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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 (PEN) Filter the results in the table by unit price based on your quantity.	Qty.
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: S/ 7.05 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 S/ 7.05 S/ 5.22 S/ 4.71 S/ 4.20 View Reel S/ 3.49 S/ 3.97 S/ 3.80 S/ 3.78 S/ 3.57 S/ 3.49 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 PCA9554B in TSSOP16 package PCA9554CPWJ NXP Semiconductors 1: S/ 6.38 3,101In 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	3,101In Stock	Cut Tape S/ 6.38 S/ 4.75 S/ 4.24 S/ 3.74 Reel S/ 3.10 View S/ 3.51 S/ 3.38 S/ 3.34 S/ 3.08 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in HVQFN16 package PCA9538ABSHP NXP Semiconductors 1: S/ 7.05 19,052In Stock 42,000On Order	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	19,052In Stock 42,000On Order On Order Ship Dates Mfr. #: PCA9538ABSHP Stock: 19,052 Can Ship Immediately On Order: 24,000 Expected 12/21/2026 18,000 Expected 5/17/2027 Factory Lead-Time: 30 Weeks	Cut Tape S/ 7.05 S/ 5.18 S/ 4.71 S/ 4.13 View Reel S/ 3.51 S/ 4.01 S/ 3.83 S/ 3.82 S/ 3.69 S/ 3.51 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in HWQFN24 package PCA9539AHF,128 NXP Semiconductors 1: S/ 7.82 16,608In Stock 18,000Expected 11/6/2026	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	16,608In Stock 18,000Expected 11/6/2026	Cut Tape S/ 7.82 S/ 5.99 S/ 5.33 S/ 4.87 View Reel S/ 4.09 S/ 4.59 S/ 4.44 S/ 4.32 S/ 4.09 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: S/ 6.03 18,558In 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	18,558In Stock 25,000Expected 1/17/2028	Cut Tape S/ 6.03 S/ 4.52 S/ 4.32 S/ 3.81 Reel S/ 3.30 View S/ 3.58 S/ 3.46 S/ 3.42 S/ 3.25 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: S/ 7.55 33,116In Stock 24,000Expected 11/30/2026	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	33,116In Stock 24,000Expected 11/30/2026	Cut Tape S/ 7.55 S/ 5.92 S/ 5.25 S/ 4.75 View Reel S/ 4.05 S/ 4.52 S/ 4.40 S/ 4.28 S/ 4.24 S/ 4.05 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: S/ 5.64 50,939In 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	50,939In Stock	Cut Tape S/ 5.64 S/ 4.16 S/ 3.79 S/ 3.38 View Reel S/ 2.85 S/ 3.27 S/ 3.14 S/ 3.11 S/ 3.00 S/ 2.85 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: S/ 4.79 37,993In Stock 56,000Expected 1/4/2027	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	37,993In Stock 56,000Expected 1/4/2027	Cut Tape S/ 4.79 S/ 3.72 S/ 3.37 S/ 2.99 View Reel S/ 2.44 S/ 2.80 S/ 2.69 S/ 2.61 S/ 2.57 S/ 2.44 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: S/ 5.53 36,214In 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	36,214In Stock	Cut Tape S/ 5.53 S/ 4.13 S/ 3.93 S/ 3.48 Reel S/ 2.94 View S/ 3.27 S/ 3.14 S/ 3.11 S/ 2.85 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: S/ 6.27 77,336In 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	77,336In Stock	Cut Tape S/ 6.27 S/ 4.59 S/ 4.16 S/ 3.68 View Reel S/ 3.01 S/ 3.46 S/ 3.32 S/ 3.29 S/ 3.11 S/ 3.01 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: S/ 6.46 24,196In Stock	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	24,196In Stock	Cut Tape S/ 6.46 S/ 4.94 S/ 4.28 S/ 3.80 Reel S/ 3.17 View S/ 3.57 S/ 3.43 S/ 3.39 S/ 3.16 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 HWQFN24 package PCAL9535AHF,128 NXP Semiconductors 1: S/ 9.11 14,923In Stock 18,000Expected 8/30/2027	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	14,923In Stock 18,000Expected 8/30/2027	Cut Tape S/ 9.11 S/ 7.28 S/ 6.66 S/ 5.96 View Reel S/ 4.98 S/ 5.61 S/ 5.45 S/ 5.33 S/ 5.29 S/ 4.98 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: S/ 9.58 14,659In Stock	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	14,659In Stock	Cut Tape S/ 9.58 S/ 7.08 S/ 6.81 S/ 6.11 Reel S/ 5.22 View S/ 5.76 S/ 5.57 S/ 5.33 S/ 5.10 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: S/ 8.95 24,770In Stock	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	24,770In Stock	Cut Tape S/ 8.95 S/ 6.73 S/ 6.23 S/ 6.03 View Reel S/ 5.14 S/ 5.72 S/ 5.57 S/ 5.14 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 HVQFN16 package PCA6408ABSHP NXP Semiconductors 1: S/ 5.41 6,311In Stock 12,000Expected 5/17/2027	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	6,311In Stock 12,000Expected 5/17/2027	Cut Tape S/ 5.41 S/ 3.93 S/ 3.56 S/ 3.15 View Reel S/ 2.60 S/ 2.96 S/ 2.85 S/ 2.76 S/ 2.72 S/ 2.60 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: S/ 5.49 2,566In 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	2,566In Stock	Cut Tape S/ 5.49 S/ 3.97 S/ 3.60 S/ 3.22 Reel S/ 2.83 View S/ 3.06 S/ 2.97 S/ 2.89 S/ 2.79 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: S/ 6.54 3,475In 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	3,475In Stock	Cut Tape S/ 6.54 S/ 4.94 S/ 4.52 S/ 4.09 View Reel S/ 3.44 S/ 3.85 S/ 3.72 S/ 3.71 S/ 3.57 S/ 3.44 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: S/ 7.08 5,042In 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	5,042In Stock	Cut Tape S/ 7.08 S/ 5.22 S/ 4.75 S/ 4.24 Reel S/ 3.57 View S/ 3.97 S/ 3.82 S/ 3.81 S/ 3.49 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: S/ 7.63 10,378In 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	10,378In Stock	Cut Tape S/ 7.63 S/ 5.76 S/ 5.22 S/ 4.75 View Reel S/ 4.01 S/ 4.52 S/ 4.36 S/ 4.28 S/ 4.24 S/ 4.01 MouseReel Available	Min.: 1 Mult.: 1 : 6,000
Interface - I/O Expanders 8-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP16 package PCA9538APWJ NXP Semiconductors 1: S/ 6.81 3,942In Stock 5,000Expected 1/7/2027	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	3,942In Stock 5,000Expected 1/7/2027	Cut Tape S/ 6.81 S/ 5.06 S/ 4.63 S/ 4.13 Reel S/ 3.58 View S/ 4.01 S/ 3.83 S/ 3.82 S/ 3.51 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address than PCA9554C in HVQFN16 package PCA9554BBSHP NXP Semiconductors 1: S/ 6.62 3,970In Stock 60,000On Order	Mfr. Part # PCA9554BBSHP Mouser Part # 771-PCA9554BBSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address than PCA9554C in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	3,970In Stock 60,000On Order On Order Ship Dates Mfr. #: PCA9554BBSHP Stock: 3,970 Can Ship Immediately On Order: 6,000 Expected 12/21/2026 18,000 Expected 5/3/2027 36,000 Expected 5/10/2027 Factory Lead-Time: 30 Weeks	Cut Tape S/ 6.62 S/ 4.83 S/ 4.40 S/ 3.88 View Reel S/ 3.19 S/ 3.60 S/ 3.46 S/ 3.42 S/ 3.19 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 PCA9554B in HVQFN16 package PCA9554CBSHP NXP Semiconductors 1: S/ 6.50 4,267In Stock 6,000Expected 5/17/2027	Mfr. Part # PCA9554CBSHP Mouser Part # 771-PCA9554CBSHP	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554B in HVQFN16 package Learn More about NXP Semiconductors nxp gpioexpanders	Datasheet	4,267In Stock 6,000Expected 5/17/2027	Cut Tape S/ 6.50 S/ 4.75 S/ 4.32 S/ 3.83 View Reel S/ 3.13 S/ 3.60 S/ 3.46 S/ 3.42 S/ 3.20 S/ 3.13 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: S/ 6.15 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 S/ 6.15 S/ 4.55 S/ 4.16 S/ 3.69 View Reel S/ 3.11 S/ 3.50 S/ 3.37 S/ 3.34 S/ 3.24 S/ 3.11 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: S/ 9.11 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 S/ 9.11 S/ 6.93 S/ 6.38 S/ 5.80 View Reel S/ 5.14 S/ 5.53 S/ 5.37 S/ 5.25 S/ 5.14 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 HWQFN24 package PCAL9555AHF,128 NXP Semiconductors 1: S/ 7.94 12,608In Stock 18,000Expected 11/2/2026	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	12,608In Stock 18,000Expected 11/2/2026	Cut Tape S/ 7.94 S/ 5.88 S/ 5.37 S/ 4.79 View Reel S/ 4.01 S/ 4.52 S/ 4.36 S/ 4.01 MouseReel Available	Min.: 1 Mult.: 1 : 6,000

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I2C General Purpose I/O Expanders

Types of Semiconductors