte FIFO
Datasheet
9,514In Stock
9,000Expected 2026-08-04
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

XR21V1410 USB Controllers Bridge, USB to UART SMD/SMT QFN-16 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 20 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
MaxLinear USB Interface IC 2 CH FS USB UART= 512 Byte TX/RX FIFOs
Datasheet
1,333In Stock
Min.: 1
Mult.: 1

XR21B1422 USB Controllers Bridge, USB to UART SMD/SMT QFN-40 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 15 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 1 CH FS USB UART 512 Byte TX/RX FIFOs
Datasheet
950In Stock
Min.: 1
Mult.: 1

XR21B1420 USB Controllers Bridge, USB to UART SMD/SMT QFN-28 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 15 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 4 Chan FS USB UART
Datasheet
1,347In Stock
Min.: 1
Mult.: 1

XR21B1424 USB Controllers Bridge, USB to UART SMD/SMT LQFP-64 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 15 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 1Ch FS USB UART128B TX & 384B RX FIFO
Datasheet
658In Stock
1,960Expected 2026-12-29
Min.: 1
Mult.: 1

XR21B1411 USB Controllers Bridge, USB to UART SMD/SMT QFN-16 USB 2.0 Full Speed (FS) 12 Mb/s 4.4 V 5.25 V 11 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 1-Ch 12Mbps 48MHz Internal clock; UART
Datasheet
1,269In Stock
Min.: 1
Mult.: 1

XR21V1410 USB Controllers Bridge, USB to UART SMD/SMT QFN-16 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 20 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 2-Ch 12Mbps 48MHz Internal clock; UART
Datasheet
746In Stock
10Expected 2026-08-11
Min.: 1
Mult.: 1

XR21V1412 USB Controllers Bridge, USB to UART SMD/SMT QFN-32 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 20 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 4 CH FS USB UART 512 Byte TX/RX FIFOs
Datasheet
92In Stock
7,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

XR21B1424 USB Controllers Bridge, USB to UART SMD/SMT LQFP-64 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 15 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
MaxLinear USB Interface IC 1Ch FS USB UART128B TX & 384B RX FIFO
Datasheet
45In Stock
6,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

XR21B1411 USB Controllers Bridge, USB to UART SMD/SMT QFN-16 USB 2.0 Full Speed (FS) 12 Mb/s 4.4 V 5.25 V 11 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
MaxLinear USB Interface IC 4-Ch 12Mbps 48MHz Internal clock; UART
Datasheet
8,335Expected 2026-11-10
Min.: 1
Mult.: 1

XR21V1414 USB Controllers Bridge, USB to UART SMD/SMT TQFP-48 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 16 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC XR21V1414IM48TR-F
Datasheet
1,548On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

XR21V1414 USB Controllers Bridge, USB to UART SMD/SMT TQFP-48 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 16 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
MaxLinear USB Interface IC 1 CH FS USB UART with HID
Datasheet
Non-Stocked Lead-Time 2 Weeks
Min.: 490
Mult.: 490

XR21B1421 USB Controllers Bridge, USB to UART SMD/SMT QFN-24 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 13 mA - 40 C + 85 C Tray
MaxLinear USB Interface IC 1 CH FS USB UART 512 Byte TX/RX FIFOs
Datasheet
Non-Stocked Lead-Time 26 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

XR21B1420 USB Controllers Bridge, USB to UART SMD/SMT QFN-28 USB 2.0 Full Speed (FS) 12 Mb/s 3 V, 4.4 V 3.6 V, 5.25 V 15 mA - 40 C + 85 C Reel
MaxLinear USB Interface IC 2 Chan FS USB UART w/ 256 Byte FIFO
Datasheet
Non-Stocked Lead-Time 26 Weeks
Min.: 3,000
Mult.: 3,000
: 3,000

XR21V1412 USB Controllers Bridge, USB to UART SMD/SMT QFN-32 USB 2.0 Full Speed (FS) 12 Mb/s 2.97 V 3.63 V 16 mA - 40 C + 85 C Reel