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I2C General Purpose I/O Expanders

NXP Semiconductors I²C General Purpose I/O Expanders provide GPIO expansion for most microprocessor families, allowing designers to save the GPIOs on microprocessors for other important functions. Designers can utilize the microprocessor GPIOs for important functions and use the I/O expander for other duties, including system monitoring, ACPI power switches, sensors, push buttons, LEDs, fans, and more. NXP GPIO expanders are ideal for adding fan and LED control to systems. They are also ideal for monitoring system functions and accepting push-button inputs.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in TSSOP16 package PCA9554CPWJ NXP Semiconductors 1: 1,43 € 3.211In Stock	Mfr. Part No. PCA9554CPWJ Mouser Part No 771-PCA9554CPWJ	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	3.211In Stock	Cut Tape 1,43 € 1,05 € 0,946 € 0,838 € View Reel 0,688 € 0,788 € 0,758 € 0,756 € 0,688 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in VFBGA24 package PCA6416AEVJ NXP Semiconductors 1: 1,56 € 4.796In Stock	Mfr. Part No. PCA6416AEVJ Mouser Part No 771-PCA6416AEVJ	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in VFBGA24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	4.796In Stock	Cut Tape 1,56 € 1,15 € 1,04 € 0,929 € View Reel 0,771 € 0,877 € 0,839 € 0,834 € 0,789 € 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package PCA6416AHF,128 NXP Semiconductors 1: 1,44 € 17.756In Stock	Mfr. Part No. PCA6416AHF,128 Mouser Part No 771-PCA6416AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	17.756In Stock	Cut Tape 1,44 € 1,09 € 0,998 € 0,903 € View Reel 0,759 € 0,85 € 0,821 € 0,819 € 0,789 € 0,759 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in HVQFN16 package PCA9538ABSHP NXP Semiconductors 1: 1,56 € 21.504In Stock 18.000Expected 22/03/2027	Mfr. Part No. PCA9538ABSHP Mouser Part No 771-PCA9538ABSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	21.504In Stock 18.000Expected 22/03/2027	Cut Tape 1,56 € 1,14 € 1,04 € 0,912 € View Reel 0,776 € 0,886 € 0,847 € 0,845 € 0,816 € 0,776 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package PCA9554BPWJ NXP Semiconductors 1: 1,37 € 21.029In Stock 25.000On Order	Mfr. Part No. PCA9554BPWJ Mouser Part No 771-PCA9554BPWJ	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	21.029In Stock 25.000On Order	Cut Tape 1,37 € 1,02 € 0,98 € 0,877 € Reel 0,708 € View 0,818 € 0,786 € 0,756 € 0,692 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in HWQFN24 package PCA9555AHF,128 NXP Semiconductors 1: 1,67 € 52.323In Stock	Mfr. Part No. PCA9555AHF,128 Mouser Part No 771-PCA9555AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	52.323In Stock	Cut Tape 1,67 € 1,31 € 1,16 € 1,05 € View Reel 0,894 € 0,989 € 0,963 € 0,946 € 0,937 € 0,894 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HVQFN16 package PCAL6408ABSHP NXP Semiconductors 1: 1,29 € 56.464In Stock	Mfr. Part No. PCAL6408ABSHP Mouser Part No 771-PCAL6408ABSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	56.464In Stock	Cut Tape 1,29 € 0,937 € 0,85 € 0,747 € View Reel 0,63 € 0,722 € 0,694 € 0,687 € 0,663 € 0,63 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in XQFN16 package PCAL6408AHKX NXP Semiconductors 1: 1,14 € 39.823In Stock 56.000Expected 22/02/2027	Mfr. Part No. PCAL6408AHKX Mouser Part No 771-PCAL6408AHKX	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in XQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	39.823In Stock 56.000Expected 22/02/2027	Cut Tape 1,14 € 0,822 € 0,745 € 0,66 € View Reel 0,546 € 0,618 € 0,594 € 0,576 € 0,568 € 0,546 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP16 package PCAL6408APWJ NXP Semiconductors 1: 1,25 € 48.299In Stock	Mfr. Part No. PCAL6408APWJ Mouser Part No 771-PCAL6408APWJ	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	48.299In Stock	Cut Tape 1,25 € 0,912 € 0,869 € 0,769 € Reel 0,65 € View 0,722 € 0,694 € 0,687 € 0,636 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package PCAL6416AHF,128 NXP Semiconductors 1: 1,38 € 94.517In Stock	Mfr. Part No. PCAL6416AHF,128 Mouser Part No 771-PCAL6416AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	94.517In Stock	Cut Tape 1,38 € 1,01 € 0,92 € 0,813 € View Reel 0,664 € 0,764 € 0,734 € 0,726 € 0,686 € 0,664 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in HWQFN24 package PCAL9535AHF,128 NXP Semiconductors 1: 2,01 € 33.779In Stock	Mfr. Part No. PCAL9535AHF,128 Mouser Part No 771-PCAL9535AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	33.779In Stock	Cut Tape 2,01 € 1,61 € 1,47 € 1,32 € View Reel 1,10 € 1,24 € 1,20 € 1,18 € 1,17 € 1,10 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package PCAL9539AHF,128 NXP Semiconductors 1: 1,98 € 12.959In Stock 12.000Expected 19/10/2026	Mfr. Part No. PCAL9539AHF,128 Mouser Part No 771-PCAL9539AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	12.959In Stock 12.000Expected 19/10/2026	Cut Tape 1,98 € 1,49 € 1,38 € 1,33 € View Reel 1,14 € 1,26 € 1,23 € 1,14 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package PCA6408APW,118 NXP Semiconductors 1: 1,21 € 2.600In Stock	Mfr. Part No. PCA6408APW,118 Mouser Part No 771-PCA6408APW,118	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	2.600In Stock	Cut Tape 1,21 € 0,877 € 0,796 € 0,703 € Reel 0,618 € View 0,67 € 0,643 € 0,627 € 0,601 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP24 package PCA6416APW,118 NXP Semiconductors 1: 1,57 € 5.062In Stock	Mfr. Part No. PCA6416APW,118 Mouser Part No 771-PCA6416APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	5.062In Stock	Cut Tape 1,57 € 1,15 € 1,05 € 0,937 € Reel 0,789 € View 0,877 € 0,844 € 0,841 € 0,771 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater PCA9509PGM,125 NXP Semiconductors 1: 0,92 € 1.547In Stock	Mfr. Part No. PCA9509PGM,125 Mouser Part No 771-PCA9509PGM,125	NXP Semiconductors	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater Learn More about NXP Semiconductors nxp pca9509 repeater	Datasheet	1.547In Stock	Cut Tape 0,92 € 0,663 € 0,599 € 0,528 € View Reel 0,434 € 0,495 € 0,474 € 0,462 € 0,451 € 0,434 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in HWQFN24 package PCA9535AHF,128 NXP Semiconductors 1: 1,79 € 10.830In Stock	Mfr. Part No. PCA9535AHF,128 Mouser Part No 771-PCA9535AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	10.830In Stock	Cut Tape 1,79 € 1,32 € 1,20 € 1,08 € View Reel 0,894 € 1,01 € 0,98 € 0,937 € 0,929 € 0,894 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package PCA9535APW,118 NXP Semiconductors 1: 1,80 € 2.074In Stock 12.500Expected 16/11/2026	Mfr. Part No. PCA9535APW,118 Mouser Part No 771-PCA9535APW,118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt, Low Voltage version of PCA9535 in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	2.074In Stock 12.500Expected 16/11/2026	Cut Tape 1,80 € 1,32 € 1,20 € 1,08 € View Reel 0,937 € 1,01 € 0,98 € 0,937 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP16 package PCA9538APWJ NXP Semiconductors 1: 1,51 € 6.676In Stock	Mfr. Part No. PCA9538APWJ Mouser Part No 771-PCA9538APWJ	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	6.676In Stock	Cut Tape 1,51 € 1,12 € 1,02 € 0,912 € Reel 0,792 € View 0,886 € 0,847 € 0,845 € 0,775 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in HWQFN24 package PCA9539AHF,128 NXP Semiconductors 1: 1,73 € 7.176In Stock 12.000Expected 12/10/2026	Mfr. Part No. PCA9539AHF,128 Mouser Part No 771-PCA9539AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	7.176In Stock 12.000Expected 12/10/2026	Cut Tape 1,73 € 1,32 € 1,18 € 1,08 € View Reel 0,903 € 1,01 € 0,98 € 0,955 € 0,903 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package PCAL6416AEVJ NXP Semiconductors 1: 1,41 € 7.251In Stock	Mfr. Part No. PCAL6416AEVJ Mouser Part No 771-PCAL6416AEVJ	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in VFBGA24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	7.251In Stock	Cut Tape 1,41 € 1,04 € 0,946 € 0,835 € View Reel 0,687 € 0,785 € 0,755 € 0,749 € 0,723 € 0,687 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package PCAL9539APW,118 NXP Semiconductors 1: 2,16 € 7.550In Stock	Mfr. Part No. PCAL9539APW,118 Mouser Part No 771-PCAL9539APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	7.550In Stock	Cut Tape 2,16 € 1,61 € 1,47 € 1,34 € Reel 1,17 € View 1,26 € 1,24 € 1,14 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in TSSOP24 package PCAL9555APW,118 NXP Semiconductors 1: 1,74 € 4.530In Stock	Mfr. Part No. PCAL9555APW,118 Mouser Part No 771-PCAL9555APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	4.530In Stock	Cut Tape 1,74 € 1,28 € 1,16 € 1,03 € View Reel 0,869 € 0,972 € 0,937 € 0,869 € MouseReel Available	Min.: 1 Mult.: 1 : 2.500
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package PCA6408ABSHP NXP Semiconductors 1: 1,21 € 516In Stock 18.000On Order	Mfr. Part No. PCA6408ABSHP Mouser Part No 771-PCA6408ABSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	516In Stock 18.000On Order On Order Ship Dates Mfr. No: PCA6408ABSHP Stock: 516 Can Dispatch Immediately On Order: 6.000 Expected 12/10/2026 12.000 Expected 05/04/2027 Factory Lead Time: 30 Weeks	Cut Tape 1,21 € 0,877 € 0,796 € 0,703 € View Reel 0,58 € 0,659 € 0,611 € 0,593 € 0,587 € 0,58 € MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package PCA6408AHKX NXP Semiconductors 1: 1,05 € 247.985On Order	Mfr. Part No. PCA6408AHKX Mouser Part No 771-PCA6408AHKX	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in XQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	247.985On Order On Order Ship Dates Mfr. No: PCA6408AHKX Stock: 0 On Order: 75.985 Expected 31/05/2027 68.000 Expected 07/06/2027 104.000 Expected 15/11/2027 Factory Lead Time: 30 Weeks	Cut Tape 1,05 € 0,759 € 0,686 € 0,607 € View Reel 0,495 € 0,569 € 0,546 € 0,528 € 0,519 € 0,495 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package PCAL6408AEX1Z NXP Semiconductors 1: 1,31 € 251In Stock 15.000On Order	Mfr. Part No. PCAL6408AEX1Z Mouser Part No 771-PCAL6408AEX1Z	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in X2QFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	251In Stock 15.000On Order On Order Ship Dates Mfr. No: PCAL6408AEX1Z Stock: 251 Can Dispatch Immediately On Order: 10.000 Expected 12/10/2026 5.000 Expected 19/10/2026 Factory Lead Time: 30 Weeks	Cut Tape 1,31 € 1,01 € 0,869 € 0,771 € View Reel 0,645 € 0,724 € 0,687 € 0,645 € MouseReel Available	Min.: 1 Mult.: 1 : 5.000

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