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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: $1.768 3.211In 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	3.211In Stock	Cut Tape $1.768 $1.340 $1.175 $1.033 Reel $874 View $971 $933 $918 $864 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: $1.910 4.796In 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	4.796In Stock	Cut Tape $1.910 $1.471 $1.274 $1.131 View Reel $951 $1.063 $1.023 $1.017 $973 $951 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: $1.845 17.841In 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	17.841In Stock	Cut Tape $1.845 $1.394 $1.274 $1.153 View Reel $969 $1.085 $1.049 $1.045 $1.008 $969 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: $1.987 21.504In Stock 18.000Expected 3/22/2027	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	21.504In Stock 18.000Expected 3/22/2027	Cut Tape $1.987 $1.460 $1.329 $1.164 View Reel $990 $1.131 $1.081 $1.078 $1.042 $990 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: $1.746 21.500In Stock	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	21.500In Stock	Cut Tape $1.746 $1.307 $1.252 $1.120 Reel $904 View $1.044 $1.004 $965 $884 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: $2.130 51.196In 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	51.196In Stock	Cut Tape $2.130 $1.669 $1.482 $1.340 View Reel $1.142 $1.263 $1.230 $1.208 $1.197 $1.142 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: $1.647 56.453In 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	56.453In Stock	Cut Tape $1.647 $1.197 $1.085 $954 View Reel $804 $922 $886 $877 $847 $804 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: $1.449 39.849In Stock 56.000Expected 2/22/2027	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	39.849In Stock 56.000Expected 2/22/2027	Cut Tape $1.449 $1.050 $951 $842 View Reel $697 $789 $759 $736 $725 $697 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: $1.592 48.470In 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	48.470In Stock	Cut Tape $1.592 $1.164 $1.109 $982 Reel $830 View $922 $886 $877 $811 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: $1.768 93.425In 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	93.425In Stock	Cut Tape $1.768 $1.296 $1.175 $1.038 View Reel $848 $975 $938 $927 $896 $848 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: $2.569 34.279In 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	34.279In Stock	Cut Tape $2.569 $2.053 $1.878 $1.680 View Reel $1.405 $1.581 $1.537 $1.504 $1.493 $1.405 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: $2.525 13.017In 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	13.017In Stock 12.000Expected 10/19/2026	Cut Tape $2.525 $1.899 $1.757 $1.702 View Reel $1.449 $1.614 $1.570 $1.449 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: $2.240 26.621In Stock 18.000Expected 10/19/2026	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	26.621In Stock 18.000Expected 10/19/2026	Cut Tape $2.240 $1.658 $1.515 $1.350 View Reel $1.131 $1.274 $1.230 $1.131 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: $1.581 2.600In 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	2.600In Stock	Cut Tape $1.581 $1.164 $1.036 $918 Reel $772 View $861 $829 $795 $753 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: $1.998 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 $1.998 $1.471 $1.340 $1.197 Reel $1.007 View $1.120 $1.077 $1.074 $984 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: $1.175 5.547In Stock	Mfr. Part # PCA9509PGM,125 Mouser Part # 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	5.547In Stock	Cut Tape $1.175 $847 $764 $674 View Reel $554 $631 $605 $590 $575 $554 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: $2.284 10.990In 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	10.990In Stock	Cut Tape $2.284 $1.691 $1.537 $1.372 View Reel $1.142 $1.296 $1.252 $1.219 $1.142 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: $2.295 2.098In 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	2.098In Stock 12.500Expected 11/16/2026	Cut Tape $2.295 $1.691 $1.537 $1.372 View Reel $1.197 $1.296 $1.252 $1.197 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: $2.009 7.176In 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	7.176In Stock	Cut Tape $2.009 $1.482 $1.350 $1.197 Reel $1.011 View $1.131 $1.085 $1.078 $971 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: $2.207 7.276In Stock 12.000Expected 10/12/2026	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	7.276In Stock 12.000Expected 10/12/2026	Cut Tape $2.207 $1.691 $1.504 $1.372 View Reel $1.153 $1.296 $1.252 $1.219 $1.153 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: $1.801 7.301In 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	7.301In Stock	Cut Tape $1.801 $1.329 $1.208 $1.066 View Reel $877 $1.002 $964 $956 $923 $877 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: $2.756 7.800In 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	7.800In Stock	Cut Tape $2.756 $2.053 $1.878 $1.713 Reel $1.493 View $1.614 $1.581 $1.460 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: $2.218 4.755In 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	4.755In Stock	Cut Tape $2.218 $1.636 $1.482 $1.318 View Reel $1.109 $1.241 $1.197 $1.109 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: $1.548 476In 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	476In Stock 18.000On Order On Order Ship Dates Mfr. #: PCA6408ABSHP Stock: 476 Can Ship Immediately On Order: 6.000 Expected 10/12/2026 12.000 Expected 4/5/2027 Factory Lead-Time: 30 Weeks	Cut Tape $1.548 $1.120 $1.016 $898 View Reel $740 $841 $781 $758 $750 $740 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: $1.340 27In Stock 248.000On Order	Mfr. Part # PCA6408AHKX Mouser Part # 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	27In Stock 248.000On Order On Order Ship Dates Mfr. #: PCA6408AHKX Stock: 27 Can Ship Immediately On Order: 104.000 Expected 1/8/2027 76.000 Expected 5/31/2027 68.000 Expected 6/7/2027 Factory Lead-Time: 16 Weeks	Cut Tape $1.340 $968 $876 $775 View Reel $631 $727 $697 $674 $663 $631 MouseReel Available	Min.: 1 Mult.: 1 : 4.000

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