Interface - I/O Expanders

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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 (INR) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Mounting Style	Package/Case	Interface Type	Number of I/Os	Interrupt Output	Supply Voltage - Min	Supply Voltage - Max	Maximum Clock Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Packaging	ESD Protection
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: ₹254.14 106In Stock 20,000On Order	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	106In Stock 20,000On Order On Order Ship Dates Mfr. No: PCAL9535APW,118 Stock: 106 Can Dispatch Immediately On Order: 5,000 Expected 30-09-2026 10,000 Expected 14-10-2026 5,000 Expected 21-10-2026 Factory Lead Time: 30 Weeks	Cut Tape ₹254.14 ₹189.17 ₹172.93 ₹154.77 View Reel ₹127.07 ₹141.40 ₹137.58 ₹134.71 ₹127.07 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	PCAL9535A	SMD/SMT	TSSOP-24	I2C, Serial	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Reset in TSSOP24 package PCA9539APW,118 NXP Semiconductors 1: ₹182.48 16,765On Order	Mfr. Part No. PCA9539APW,118 Mouser Part No 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	16,765On Order On Order Ship Dates Mfr. No: PCA9539APW,118 Stock: 0 On Order: 1,765 Expected 05-01-2027 10,000 Expected 18-03-2027 5,000 Expected 22-03-2027 Factory Lead Time: 30 Weeks	Cut Tape ₹182.48 ₹134.71 ₹122.29 ₹108.92 View Reel ₹94.11 ₹104.14 ₹101.27 ₹94.11 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	PCA9539A	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
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: ₹162.42 72,000On 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	72,000On Order On Order Ship Dates Mfr. No: PCA9554BBSHP Stock: 0 On Order: 18,000 Expected 01-04-2027 18,000 Expected 05-04-2027 36,000 Expected 15-04-2027 Factory Lead Time: 30 Weeks	Cut Tape ₹162.42 ₹119.43 ₹108.92 ₹96.50 View Reel ₹74.71 ₹90.29 ₹86.85 ₹86.27 ₹82.36 ₹74.71 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	PCA9554B	SMD/SMT	HVQFN-16	I2C, Serial, SMBus	8 I/O	With Interrupt	1.65 V	5.5 V	100 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
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: ₹159.55 27,356On Order	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	27,356On Order On Order Ship Dates Mfr. No: PCAL6416APW,118 Stock: 0 On Order: 7,356 Expected 01-10-2026 20,000 Expected 19-10-2026 Factory Lead Time: 30 Weeks	Cut Tape ₹159.55 ₹116.56 ₹106.05 ₹93.34 View Reel ₹76.24 ₹87.71 ₹84.27 ₹83.31 ₹76.24 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	PCAL6416A	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV
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: ₹159.55 11,241On Order	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	11,241On Order On Order Ship Dates Mfr. No: PCA9554CBSHP Stock: 0 On Order: 5,241 Expected 21-10-2026 6,000 Expected 15-04-2027 Factory Lead Time: 30 Weeks	Cut Tape ₹159.55 ₹116.56 ₹106.05 ₹94.20 View Reel ₹78.25 ₹88.47 ₹85.03 ₹83.98 ₹78.25 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	PCA9554C	SMD/SMT	HVQFN-16	I2C, Serial, SMBus	8 I/O	With Interrupt	1.65 V	5.5 V	100 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in TSSOP24 package PCA9555APW,118 NXP Semiconductors 1: ₹186.30 9,995Expected 29-03-2027	Mfr. Part No. PCA9555APW,118 Mouser Part No 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	9,995Expected 29-03-2027	Cut Tape ₹186.30 ₹141.40 ₹125.16 ₹111.78 View Reel ₹96.50 ₹105.09 ₹101.27 ₹96.50 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	PCA9555A	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel	2 kV

I2C General Purpose I/O Expanders

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