CP21xx Smart Interface ICs

Silicon Labs CP21xx Smart Interface ICs leverage Silicon Labs' world-class mixed-signal design expertise to provide a family of high-performance interface devices that enable designers to differentiate their products and speed time-to-market. These mixed-signal IC products span different technologies and standards to enable quick and effective communication between two devices or functionalities. These devices include USB to UART bridges, ISB to I2S digital audio bridges, HID USB to SMBus/I2C bridges, and SPI to I2C bridge with GPIO port expanders, and USB to SPI bridges.

Types of Semiconductors
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Results: 22
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 Mfr.
Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN24
Datasheet
26,166In Stock
Min.: 1
Mult.: 1

Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24
Datasheet
12,716In Stock
21,000Expected 10/12/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500


Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64
Datasheet
2,212In Stock
Min.: 1
Mult.: 1


Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64
Datasheet
19,049In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
5,695In Stock
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
6,169In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20
Datasheet
16,656In Stock
12,600Expected 1/15/2027
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24
Datasheet
6,990In Stock
22,932On Order
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20
Datasheet
44,839In Stock
63,000Expected 2/19/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
2,320In Stock
4,500Expected 10/30/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
2,081In Stock
1,771Expected 8/11/2026
Min.: 1
Mult.: 1

Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24
Datasheet
2,713In Stock
5,693Expected 8/11/2026
Min.: 1
Mult.: 1


Silicon Labs I/O Controller Interface IC HID USB to UART bridge
Datasheet
4,023In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN28
Datasheet
694In Stock
Min.: 1
Mult.: 1


Silicon Labs I/O Controller Interface IC HID USB to UART bridge
Datasheet
3,314In Stock
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28
Datasheet
58In Stock
22,995Expected 2/5/2027
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24
Datasheet
61In Stock
66,000Expected 2/5/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28
Datasheet
58In Stock
54,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
22,480Expected 8/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
65,155On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
12,007On Order
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
Non-Stocked Lead-Time 29 Weeks
Min.: 1
Mult.: 1