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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 (CLP) 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: $1.891 3.210In Stock	Mfr. Part # PCA9554CPWJ Mouser Part # 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	3.210In Stock	Cut Tape $1.891 $1.390 $1.253 $1.110 View Reel $911 $1.044 $1.004 $1.001 $911 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: $2.062 4.828In Stock	Mfr. Part # PCA6416AEVJ Mouser Part # 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	4.828In Stock	Cut Tape $2.062 $1.527 $1.379 $1.230 View Reel $1.022 $1.162 $1.111 $1.105 $1.046 $1.022 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: $2.062 21.404In Stock 18.000Expected 4/26/2027	Mfr. Part # PCA9538ABSHP Mouser Part # 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	21.404In Stock 18.000Expected 4/26/2027	Cut Tape $2.062 $1.515 $1.379 $1.208 View Reel $1.028 $1.173 $1.122 $1.119 $1.081 $1.028 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: $1.811 20.929In Stock 25.000Expected 1/17/2028	Mfr. Part # PCA9554BPWJ Mouser Part # 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	20.929In Stock 25.000Expected 1/17/2028	Cut Tape $1.811 $1.356 $1.299 $1.162 Reel $938 View $1.083 $1.041 $1.001 $917 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: $2.210 50.438In Stock	Mfr. Part # PCA9555AHF,128 Mouser Part # 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	50.438In Stock	Cut Tape $2.210 $1.732 $1.538 $1.390 View Reel $1.185 $1.310 $1.276 $1.253 $1.242 $1.185 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: $1.709 53.432In Stock	Mfr. Part # PCAL6408ABSHP Mouser Part # 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	53.432In Stock	Cut Tape $1.709 $1.242 $1.126 $990 View Reel $834 $957 $919 $910 $878 $834 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: $1.504 39.296In Stock 56.000Expected 12/28/2026	Mfr. Part # PCAL6408AHKX Mouser Part # 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	39.296In Stock 56.000Expected 12/28/2026	Cut Tape $1.504 $1.089 $987 $874 View Reel $723 $819 $787 $763 $752 $723 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: $1.652 38.822In Stock	Mfr. Part # PCAL6408APWJ Mouser Part # 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	38.822In Stock	Cut Tape $1.652 $1.208 $1.151 $1.019 Reel $861 View $957 $919 $910 $842 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: $1.834 89.333In Stock	Mfr. Part # PCAL6416AHF,128 Mouser Part # 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	89.333In Stock	Cut Tape $1.834 $1.344 $1.219 $1.077 View Reel $880 $1.012 $973 $962 $909 $880 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: $2.666 33.724In Stock	Mfr. Part # PCAL9535AHF,128 Mouser Part # 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	33.724In Stock	Cut Tape $2.666 $2.130 $1.948 $1.743 View Reel $1.458 $1.641 $1.595 $1.561 $1.549 $1.458 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 TSSOP24 package PCAL9535APW,118 NXP Semiconductors 1: $2.803 12.159In Stock 7.500Expected 10/21/2026	Mfr. Part # PCAL9535APW,118 Mouser Part # 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	12.159In Stock 7.500Expected 10/21/2026	Cut Tape $2.803 $2.073 $1.994 $1.789 Reel $1.527 View $1.686 $1.629 $1.561 $1.492 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 HWQFN24 package PCAL9539AHF,128 NXP Semiconductors 1: $2.620 12.959In Stock 12.000Expected 10/19/2026	Mfr. Part # PCAL9539AHF,128 Mouser Part # 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 10/19/2026	Cut Tape $2.620 $1.971 $1.823 $1.766 View Reel $1.504 $1.675 $1.629 $1.504 MouseReel Available	Min.: 1 Mult.: 1 : 6.000
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in HWQFN24 package PCAL9555AHF,128 NXP Semiconductors 1: $2.324 14.972In Stock 18.000Expected 10/26/2026	Mfr. Part # PCAL9555AHF,128 Mouser Part # 771-PCAL9555AHF,128	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt and Agile I/O in HWQFN24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	14.972In Stock 18.000Expected 10/26/2026	Cut Tape $2.324 $1.720 $1.572 $1.401 View Reel $1.173 $1.322 $1.276 $1.173 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: $1.606 2.586In Stock	Mfr. Part # PCA6408APW,118 Mouser Part # 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	2.586In Stock	Cut Tape $1.606 $1.162 $1.054 $932 Reel $819 View $887 $852 $831 $796 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 HWQFN24 package PCA6416AHF,128 NXP Semiconductors 1: $1.914 15.051In Stock	Mfr. Part # PCA6416AHF,128 Mouser Part # 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	15.051In Stock	Cut Tape $1.914 $1.447 $1.322 $1.196 View Reel $1.006 $1.126 $1.088 $1.085 $1.046 $1.006 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 TSSOP24 package PCA6416APW,118 NXP Semiconductors 1: $2.073 5.062In Stock	Mfr. Part # PCA6416APW,118 Mouser Part # 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 $2.073 $1.527 $1.390 $1.242 Reel $1.045 View $1.162 $1.118 $1.114 $1.021 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: $2.370 10.750In Stock	Mfr. Part # PCA9535AHF,128 Mouser Part # 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	10.750In Stock	Cut Tape $2.370 $1.754 $1.595 $1.424 View Reel $1.185 $1.344 $1.299 $1.242 $1.230 $1.185 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: $2.381 2.069In Stock 12.500Expected 11/16/2026	Mfr. Part # PCA9535APW,118 Mouser Part # 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	2.069In Stock 12.500Expected 11/16/2026	Cut Tape $2.381 $1.754 $1.595 $1.424 View Reel $1.242 $1.344 $1.299 $1.242 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: $1.994 6.542In Stock	Mfr. Part # PCA9538APWJ Mouser Part # 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	6.542In Stock	Cut Tape $1.994 $1.481 $1.356 $1.208 Reel $1.049 View $1.173 $1.122 $1.119 $1.026 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: $2.290 5.174In Stock 12.000On Order	Mfr. Part # PCA9539AHF,128 Mouser Part # 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	5.174In Stock 12.000On Order	Cut Tape $2.290 $1.754 $1.561 $1.424 View Reel $1.196 $1.344 $1.299 $1.265 $1.196 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: $1.868 7.214In Stock	Mfr. Part # PCAL6416AEVJ Mouser Part # 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	7.214In Stock	Cut Tape $1.868 $1.379 $1.253 $1.106 View Reel $910 $1.040 $1.000 $992 $958 $910 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: $1.937 7.106In Stock 20.000Expected 10/19/2026	Mfr. Part # PCAL6416APW,118 Mouser Part # 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	7.106In Stock 20.000Expected 10/19/2026	Cut Tape $1.937 $1.424 $1.287 $1.139 Reel $964 View $1.071 $1.030 $1.020 $909 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: $2.860 7.429In Stock	Mfr. Part # PCAL9539APW,118 Mouser Part # 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	7.429In Stock	Cut Tape $2.860 $2.130 $1.948 $1.777 Reel $1.549 View $1.675 $1.641 $1.515 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: $2.301 4.530In Stock	Mfr. Part # PCAL9555APW,118 Mouser Part # 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 $2.301 $1.698 $1.538 $1.367 View Reel $1.151 $1.287 $1.242 $1.151 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: $1.606 213In Stock 18.000On Order	Mfr. Part # PCA6408ABSHP Mouser Part # 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	213In Stock 18.000On Order On Order Ship Dates Mfr. #: PCA6408ABSHP Stock: 213 Can Ship Immediately On Order: 6.000 Pending 12.000 Expected 4/26/2027 Factory Lead-Time: 30 Weeks	Cut Tape $1.606 $1.162 $1.054 $932 View Reel $768 $873 $810 $786 $778 $768 MouseReel Available	Min.: 1 Mult.: 1 : 6.000

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