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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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model 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
NXP Semiconductors Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
Datasheet
71,595In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCAL6408A SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 16bit IO Expander Low Voltage VFBGA
Datasheet
4,987In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA6416 SMD/SMT VFBGA-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

NXP Semiconductors Interface - I/O Expanders 8b I2C/SMBus IO Port I2C Fixed Address
Datasheet
6,360In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
NXP Semiconductors Interface - I/O Expanders 16b I2C BUS INTERUPT
Datasheet
4,820In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCAL9539A 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
NXP Semiconductors Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
Datasheet
88,554In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCAL6408A SMD/SMT HVQFN-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 16-bit I2C-busSMBus Low Voltage
Datasheet
41,576In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCAL6416A SMD/SMT HWQFN-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
NXP Semiconductors Interface - I/O Expanders 16b I2C BUS INTERUPT
Datasheet
24,993In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
NXP Semiconductors Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package
Datasheet
7,511In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA6416 SMD/SMT HWQFN-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

NXP Semiconductors Interface - I/O Expanders 8bit IO Expander Low Voltage HVQFN
Datasheet
8,265In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA6408A SMD/SMT HVQFN-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 8bit IO Expander Low Voltage XQFN
Datasheet
3,690In Stock
11,900Expected 06/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

PCA6408A SMD/SMT XQFN-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 8bit IO Expander Low Voltage TSSOP
Datasheet
8,478In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCA6408A SMD/SMT TSSOP-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 16b I2C BUS INTERUPT
Datasheet
8,126In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCA6416 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
NXP Semiconductors Interface - I/O Expanders 16bit I2C IO Port
Datasheet
9,727In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA9535A SMD/SMT HWQFN-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
NXP Semiconductors Interface - I/O Expanders 16bit I2C IO Port
Datasheet
10,870In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCA9535A 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

NXP Semiconductors Interface - I/O Expanders 8bit I2C IO Port
Datasheet
6,650In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA9538A 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 2 kV
NXP Semiconductors Interface - I/O Expanders 8bit I2C IO Port
Datasheet
2,328In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCA9538A SMD/SMT TSSOP-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 2 kV
NXP Semiconductors Interface - I/O Expanders 16bit I2C IO Port
Datasheet
9,138In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA9539A SMD/SMT HWQFN-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
NXP Semiconductors Interface - I/O Expanders 16bit I2C IO Port
Datasheet
2,039In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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

NXP Semiconductors Interface - I/O Expanders 8b I2C/SMBus IO Port I2C Fixed Address
Datasheet
5,453In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
NXP Semiconductors Interface - I/O Expanders 8b I2C/SMBus IO Port I2C Fixed Address
Datasheet
10,504In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

PCA9554B SMD/SMT TSSOP-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
NXP Semiconductors Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt in HWQFN24 package
Datasheet
11,461In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCA9555A SMD/SMT HWQFN-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
NXP Semiconductors Interface - I/O Expanders 16b I2C BUS INTERUPT
Datasheet
4,784In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
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
Datasheet
6,830In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 5,000

PCAL6408A SMD/SMT X2QFN-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 8bit I2C/SMBus IO Expander w/Interrupt
Datasheet
3,474In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 4,000

PCAL6408A SMD/SMT XQFN-16 I2C, Serial, SMBus 8 I/O With Interrupt 1.65 V 5.5 V 400 kHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
NXP Semiconductors Interface - I/O Expanders 16bit I2C/SMBus IO Expander w/Interrupt
Datasheet
2,430In Stock
6,000Expected 19/02/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 6,000

PCAL6416A SMD/SMT VFBGA-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