TCA9545APWR - Texas Instruments

Manufacturer Part Number

TCA9545APWR

Manufacturer

Texas Instruments

Introduction

The TCA9545APWR is a 4-channel I2C bus switch with reset, part of Texas Instruments' logic and signal switching product line, designed for multiplexing digital signals.

Product Features and Performance

Supports 4 bidirectional translating switches

I2C Bus and SMBus compatible

Active-low reset input

Channel selection via I2C bus

Low standby current

Power-up with all switch channels deselected

Noise filter on SCL/SDA inputs

65V to 5.5V operation

Supports hot insertion

Product Advantages

Enables up to 4 I2C/SMBus slaves with the same address to be connected to a single bus

Allows voltage-level translation between 1.8V, 3.3V, and 5V buses

Prevents I2C bus locking if an I2C slave becomes non-responsive

Low power consumption enhances system power efficiency

Key Technical Parameters

Circuit: 2 x 1:4

Independent Circuits: 1

Voltage Supply Source: Single Supply

Voltage Supply: 1.65V ~ 5.5V

Operating Temperature: -40°C ~ 85°C

Package/Case: 20-TSSOP

Quality and Safety Features

Built-in fault protection

Overvoltage tolerant

Complies with industry-standard quality and reliability standards

Compatibility

Compatible with I2C and SMBus protocols

Supports various microcontrollers and processors with I2C interface

Application Areas

I2C bus expansion in embedded systems

Communications equipment

Servers

PCs and laptops

Consumer electronics

Product Lifecycle

Active product status, ensuring availability and support for ongoing and new designs

No current indication of discontinuation, ensuring long-term availability

Several Key Reasons to Choose This Product

Facilitates I2C bus architecture expansion, allowing for more peripheral connections

Solves address conflict issues in complex I2C environments by allowing identical devices on the same bus

Minimizes power consumption for battery-powered devices

Supports wide voltage range, providing design flexibility across different voltages

Ease of implementation with industry-standard package and digital interface