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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.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
I/O Controller Interface IC HID USB to UART Bridge QFN24 CP2110-F01-GM Silicon Labs 1: $4.97 26,040In Stock	Mfr. Part # CP2110-F01-GM Mouser Part # 634-CP2110-F01-GM	Silicon Labs	I/O Controller Interface IC HID USB to UART Bridge QFN24 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	26,040In Stock	$4.97 $3.79 $3.49 $3.17 View $3.01 $2.92 $2.88 $2.84	Min.: 1 Mult.: 1
I/O Controller Interface IC HID USB to UART bridge CP2110-F02-GM1R Silicon Labs 1: $5.12 3,289In Stock	Mfr. Part # CP2110-F02-GM1R Mouser Part # 634-CP2110-F02-GM1R	Silicon Labs	I/O Controller Interface IC HID USB to UART bridge Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	3,289In Stock	Cut Tape $5.12 $3.90 $3.59 $3.26 View Reel $2.92 $3.10 $3.00 $2.96 $2.92	Min.: 1 Mult.: 1 : 2,500
USB Interface IC USB to UART Bridge QFN28 CP2102-GMR Silicon Labs 1: $9.52 53,127In Stock	Mfr. Part # CP2102-GMR Mouser Part # 634-CP2102-GMR	Silicon Labs	USB Interface IC USB to UART Bridge QFN28 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	53,127In Stock	Cut Tape $9.52 $7.37 $6.82 $6.31 View Reel $5.49 $6.09 $6.02 $5.60 $5.49 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500
USB Interface IC USBXpress - USB to UART Bridge QFN20 CP2102N-A02-GQFN20R Silicon Labs 1: $4.54 37,651In Stock 63,000Expected 1/8/2027	Mfr. Part # CP2102N-A02-GQFN20R Mouser Part # 634-CP2102NA02QFN20R	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN20 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	37,651In Stock 63,000Expected 1/8/2027	Cut Tape $4.54 $3.42 $3.14 $2.84 View Reel $2.45 $2.69 $2.67 $2.51 $2.45 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to UART Bridge QFN28 CP2103-GMR Silicon Labs 1: $11.96 3,170In Stock 3,000Expected 12/25/2026	Mfr. Part # CP2103-GMR Mouser Part # 634-CP2103-GMR	Silicon Labs	I/O Controller Interface IC USB to UART Bridge QFN28 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	3,170In Stock 3,000Expected 12/25/2026	Cut Tape $11.96 $11.57 $8.72 $8.01 View Reel $7.34 $7.93 $7.67 $7.50 $7.34 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to UART Bridge QFN24 CP2104-F03-GMR Silicon Labs 1: $5.12 19,909In Stock	Mfr. Part # CP2104-F03-GMR Mouser Part # 634-CP2104-F03-GMR	Silicon Labs	I/O Controller Interface IC USB to UART Bridge QFN24 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	19,909In Stock	Cut Tape $5.12 $3.93 $3.62 $3.29 Reel $2.79 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to Dual UART Bridge QFN24 CP2105-F01-GM Silicon Labs 1: $4.99 5,220In Stock 9,555Expected 6/4/2027	Mfr. Part # CP2105-F01-GM Mouser Part # 634-CP2105-F01-GM	Silicon Labs	I/O Controller Interface IC USB to Dual UART Bridge QFN24 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	5,220In Stock 9,555Expected 6/4/2027	$4.99 $3.80 $3.50 $3.17 View $3.01 $2.92 $2.88 $2.85	Min.: 1 Mult.: 1
I/O Controller Interface IC USB to Quad UART Bridge QFN64 CP2108-B03-GMR Silicon Labs 1: $13.08 11,297In Stock 32,500Expected 8/6/2027	Mfr. Part # CP2108-B03-GMR Mouser Part # 634-CP2108-B03-GMR	Silicon Labs	I/O Controller Interface IC USB to Quad UART Bridge QFN64 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	11,297In Stock 32,500Expected 8/6/2027	Cut Tape $13.08 $10.24 $9.53 $8.75 View Reel $7.55 $8.67 $8.16 $7.98 $7.55 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
USB Interface IC HID USB to SMBUS Bridge QFN24 CP2112-F03-GM Silicon Labs 1: $4.99 5,594In Stock 9,555Expected 6/4/2027	Mfr. Part # CP2112-F03-GM Mouser Part # 634-CP2112-F03-GM	Silicon Labs	USB Interface IC HID USB to SMBUS Bridge QFN24 Learn More about Silicon Labs cp2112 hid usb to smbus bridges	Datasheet	5,594In Stock 9,555Expected 6/4/2027	$4.99 $3.80 $3.50 $3.17 View $3.01 $2.92 $2.88 $2.85	Min.: 1 Mult.: 1
USB Interface IC USBXpress - USB to UART Bridge QFN20 CP2102N-A02-GQFN20 Silicon Labs 1: $3.96 4,047In Stock 32,760On Order	Mfr. Part # CP2102N-A02-GQFN20 Mouser Part # 634-CP2102NA02GQFN20	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN20 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	4,047In Stock 32,760On Order On Order Ship Dates Mfr. #: CP2102N-A02-GQFN20 Stock: 4,047 Can Ship Immediately On Order: 12,600 Expected 10/13/2026 20,160 Expected 1/8/2027 Factory Lead-Time: 31 Weeks	$3.96 $3.54 $2.82 $2.69 View $2.63 $2.16 $2.08	Min.: 1 Mult.: 1
I/O Controller Interface IC USB to UART Bridge QFN24 CP2104-F03-GM Silicon Labs 1: $5.25 2,005In Stock 3,822Expected 6/4/2027	Mfr. Part # CP2104-F03-GM Mouser Part # 634-CP2104-F03-GM	Silicon Labs	I/O Controller Interface IC USB to UART Bridge QFN24 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	2,005In Stock 3,822Expected 6/4/2027	$5.25 $4.00 $3.69 $3.34 View $3.18 $3.08 $3.04 $3.01	Min.: 1 Mult.: 1
I/O Controller Interface IC HID USB to UART bridge CP2110-F01-GMR Silicon Labs 1: $4.97 4,013In Stock	Mfr. Part # CP2110-F01-GMR Mouser Part # 634-CP2110-F01-GMR	Silicon Labs	I/O Controller Interface IC HID USB to UART bridge Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	4,013In Stock	Cut Tape $4.97 $3.79 $3.49 $3.17 $3.11 Reel $2.63 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC HID USB to UART Bridge QFN28 CP2110-F02-GM1 Silicon Labs 1: $5.12 642In Stock	Mfr. Part # CP2110-F02-GM1 Mouser Part # 634-CP2110-F02-GM1	Silicon Labs	I/O Controller Interface IC HID USB to UART Bridge QFN28 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	642In Stock	$5.12 $3.90 $3.59 $3.26 View $3.10 $3.00 $2.96 $2.92	Min.: 1 Mult.: 1
USB Interface IC HID USB to SMBUS Bridge QFN24 CP2112-F03-GMR Silicon Labs 1: $4.99 4,300In Stock 7,500Expected 6/4/2027	Mfr. Part # CP2112-F03-GMR Mouser Part # 634-CP2112-F03-GMR	Silicon Labs	USB Interface IC HID USB to SMBUS Bridge QFN24 Learn More about Silicon Labs cp2112 hid usb to smbus bridges	Datasheet	4,300In Stock 7,500Expected 6/4/2027	Cut Tape $4.99 $3.80 $3.50 $3.17 View Reel $2.85 $3.01 $2.92 $2.88 $2.85 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
USB Interface IC USBXpress - USB to UART Bridge QFN24 CP2102N-A02-GQFN24 Silicon Labs 1: $5.46 57In Stock 22,932On Order	Mfr. Part # CP2102N-A02-GQFN24 Mouser Part # 634-CP2102NA02GQFN24	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN24 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	57In Stock 22,932On Order On Order Ship Dates Mfr. #: CP2102N-A02-GQFN24 Stock: 57 Can Ship Immediately On Order: 13,377 Expected 1/1/2027 9,555 Expected 1/8/2027 Factory Lead-Time: 31 Weeks	$5.46 $4.14 $3.47 $3.00	Min.: 1 Mult.: 1
USB Interface IC USBXpress - USB to UART Bridge QFN24 CP2102N-A02-GQFN24R Silicon Labs 1: $5.46 57In Stock 66,000On Order	Mfr. Part # CP2102N-A02-GQFN24R Mouser Part # 634-CP2102NA02QFN24R	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN24 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	57In Stock 66,000On Order On Order Ship Dates Mfr. #: CP2102N-A02-GQFN24R Stock: 57 Can Ship Immediately On Order: 27,000 Expected 1/1/2027 39,000 Expected 1/8/2027 Factory Lead-Time: 31 Weeks	Cut Tape $5.46 $4.14 $3.81 $2.78 View Reel $2.46 $2.64 $2.62 $2.46 $2.46 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to Dual UART Bridge QFN24 CP2105-F01-GMR Silicon Labs 1: $4.99 50In Stock 48,500On Order	Mfr. Part # CP2105-F01-GMR Mouser Part # 634-CP2105-F01-GMR	Silicon Labs	I/O Controller Interface IC USB to Dual UART Bridge QFN24 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	50In Stock 48,500On Order On Order Ship Dates Mfr. #: CP2105-F01-GMR Stock: 50 Can Ship Immediately On Order: 27,500 Expected 6/4/2027 21,000 TBD Factory Lead-Time: 26 Weeks	Cut Tape $4.99 $3.80 $3.50 $3.17 View Reel $2.85 $3.01 $2.92 $2.88 $2.85 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to Quad UART Bridge QFN64 CP2108-B03-GM Silicon Labs 1: $13.08 18In Stock 7,800On Order	Mfr. Part # CP2108-B03-GM Mouser Part # 634-CP2108-B03-GM	Silicon Labs	I/O Controller Interface IC USB to Quad UART Bridge QFN64 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	18In Stock 7,800On Order On Order Ship Dates Mfr. #: CP2108-B03-GM Stock: 18 Can Ship Immediately On Order: 3,900 Expected 1/22/2027 3,900 Expected 8/6/2027 Factory Lead-Time: 26 Weeks	$13.08 $10.24 $9.53 $8.75 View $8.67 $8.16 $7.98	Min.: 1 Mult.: 1
USB Interface IC USB to UART Bridge QFN28 CP2102-GM Silicon Labs 1: $9.77 3,016Expected 12/25/2026	Mfr. Part # CP2102-GM Mouser Part # 634-CP2102-GM	Silicon Labs	USB Interface IC USB to UART Bridge QFN28 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	3,016Expected 12/25/2026	$9.77 $7.60 $7.06 $6.46 View $6.13 $6.01 $5.86	Min.: 1 Mult.: 1
USB Interface IC USBXpress - USB to UART Bridge QFN28 CP2102N-A02-GQFN28 Silicon Labs 1: $5.36 22,902Expected 1/1/2027	Mfr. Part # CP2102N-A02-GQFN28 Mouser Part # 634-CP2102NA02GQFN28	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN28 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	22,902Expected 1/1/2027	$5.36 $4.07 $3.47 $3.32 View $3.20 $3.12 $3.04 $2.95	Min.: 1 Mult.: 1
USB Interface IC USBXpress - USB to UART Bridge QFN28 CP2102N-A02-GQFN28R Silicon Labs 1: $3.52 83,000On Order	Mfr. Part # CP2102N-A02-GQFN28R Mouser Part # 634-CP2102NA02QFN28R	Silicon Labs	USB Interface IC USBXpress - USB to UART Bridge QFN28 Learn More about Silicon Labs silabs cp2102n usbxpress usb uart bridge controllers	Datasheet	83,000On Order On Order Ship Dates Mfr. #: CP2102N-A02-GQFN28R Stock: 0 On Order: 21,500 Expected 1/1/2027 61,500 Expected 1/8/2027 Factory Lead-Time: 31 Weeks	Cut Tape $3.52 $3.30 $3.04 $2.89 View Reel $2.13 $2.72 $2.57 $2.13 $2.13 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
I/O Controller Interface IC USB to UART Bridge QFN28 CP2103-GM Silicon Labs 1: $12.66 873In Stock 10,731Expected 10/21/2026	Mfr. Part # CP2103-GM Mouser Part # 634-CP2103-GM	Silicon Labs	I/O Controller Interface IC USB to UART Bridge QFN28 Learn More about Silicon Labs silicon cp21xx usb to uart bridges	Datasheet	873In Stock 10,731Expected 10/21/2026	$12.66 $9.86 $8.88 $8.34 View $8.17 $7.83 $7.66 Quote	Min.: 1 Mult.: 1

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