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 Interface ICs
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Results: 22
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 Mfr.
Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS Product Type
Product
Type
Interface Type
Mounting Style
Package/Case
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN24
Datasheet
27,182In Stock
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24

Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64
Datasheet
6,529In Stock
15,000Expected 05/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I/O Controller Interface IC SMD/SMT QFN-64

Silicon Labs I/O Controller Interface IC HID USB to UART bridge
Datasheet
5,523In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

I/O Controller Interface IC HID USB to UART Bridges UART SMD/SMT QFN-24
Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
5,817In Stock
Min.: 1
Mult.: 1

USB Interface IC USB Controllers Bridge, USB to SMBus SMBus, USB SMD/SMT QFN-24
Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
7,327In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to SMBus SMBus, USB SMD/SMT QFN-24
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20
Datasheet
18,069In Stock
Min.: 1
Mult.: 1

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-20
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24
Datasheet
8,887In Stock
9,555Expected 05/02/2027
Min.: 1
Mult.: 1

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-24
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28
Datasheet
19,980In Stock
27,000Expected 29/01/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
2,890In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
570In Stock
7,500Expected 03/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

I/O Controller Interface IC USB to UART Bridges UART SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24
Datasheet
3,261In Stock
5,733Expected 24/07/2026
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24
Datasheet
4,801In Stock
13,500Expected 24/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

I/O Controller Interface IC USB to Dual UART Bridges UART SMD/SMT QFN-24

Silicon Labs I/O Controller Interface IC USB to Quad UART Bridge QFN64
Datasheet
298In Stock
2,600Expected 27/07/2026
Min.: 1
Mult.: 1

I/O Controller Interface IC I/O Controllers USB to Quad UART Bridge Serial SMD/SMT QFN-64
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN28
Datasheet
726In Stock
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-28

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

I/O Controller Interface IC HID USB to UART Bridges UART SMD/SMT QFN-28
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28
Datasheet
809In Stock
22,995Expected 05/02/2027
Min.: 1
Mult.: 1

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-28
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN20
Datasheet
4,545In Stock
45,000Expected 14/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-20
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24
Datasheet
5,613In Stock
66,000Expected 05/02/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
228In Stock
7,465On Order
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
42In Stock
3,822On Order
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
65,687On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART USB, UART SMD/SMT QFN-28
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
Non-Stocked Lead-Time 18 Weeks
Min.: 1,533
Mult.: 1,533

USB Interface IC USB Controllers Bridge, USB to UART USB, UART SMD/SMT QFN-28