PCA9543C Datasheet 2-channel I2c-bus Switch

Manufacturer: NXP Semiconductors

Overview: PCA9543A/43B/43C Rev. 05 — 17 November 2008 .. 2-channel I2C-bus switch with interrupt logic and reset Product data sheet 1.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

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 bination of channels can be selected, determined by the contents of the programmable control register.

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.

Brand Logo	Part Number	Description	Manufacturer
	PCA9543	2-channel I2C switch	NXP
	PCA9543A	2-Channel I2C Bus Switch	Texas Instruments

Part Number	Description
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
PCA9507	2-wire serial bus extender
PCA9510A	Hot swappable I2C-bus and SMBus bus buffer