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
Select Image Part # Mfr. Description Datasheet Availability Pricing (PEN) 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 26,166In Stock
Min.: 1
Mult.: 1


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

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24 22,433In Stock
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24 7,274In Stock
Min.: 1
Mult.: 1

Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24 8,355In Stock
21,000Expected 10/12/2026
Min.: 1
Mult.: 1
: 1,500


Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64 2,136In Stock
3,900Expected 11/3/2026
Min.: 1
Mult.: 1


Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64 18,577In Stock
Min.: 1
Mult.: 1
: 2,500

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

Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24 6,127In Stock
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20 15,870In Stock
12,600Expected 10/23/2026
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20 44,533In Stock
63,000Expected 1/15/2027
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24 2,636In Stock
Min.: 1
Mult.: 1


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

Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN28 669In Stock
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24 4,625In Stock
22,932On Order
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USB to UART Bridge QFN28 26In Stock
62,586On Order
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28 326In Stock
22,995Expected 1/15/2027
Min.: 1
Mult.: 1

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24 2,214In Stock
66,000Expected 1/15/2027
Min.: 1
Mult.: 1
: 1,500

Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28 58In Stock
54,000Expected 1/15/2027
Min.: 1
Mult.: 1
: 1,500

Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28 163In Stock
4,500Expected 10/16/2026
Min.: 1
Mult.: 1
: 1,500

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

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