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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 (CHF) 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: 1.34 CHF 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 1.34 CHF 0.983 CHF 0.885 CHF 0.784 CHF View Reel 0.644 CHF 0.738 CHF 0.709 CHF 0.708 CHF 0.644 CHF 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: 1.46 CHF 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 1.46 CHF 1.08 CHF 0.973 CHF 0.87 CHF View Reel 0.722 CHF 0.821 CHF 0.785 CHF 0.781 CHF 0.739 CHF 0.722 CHF 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: 1.35 CHF 17 630In 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 630In Stock	Cut Tape 1.35 CHF 1.02 CHF 0.934 CHF 0.845 CHF View Reel 0.71 CHF 0.796 CHF 0.768 CHF 0.767 CHF 0.739 CHF 0.71 CHF 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: 1.46 CHF 21 504In Stock 18 000Expected 19/04/2027	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 19/04/2027	Cut Tape 1.46 CHF 1.07 CHF 0.973 CHF 0.854 CHF View Reel 0.726 CHF 0.829 CHF 0.793 CHF 0.791 CHF 0.764 CHF 0.726 CHF 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: 1.28 CHF 21 029In Stock 25 000Expected 18/01/2027	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 000Expected 18/01/2027	Cut Tape 1.28 CHF 0.955 CHF 0.917 CHF 0.821 CHF Reel 0.663 CHF View 0.766 CHF 0.736 CHF 0.708 CHF 0.648 CHF 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: 1.56 CHF 50 863In 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	50 863In Stock	Cut Tape 1.56 CHF 1.23 CHF 1.09 CHF 0.983 CHF View Reel 0.837 CHF 0.926 CHF 0.901 CHF 0.885 CHF 0.877 CHF 0.837 CHF 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: 1.21 CHF 55 714In 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	55 714In Stock	Cut Tape 1.21 CHF 0.877 CHF 0.796 CHF 0.699 CHF View Reel 0.59 CHF 0.676 CHF 0.65 CHF 0.643 CHF 0.621 CHF 0.59 CHF 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: 1.07 CHF 39 758In Stock 56 000Expected 28/12/2026	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 758In Stock 56 000Expected 28/12/2026	Cut Tape 1.07 CHF 0.769 CHF 0.697 CHF 0.618 CHF View Reel 0.511 CHF 0.578 CHF 0.556 CHF 0.539 CHF 0.532 CHF 0.511 CHF 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: 1.17 CHF 46 844In 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	46 844In Stock	Cut Tape 1.17 CHF 0.854 CHF 0.813 CHF 0.72 CHF Reel 0.608 CHF View 0.676 CHF 0.65 CHF 0.643 CHF 0.595 CHF 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: 1.29 CHF 93 528In 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	93 528In Stock	Cut Tape 1.29 CHF 0.945 CHF 0.861 CHF 0.761 CHF View Reel 0.622 CHF 0.715 CHF 0.687 CHF 0.68 CHF 0.642 CHF 0.622 CHF 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: 1.88 CHF 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 1.88 CHF 1.51 CHF 1.38 CHF 1.24 CHF View Reel 1.03 CHF 1.16 CHF 1.12 CHF 1.10 CHF 1.03 CHF 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: 1.85 CHF 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 1.85 CHF 1.39 CHF 1.29 CHF 1.24 CHF View Reel 1.07 CHF 1.18 CHF 1.15 CHF 1.07 CHF 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: 1.13 CHF 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 1.13 CHF 0.821 CHF 0.745 CHF 0.658 CHF Reel 0.578 CHF View 0.627 CHF 0.602 CHF 0.587 CHF 0.563 CHF 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: 1.47 CHF 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 1.47 CHF 1.08 CHF 0.983 CHF 0.877 CHF Reel 0.739 CHF View 0.821 CHF 0.79 CHF 0.787 CHF 0.722 CHF MouseReel Available	Min.: 1 Mult.: 1 : 2 500
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: 1.68 CHF 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 1.68 CHF 1.24 CHF 1.12 CHF 1.01 CHF View Reel 0.837 CHF 0.945 CHF 0.917 CHF 0.877 CHF 0.87 CHF 0.837 CHF 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: 1.68 CHF 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 1.68 CHF 1.24 CHF 1.12 CHF 1.01 CHF View Reel 0.877 CHF 0.945 CHF 0.917 CHF 0.877 CHF 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: 1.41 CHF 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 1.41 CHF 1.05 CHF 0.955 CHF 0.854 CHF Reel 0.741 CHF View 0.829 CHF 0.793 CHF 0.791 CHF 0.725 CHF 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: 1.62 CHF 5 819In 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	5 819In Stock 12 000Expected 12/10/2026	Cut Tape 1.62 CHF 1.24 CHF 1.10 CHF 1.01 CHF View Reel 0.845 CHF 0.945 CHF 0.917 CHF 0.894 CHF 0.845 CHF 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: 1.32 CHF 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 1.32 CHF 0.973 CHF 0.885 CHF 0.782 CHF View Reel 0.643 CHF 0.735 CHF 0.707 CHF 0.701 CHF 0.677 CHF 0.643 CHF 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 TSSOP24 package PCAL6416APW,118 NXP Semiconductors 1: 1.35 CHF 7 356In Stock 20 000Expected 19/10/2026	Mfr. Part No. PCAL6416APW,118 Mouser Part No 771-PCAL6416APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	7 356In Stock 20 000Expected 19/10/2026	Cut Tape 1.35 CHF 0.983 CHF 0.894 CHF 0.786 CHF View Reel 0.642 CHF 0.739 CHF 0.71 CHF 0.702 CHF 0.642 CHF MouseReel Available	Min.: 1 Mult.: 1 : 2 500
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in TSSOP24 package PCAL9535APW,118 NXP Semiconductors 1: 1.98 CHF 12 692In Stock 7 500On Order	Mfr. Part No. PCAL9535APW,118 Mouser Part No 771-PCAL9535APW,118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	12 692In Stock 7 500On Order On Order Ship Dates Mfr. No: PCAL9535APW,118 Stock: 12 692 Can Dispatch Immediately On Order: 2 500 Expected 14/10/2026 5 000 Expected 21/10/2026 Factory Lead Time: 30 Weeks	Cut Tape 1.98 CHF 1.47 CHF 1.41 CHF 1.26 CHF Reel 1.08 CHF View 1.19 CHF 1.15 CHF 1.10 CHF 1.06 CHF MouseReel Available	Min.: 1 Mult.: 1 : 2 500
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: 2.02 CHF 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 2.02 CHF 1.51 CHF 1.38 CHF 1.25 CHF Reel 1.10 CHF View 1.18 CHF 1.16 CHF 1.07 CHF 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: 1.63 CHF 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 1.63 CHF 1.20 CHF 1.09 CHF 0.964 CHF View Reel 0.813 CHF 0.91 CHF 0.877 CHF 0.813 CHF 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: 1.13 CHF 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 19/04/2027 Factory Lead Time: 30 Weeks	Cut Tape 1.13 CHF 0.821 CHF 0.745 CHF 0.658 CHF View Reel 0.543 CHF 0.617 CHF 0.572 CHF 0.555 CHF 0.549 CHF 0.543 CHF MouseReel Available	Min.: 1 Mult.: 1 : 6 000
Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater PCA9509PGM,125 NXP Semiconductors 1: 0.861 CHF 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 0.861 CHF 0.621 CHF 0.561 CHF 0.494 CHF View Reel 0.406 CHF 0.463 CHF 0.444 CHF 0.432 CHF 0.422 CHF 0.406 CHF MouseReel Available	Min.: 1 Mult.: 1 : 4 000

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