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PCA9543APWR from TI,Texas Instruments

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PCA9543APWR

Manufacturer: TI

Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85

Partnumber Manufacturer Quantity Availability
PCA9543APWR TI 1139 In Stock

Description and Introduction

Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85 **Introduction to the PCA9543APWR from Texas Instruments**  

The PCA9543APWR is a dual bidirectional translating switch designed for I²C and SMBus systems. This versatile component enables communication between multiple I²C buses, allowing devices operating at different voltage levels to interface seamlessly. With two switch channels, it supports bidirectional voltage-level translation, making it ideal for applications requiring isolation or expansion of I²C networks.  

Featuring low on-state resistance and minimal propagation delay, the PCA9543APWR ensures efficient signal integrity while reducing power consumption. Its interrupt input functionality allows for event-driven communication, enhancing system responsiveness. The device operates within a wide voltage range (1.65V to 5.5V), accommodating diverse microcontroller and peripheral configurations.  

Housed in a compact TSSOP-16 package, the PCA9543APWR is well-suited for space-constrained designs, including industrial control systems, consumer electronics, and embedded applications. Its robust ESD protection ensures reliability in demanding environments.  

By simplifying I²C bus management and voltage translation, the PCA9543APWR provides a practical solution for designers seeking to optimize multi-bus architectures without compromising performance.

Application Scenarios & Design Considerations

Two-Channel I2C-Bus Switch With Interrupt Logic and Reset 14-TSSOP -40 to 85

Alternative Part Number

  • TCA9543APWR --: Pin-compatible 2-channel I2C switch from TI's TCA series with the same TSSOP-14 package and similar voltage range, often used as a direct drop-in replacement.
  • PCA9543AD,118 --: Original PCA9543A 2-channel I2C-bus switch from NXP (the originator of the PCA954x family) in SO-14 package; electrically equivalent function, requires footprint change.
  • PCA9543APW,118 --: NXP's TSSOP-14 version of the 2-channel I2C switch, same package style as the source and functionally equivalent, suitable when an NXP second source is preferred.

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