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
Change category view
Results: 22
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (USD) 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 USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
12,688In Stock
Min.: 1
Mult.: 1

USB Interface IC USB Controllers Bridge, USB to SMBus SMBus, USB SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN24
Datasheet
28,409In Stock
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
16,443In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

USB Interface IC USB Controllers Bridge, USB to UART USB, UART SMD/SMT QFN-28
Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24
Datasheet
9,105In Stock
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
20,236In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
3,552In Stock
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 USB to Quad UART Bridge QFN64
Datasheet
7,486In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

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

Silicon Labs I/O Controller Interface IC HID USB to UART bridge
Datasheet
7,687In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
15,164In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
40,255In 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
19,837In Stock
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
15,116In Stock
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
43,600In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
6,115In Stock
13,992Expected 2026/03/06
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

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
27,770In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
1,082In Stock
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
326In Stock
1,400Expected 2026/03/06
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN28
Datasheet
1,172In 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
3,564In Stock
Min.: 1
Mult.: 1
Reel: 1,500

I/O Controller Interface IC HID USB to UART Bridges UART SMD/SMT QFN-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
9,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 UART Bridge QFN24
Datasheet
1,907Expected 2026/07/03
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 1,533
Mult.: 1,533

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