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 (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 I/O Controller Interface IC HID USB to UART Bridge QFN24
Datasheet
26,166In Stock
Min.: 1
Mult.: 1

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

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 I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
22,433In Stock
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
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
7,274In Stock
A tariff of 38% may be applied if shipping to the United States.
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
7,253In Stock
21,000Expected 10/12/2026
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
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
2,136In Stock
3,900Expected 11/3/2026
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 USB to Quad UART Bridge QFN64
Datasheet
18,577In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

I/O Controller Interface IC SMD/SMT QFN-64
Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
5,695In 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
6,127In Stock
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
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
15,782In Stock
12,600Expected 10/23/2026
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 QFN20
Datasheet
43,033In Stock
63,000Expected 1/15/2027
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-20
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
2,636In Stock
A tariff of 38% may be applied if shipping to the United States.
Min.: 1
Mult.: 1

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

Silicon Labs I/O Controller Interface IC HID USB to UART bridge
Datasheet
4,023In Stock
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500

I/O Controller Interface IC HID USB to UART Bridges UART SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC HID USB to UART Bridge QFN28
Datasheet
669In Stock
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-28
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24
Datasheet
2,189In Stock
22,932On Order
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 QFN24
Datasheet
1,699In Stock
66,000Expected 1/15/2027
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
Min.: 1
Mult.: 1
: 1,500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-24
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
1,982In Stock
62,756On 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 USBXpress - USB to UART Bridge QFN28
Datasheet
46In Stock
22,995Expected 1/15/2027
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 QFN28
Datasheet
58In Stock
54,000Expected 1/15/2027
MouseReel Available
A tariff of 38% may be applied if shipping to the United States.
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
63In Stock
4,500Expected 10/16/2026
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 QFN28
Datasheet
12,007On Order
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs USB Interface IC USB to UART Bridge QFN28
Datasheet
Non-Stocked Lead-Time 29 Weeks
Min.: 1
Mult.: 1

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