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
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 I/O Controller Interface IC HID USB to UART Bridge QFN24 26,040In Stock
$4.97
$3.79
$3.49
$3.17
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 3,289In Stock
Cut Tape
$5.12
$3.90
$3.59
$3.26
Reel
$2.92
Min.: 1
Mult.: 1
: 2,500
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 53,139In Stock
Cut Tape
$9.52
$7.37
$6.82
$6.31
Reel
$5.49
Min.: 1
Mult.: 1
: 2,500
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 QFN20 37,651In Stock
63,000Expected 08/01/2027
Cut Tape
$4.54
$3.42
$3.14
$2.84
Reel
$2.45
Min.: 1
Mult.: 1
: 2,500
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 QFN28 3,170In Stock
3,000Expected 25/12/2026
Cut Tape
$11.96
$11.57
$8.72
$8.01
Reel
$7.34
Min.: 1
Mult.: 1
: 2,500
I/O Controller Interface IC SMD/SMT MLP-28
Silicon Labs I/O Controller Interface IC USB to UART Bridge QFN24 19,911In Stock
Cut Tape
$5.12
$3.93
$3.62
$3.29
Reel
$2.79
Min.: 1
Mult.: 1
: 2,500
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 5,220In Stock
9,555Expected 04/06/2027
$4.99
$3.80
$3.50
$3.17
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 11,657In Stock
32,500Expected 08/04/2027
Cut Tape
$13.08
$10.24
$9.53
$8.75
Reel
$7.55
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 5,594In Stock
9,555Expected 04/06/2027
$4.99
$3.80
$3.50
$3.17
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 4,350In Stock
7,500Expected 04/06/2027
Cut Tape
$4.99
$3.80
$3.50
$3.17
Reel
$2.85
Min.: 1
Mult.: 1
: 2,500
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 4,106In Stock
32,760On Order
$3.96
$3.54
$2.82
$2.69
Min.: 1
Mult.: 1
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 2,005In Stock
3,822Expected 04/06/2027
$5.25
$4.00
$3.69
$3.34
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 4,013In Stock
Cut Tape
$4.97
$3.79
$3.49
$3.17
$3.11
Reel
$2.63
Min.: 1
Mult.: 1
: 2,500
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 642In Stock
$5.12
$3.90
$3.59
$3.26
Min.: 1
Mult.: 1
I/O Controller Interface IC SMD/SMT QFN-28
Silicon Labs USB Interface IC USBXpress - USB to UART Bridge QFN24 57In Stock
22,932On Order
$5.46
$4.14
$3.47
$3.00
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 57In Stock
66,000On Order
Cut Tape
$5.46
$4.14
$3.81
$2.78
Reel
$2.46
Min.: 1
Mult.: 1
: 2,500
USB Interface IC USB Controllers Bridge, USB to UART UART SMD/SMT QFN-24
Silicon Labs I/O Controller Interface IC USB to Dual UART Bridge QFN24 50In Stock
48,500On Order
Cut Tape
$4.99
$3.80
$3.50
$3.17
Reel
$2.85
Min.: 1
Mult.: 1
: 2,500
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 18In Stock
7,800On Order
$13.08
$10.24
$9.53
$8.75
Min.: 1
Mult.: 1
I/O Controller Interface IC I/O Controllers USB to Quad UART Bridge Serial SMD/SMT QFN-64
Silicon Labs USB Interface IC USB to UART Bridge QFN28
3,016Expected 25/12/2026
$9.77
$7.60
$7.06
$6.46
Min.: 1
Mult.: 1
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
22,902Expected 01/01/2027
$5.36
$4.07
$3.47
$3.32
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
83,000On Order
Cut Tape
$3.52
$3.30
$3.04
$2.89
Reel
$2.13
Min.: 1
Mult.: 1
: 2,500
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
10,124Expected 21/10/2026
$12.66
$9.86
$8.88
$8.34
Min.: 1
Mult.: 1
I/O Controller Interface IC SMD/SMT MLP-28