Datasheet4U Logo Datasheet4U.com

PCA9543C - 2-channel I2C-bus switch

This page provides the datasheet information for the PCA9543C, a member of the PCA9543A 2-channel I2C-bus switch family.

Datasheet Summary

Description

The PCA9543A/43B/43C is a bidirectional translating switch, controlled by the I2C-bus.

The SCL/SDA upstream pair fans out to two downstream pairs, or channels.

Any individual SCx/SDx channels or combination of channels can be selected, determined by the contents of the programmable control register.

Features

  • I I I I I I I I I I I I I I I 1-of-2 bidirectional translating switches I2C-bus interface logic; compatible with SMBus standards 2 active LOW interrupt inputs Active LOW interrupt output Active LOW reset input 2 address pins allowing up to 4 devices on the I2C-bus Alternate address versions A, B and C allow up to a total of 12 devices on the bus for larger systems or to resolve address conflicts Channel selection via I2C-bus, in any combination Power-up with all switch channels deselected Low Ron.

📥 Download Datasheet

Datasheet preview – PCA9543C

Datasheet Details

Part number PCA9543C
Manufacturer NXP Semiconductors
File Size 169.47 KB
Description 2-channel I2C-bus switch
Datasheet download datasheet PCA9543C Datasheet
Additional preview pages of the PCA9543C datasheet.

📁 Similar Datasheet

  • PCA9543 - 2-channel I2C switch (NXP)
  • PCA9543A - 2-Channel I2C Bus Switch (Texas Instruments)
  • PCA9540 - 2-channel I2C multiplexer (NXP)
  • PCA9540B - 2-channel I2C-bus multiplexer (NXP)
  • PCA9542 - 2-channel I2C multiplexer and interrupt controller (NXP)
  • PCA9544 - 4-channel I2C multiplexer and interrupt controller (NXP)
  • PCA9544A - 4-channel I2C-bus multiplexer (NXP)
  • PCA9544A - Low Voltage 4-Channel I2C and SMBus Multiplexer (Texas Instruments)
  • PCA9544ABS - 4-channel I2C-bus multiplexer (NXP)
  • PCA9544AD - 4-channel I2C-bus multiplexer (NXP)
Other Datasheets by NXP Semiconductors
  • PCA9543A - 2-channel I2C-bus switch
  • PCA9543B - 2-channel I2C-bus switch
  • PCA9541 - 2-to-1 I2C-bus master selector
  • PCA9541A - 2-to-1 I2C-bus master selector
  • PCA9542A - 2-channel I2C-bus multiplexer and interrupt logic
  • PCA9549 - Octal bus switch
  • PCA9502 - 8-bit I/O expander
  • PCA9506 - 40-bit I2C-bus I/O port

Full PDF Text Transcription

Click to expand full text
PCA9543A/43B/43C Rev. 05 — 17 November 2008 www.DataSheet4U.com 2-channel I2C-bus switch with interrupt logic and reset Product data sheet 1. General description The PCA9543A/43B/43C is a bidirectional translating switch, controlled by the I2C-bus. The SCL/SDA upstream pair fans out to two downstream pairs, or channels. Any individual SCx/SDx channels or combination of channels can be selected, determined by the contents of the programmable control register. Two interrupt inputs, INT0 and INT1, one for each of the downstream pairs, are provided. One interrupt output, INT, which acts as an AND of the two interrupt inputs, is provided. An active LOW reset input allows the PCA9543X to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state.
Published: |