PCA9557D,118 The PCA9557D,118 from NXP Semiconductors is an 8-bit I2C and SMBus compatible I/O port expander. It features a 400 kHz clock frequency and operates from 2.3V to 5.5V.
Mfr Part #:

PCA9557D,118

Available from 1 distributors
Mfr Name: NXP Semiconductors
NXP Semiconductors
The PCA9557D,118 from NXP Semiconductors is an 8-bit I2C and SMBus compatible I/O port expander. It features a 400 kHz clock frequency and operates from 2.3V to 5.5V.
Total Stock: 4,000 pcs
$ Price Range: $1.15

PCA9557D,118 Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
4,000 pcs
4000 pcs On Request 1 On Request On Request On Request On Request 2026-02-16 21:33:16

PCA9557D,118 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Frequency
Current
ESD Protection
Features
Interface
Interrupt Output
Mounting Type
Number of I
Operating Temperature
Output Type
Supplier Device Package
Voltage

PCA9557D,118 Description

Short technical summary and product information.

The PCA9557D,118 is an 8-bit silicon CMOS circuit designed for parallel input/output expansion in SMBus and I2C-bus applications. Manufactured by NXP Semiconductors, this device offers an 8-bit input port register, an 8-bit output port register, and an I2C-bus/SMBus interface.

 

Key features include a configurable input/output configuration register, an active HIGH polarity inversion register, and noise filters on SCL/SDA inputs. It supports a clock frequency of up to 400 kHz and operates within a voltage range of 2.3 V to 5.5 V. The device also includes an active LOW reset input and internal power-on reset functionality.

 

Designed for surface mount, the PCA9557D,118 comes in a 16-SOIC package. It boasts 5 V tolerant inputs/outputs and provides an open-drain output on IO0. The part is suitable for applications requiring flexible I/O expansion with standard serial communication protocols.

PCA9557D,118 Quick Information

Product Type: IO Expander
Canonical Name: PCA9557D,118 8-bit I2C-bus and SMBus I/O Port Expander
Subcategory: IO Expander

PCA9557D,118 Compliance

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

PCA9557D,118 Estimated Pricing

Qty Low High
1+ $1.15 $1.15

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

PCA9557D,118 Features

  • 8-bit I2C/SMBus I/O expander.
  • Supports 400 kHz clock frequency.
  • Operates from 2.3V to 5.5V supply.
  • Surface mount 16-SOIC package.
  • Configurable input/output registers.

PCA9557D,118 Applications

  • Ideal for I2C bus expansion.
  • Used in embedded control systems.
  • Provides flexible digital I/O.
  • Suitable for low-power applications.

PCA9557D,118 FAQs

4 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the PCA9557D,118?

The PCA9557D,118 operates from 2.3 V to 5.5 V.

What package type is the PCA9557D,118 available in?

The PCA9557D,118 is available in a 16-SOIC package.

What is the operating temperature range for the PCA9557D,118?

The PCA9557D,118 has an operating temperature range of -40°C to 85°C.

Is the PCA9557D,118 RoHS compliant?

Yes, the PCA9557D,118 is RoHS3 Compliant.

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