Semiconductors – Mouser United Kingdom

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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 (GBP) 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: £1.24 3,210In 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	3,210In Stock	Cut Tape £1.24 £0.917 £0.826 £0.732 Reel £0.601 View £0.688 £0.662 £0.656 £0.597 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: £1.36 4,828In 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	4,828In Stock	Cut Tape £1.36 £1.00 £0.908 £0.811 View Reel £0.673 £0.766 £0.732 £0.728 £0.689 £0.673 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: £1.36 19,297In Stock 18,000Expected 03/05/2027	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	19,297In Stock 18,000Expected 03/05/2027	Cut Tape £1.36 £0.995 £0.908 £0.796 View Reel £0.677 £0.773 £0.739 £0.738 £0.712 £0.677 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: £1.51 17,014In Stock	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	17,014In Stock	Cut Tape £1.51 £1.15 £1.03 £0.943 View Reel £0.788 £0.882 £0.856 £0.834 £0.788 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: £1.20 20,362In Stock 25,000Expected 17/01/2028	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	20,362In Stock 25,000Expected 17/01/2028	Cut Tape £1.20 £0.89 £0.856 £0.766 Reel £0.618 View £0.714 £0.686 £0.66 £0.604 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: £1.46 48,263In 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	48,263In Stock	Cut Tape £1.46 £1.14 £1.01 £0.917 View Reel £0.78 £0.863 £0.841 £0.826 £0.818 £0.78 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: £1.13 51,659In 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	51,659In Stock	Cut Tape £1.13 £0.818 £0.742 £0.652 View Reel £0.55 £0.63 £0.606 £0.60 £0.579 £0.55 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: £0.995 39,241In Stock 56,000Expected 04/01/2027	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	39,241In Stock 56,000Expected 04/01/2027	Cut Tape £0.995 £0.718 £0.65 £0.576 View Reel £0.477 £0.54 £0.519 £0.503 £0.496 £0.477 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: £1.09 36,297In 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	36,297In Stock	Cut Tape £1.09 £0.796 £0.759 £0.671 Reel £0.567 View £0.63 £0.606 £0.60 £0.555 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: £1.20 85,998In 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	85,998In Stock	Cut Tape £1.20 £0.882 £0.803 £0.71 View Reel £0.58 £0.667 £0.641 £0.634 £0.599 £0.58 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: £1.75 15,219In 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	15,219In Stock	Cut Tape £1.75 £1.41 £1.28 £1.15 View Reel £0.96 £1.08 £1.05 £1.03 £1.02 £0.96 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: £1.85 7,159In Stock 7,500Expected 29/10/2026	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	7,159In Stock 7,500Expected 29/10/2026	Cut Tape £1.85 £1.37 £1.32 £1.18 Reel £1.00 View £1.11 £1.07 £1.03 £0.986 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: £1.73 12,959In Stock 12,000Expected 02/11/2026	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 02/11/2026	Cut Tape £1.73 £1.30 £1.20 £1.16 View Reel £0.995 £1.10 £1.07 £0.995 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: £1.53 14,972In Stock 18,000Expected 02/11/2026	Mfr. Part No. PCAL9555AHF,128 Mouser Part No 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 02/11/2026	Cut Tape £1.53 £1.13 £1.04 £0.925 View Reel £0.773 £0.871 £0.841 £0.773 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: £1.06 6,811In Stock 12,000Expected 03/05/2027	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	6,811In Stock 12,000Expected 03/05/2027	Cut Tape £1.06 £0.766 £0.695 £0.614 View Reel £0.506 £0.575 £0.533 £0.518 £0.512 £0.506 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: £1.06 2,586In 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	2,586In Stock	Cut Tape £1.06 £0.766 £0.695 £0.614 Reel £0.54 View £0.585 £0.561 £0.547 £0.525 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: £1.26 14,731In 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	14,731In Stock	Cut Tape £1.26 £0.952 £0.871 £0.788 View Reel £0.663 £0.742 £0.717 £0.715 £0.689 £0.663 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: £1.37 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 £1.37 £1.00 £0.917 £0.818 Reel £0.689 View £0.766 £0.737 £0.734 £0.673 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: £1.56 10,750In 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	10,750In Stock	Cut Tape £1.56 £1.15 £1.05 £0.943 View Reel £0.78 £0.882 £0.856 £0.818 £0.811 £0.78 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: £1.57 2,052In Stock 12,500Expected 23/11/2026	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	2,052In Stock 12,500Expected 23/11/2026	Cut Tape £1.57 £1.15 £1.05 £0.943 View Reel £0.818 £0.882 £0.856 £0.818 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: £1.32 4,042In Stock 5,000Expected 01/02/2027	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	4,042In Stock 5,000Expected 01/02/2027	Cut Tape £1.32 £0.978 £0.89 £0.796 Reel £0.691 View £0.773 £0.739 £0.738 £0.677 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: £1.27 11,972In Stock 60,000On Order	Mfr. Part No. PCA9554BBSHP Mouser Part No 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	11,972In Stock 60,000On Order On Order Ship Dates Mfr. No: PCA9554BBSHP Stock: 11,972 Can Dispatch Immediately On Order: 6,000 Expected 21/12/2026 54,000 Expected 03/05/2027 Factory Lead Time: 30 Weeks	Cut Tape £1.27 £0.943 £0.856 £0.759 View Reel £0.588 £0.71 £0.683 £0.678 £0.647 £0.588 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: £1.28 4,769In Stock 6,000Expected 03/05/2027	Mfr. Part No. PCA9554CBSHP Mouser Part No 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	4,769In Stock 6,000Expected 03/05/2027	Cut Tape £1.28 £0.943 £0.856 £0.759 View Reel £0.615 £0.711 £0.684 £0.678 £0.66 £0.615 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: £1.23 7,214In 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	7,214In Stock	Cut Tape £1.23 £0.908 £0.826 £0.729 View Reel £0.60 £0.685 £0.659 £0.654 £0.631 £0.60 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: £1.27 6,981In Stock 20,000Expected 26/10/2026	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	6,981In Stock 20,000Expected 26/10/2026	Cut Tape £1.27 £0.943 £0.849 £0.751 Reel £0.636 View £0.705 £0.678 £0.672 £0.599 MouseReel Available	Min.: 1 Mult.: 1 : 2,500

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