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PCA9557DR AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

PCA9557DR product

PCA9557DR

Interface

I/O ExpanderI2CTexas Instruments

The PCA9557DR is an 8-bit I2C/SMBus I/O expander from Texas Instruments, designed for low-power applications requiring additional I/O pins.

Best for

  • LED driving
  • Microcontroller I/O expansion

Avoid if

  • High-speed data transfer requirements

Check before use

  • I2C address conflicts
  • VCC voltage levels

Key specifications

I/O Count
8
Interface
I2C/SMBus
Supply Voltage
2.3V - 5.5V
Package
SOIC-16

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level-1-260C-UNLIM
ECCN
-
HTSUS
-

Application

General Purpose I/OLED Control

Datasheet

Texas-Instruments-company-64.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for PCA9557DR: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
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Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is an 8-bit I/O expander that communicates via I2C or SMBus, allowing microcontrollers to control up to 8 additional I/O pins.