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PCA9555D,112 The NXP Semiconductors PCA9555D,112 is a 16-bit I/O expander designed for I2C/SMBus applications. It offers a wide operating voltage range and a 400 kHz clock frequency.
Mfr Part #:

PCA9555D,112

Available from 1 distributors
Mfr Name: NXP Semiconductors
NXP Semiconductors
The NXP Semiconductors PCA9555D,112 is a 16-bit I/O expander designed for I2C/SMBus applications. It offers a wide operating voltage range and a 400 kHz clock frequency.
✓ Total Stock: 10,000 pcs
$ Price Range: $1.15

PCA9555D,112 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Risen Electronics ✓
Non-Authorised Inventory information
10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16
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PCA9555D,112 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
Features
Input Voltage
Interface
Interrupt Output
Mounting Type
Number of I
Operating Temperature
Output Type
Output Voltage
Power Dissipation
Supplier Device Package
Voltage
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PCA9555D,112 Description

Short technical summary and product information.

The PCA9555D,112 from NXP Semiconductors is a 16-bit General Purpose Parallel Input/Output (GPIO) expander designed for I2C-bus and SMBus applications. This CMOS device enhances I/O capabilities with features like 5V I/O tolerance, low supply current, and individual I/O configuration. It is suitable for applications requiring additional I/O for ACPI power switches, sensors, push buttons, LEDs, and fans.

 

The device operates within a supply voltage range of 2.3V to 5.5V and supports a clock frequency up to 400 kHz. It features two 8-bit registers for configuration (input or output selection), input data, output data, and polarity inversion. The PCA9555D,112 includes an open-drain interrupt output that activates when an input state changes, signaling the system master.

 

Packaged in a 24-SOIC format, the PCA9555D,112 is designed for surface mount applications. It operates across a temperature range of -40°C to 85°C. The device provides 16 I/O pins that default to inputs, offering flexibility in system design. Its interface type is I2C and SMBus, making it compatible with many microcontrollers and embedded systems.

PCA9555D,112 Quick Information

Product Type: I/O Expander
Canonical Name: PCA9555D,112 16-bit I2C/SMBus I/O Expander
Subcategory: I/O Expanders

PCA9555D,112 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

PCA9555D,112 Estimated Pricing

Qty Low High
1+ $1.15 $1.15

Estimated market price range - modelled values for guidance only, not live distributor offers.

PCA9555D,112 Features

  • 16-bit I/O expansion for I2C/SMBus.
  • Wide operating voltage from 2.3V to 5.5V.
  • Supports 400 kHz clock frequency.
  • 5V tolerant I/Os for flexibility.
  • Surface mount 24-SOIC package.

PCA9555D,112 Applications

  • Expands I/O for microcontrollers.
  • Interface for sensors and switches.
  • Control for LEDs and fans.
  • ACPI power management applications.

PCA9555D,112 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the PCA9555D,112?

The operating voltage range is from 2.3 V to 5.5 V.

How many I/O pins does the PCA9555D,112 have?

It has 16 I/O pins.

What is the package type of the PCA9555D,112?

It is packaged in a 24-SO surface-mount package.

What is the maximum output current per pin for the PCA9555D,112?

The maximum output current per pin is 25 mA.

What communication interfaces does the PCA9555D,112 support?

It supports I2C and SMBus interfaces.

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