NXP  PCA9555D,112  I/O Expander, 16bit, 400 kHz, I2C, SMBus, 2.3 V, 5.5 V, SOIC

NXP PCA9555D,112

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  • Manufacturer:
  • Newark Part No.: 70R6672
  • Manufacturer Part No PCA9555D,112

Product Overview

The PCA9555D,112 is a 16-bit CMOS I²C-bus and SMBus I/O Port with interrupt provides 16-bit of general purpose parallel input/output (GPIO) expansion for I²C-bus/SMBus applications and was developed to enhance the semiconductors family of I²C-bus I/O expanders. The improvements include higher drive capability, 5V I/O tolerance, lower supply current, individual I/O configuration and smaller packaging. I/O expanders provide a simple solution when additional I/O is needed for ACPI power switches, sensors, push buttons, LEDs, fans, etc. The PCA9555 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine.
  • Polarity inversion register
  • Active low interrupt output
  • Low standby current
  • Noise filter on SCL/SDA inputs
  • No glitch on power-up
  • Internal power-on reset


ESD sensitive device, take proper precaution while handling the device.
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Product Specifications, Documents & More

  • Bus Frequency: 400kHz
  • Chip Configuration: 16bit
  • IC Interface Type: I2C, SMBus
  • Interface Case Style: SOIC
  • MSL: MSL 1 - Unlimited
  • No. of I/O's: 16
  • No. of Pins: 24
  • Packaging: Each
  • SVHC: No SVHC (15-Jun-2015)
  • Supply Voltage Max: 5.5V
  • Supply Voltage Min: 2.3V
  • Supply Voltage Range: 2.3V to 5.5V


Availability:  635

  • 635 in stock for same day shipping
Check stock and lead times
    More stock available week commencing 4/4/16

Price for: Each 1

Minimum order quantity: 1

Order multiple quantity: 1

Price: $1.99 $1.99



Quantity List Price
1 - 9 $1.99
10 - 24 $1.79
25 - 99 $1.60
100 - 249 $1.44
250 - 499 $1.28
500 - 999 $1.12
1000 - 2499 $0.927
2500+ $0.863

Legislation and Environmental

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  Newark Part No. Manufacturer Part No Manufacturer / Description
Availability Price Qty
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I/O Expander, 16bit, 400 kHz, I2C, SMBus, 2.3 V, 5.5 V, SOIC


Price for: Full Reel 1

1000+ $0.927 2000+ $0.863 5000+ $0.831 10000+ $0.799

    More stock available week commencing 3/21/16

Not Normally Stocked

Non-Cancelable / Non Returnable

Suggested Substitutes



I/O Expander, 16bit, 400 kHz, I2C, SMBus, 2.3 V, 5.5 V, SOIC


Price for: Cut Tape 1

1+ $0.656 Promotional price 25+ $0.656 Promotional price 100+ $0.656 Promotional price 250+ $0.656 Promotional price


Available until stock is exhausted

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