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
27.198In 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
5.164In 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
9.442In Stock
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
9.188In Stock
15.000Expected 8/5/2026
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
5.823In 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
6.348In 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 USBXpress - USB to UART Bridge QFN20
Datasheet
26.187In 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
11.948In 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 QFN20
Datasheet
15.593In Stock
45.000Expected 1/22/2027
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
23.000In Stock
27.000Expected 1/22/2027
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-24
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN28
Datasheet
23.747In Stock
27.000Expected 1/22/2027
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 QFN24
Datasheet
680In Stock
1.911Expected 7/3/2026
Min.: 1
Mult.: 1

I/O Controller Interface IC SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24
Datasheet
4.002In Stock
7.500Expected 8/3/2026
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 Quad UART Bridge QFN64
Datasheet
1.016In Stock
2.600Expected 7/27/2026
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
949In 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 USB to UART Bridge QFN28
Datasheet
1.375In Stock
37.500Expected 8/28/2026
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
2.296In Stock
22.995On Order
Min.: 1
Mult.: 1

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
693In Stock
3.000Expected 6/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1.500

I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs USB Interface IC HID USB to SMBUS Bridge QFN24
Datasheet
54In Stock
7.500Expected 6/9/2026
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 I/O Controller Interface IC USB to UART Bridge QFN28
Datasheet
78In Stock
3.066Expected 7/3/2026
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 18 Weeks
Min.: 1.533
Mult.: 1.533

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