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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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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS
	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: ¥335.5 4,480In 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	4,480In Stock	Cut Tape ¥335.5 ¥247.5 ¥224.2 ¥199.3 View Reel ¥167.8 ¥187.7 ¥181 ¥167.8 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: ¥199.3 1,497In Stock 8,000Expected 1/14/2027	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	1,497In Stock 8,000Expected 1/14/2027	Cut Tape ¥199.3 ¥143 ¥128.7 ¥113.3 View Reel ¥91.4 ¥105.8 ¥101.3 ¥98.2 ¥93.8 ¥91.4 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 TSSOP24 package PCA9535APW,118 NXP Semiconductors 1: ¥347.1 47In Stock 12,500On Order	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	47In Stock 12,500On Order	Cut Tape ¥347.1 ¥255.8 ¥232.5 ¥207.6 View Reel ¥181 ¥196 ¥194.3 ¥189.4 ¥181 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 XQFN16 package PCA6408AHKX NXP Semiconductors 1: ¥202.6 244,985On 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	244,985On Order On Order Ship Dates Mfr. #: PCA6408AHKX Stock: 0 On Order: 72,985 Expected 5/31/2027 68,000 Expected 9/6/2027 104,000 Expected 11/22/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥202.6 ¥146.5 ¥132.5 ¥117.3 View Reel ¥95.5 ¥110 ¥105.5 ¥102 ¥100.3 ¥95.5 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP24 package PCA9539APW,118 NXP Semiconductors 1: ¥317.3 16,179On Order	Mfr. Part # PCA9539APW,118 Mouser Part # 771-PCA9539APW,118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	16,179On Order On Order Ship Dates Mfr. #: PCA9539APW,118 Stock: 0 On Order: 1,179 Expected 11/17/2026 15,000 Expected 1/14/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥317.3 ¥234.2 ¥212.6 ¥189.4 View Reel ¥163.6 ¥181 ¥176.1 ¥163.6 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	Interface - Signal Buffers, Repeaters Dual Supply Low power level translating I2C-bus/SMBus repeater PCA9509PDP,118 NXP Semiconductors 1: ¥322.2 2,274Expected 11/9/2026	Mfr. Part # PCA9509PDP,118 Mouser Part # 771-PCA9509PDP,118	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	2,274Expected 11/9/2026	Cut Tape ¥322.2 Reel ¥179.4 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in TSSOP24 package PCA9555APW,118 NXP Semiconductors 1: ¥335.5 9,995On Order	Mfr. Part # PCA9555APW,118 Mouser Part # 771-PCA9555APW118	NXP Semiconductors	Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in TSSOP24 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	9,995On Order On Order Ship Dates Mfr. #: PCA9555APW,118 Stock: 0 On Order: 4,995 Expected 1/25/2027 5,000 Expected 2/22/2027 Factory Lead-Time: 30 Weeks	Cut Tape ¥335.5 ¥247.5 ¥224.2 ¥199.3 View Reel ¥167.8 ¥187.7 ¥181 ¥167.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
	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: ¥252.5 14,967Expected 11/22/2027	Mfr. Part # PCAL6408AEX1Z Mouser Part # 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	14,967Expected 11/22/2027	Cut Tape ¥252.5 ¥194.3 ¥167.8 ¥148.8 View Reel ¥124.6 ¥139.9 ¥132.7 ¥124.6 MouseReel Available	Min.: 1 Mult.: 1 : 5,000