PCA9542A Datasheet 2-channel I2c-bus Multiplexer And Interrupt Logic

Manufacturer: NXP Semiconductors

Overview: PCA9542A Rev. 03 — 24 November 2008 .. 2-channel I2C-bus multiplexer and interrupt logic Product data sheet 1.

Datasheet Details

Part number	PCA9542A
Manufacturer	NXP Semiconductors
File Size	162.75 KB
Description	2-channel I2C-bus multiplexer and interrupt logic
Datasheet	PCA9542A_NXPSemiconductors.pdf

The PCA9542A is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.

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

Only one SCx/SDx channel is selected at a time, determined by the contents of the programmable control register.

I I I I I I I I I I I I I I I I 1-of-2 bidirectional translating multiplexer I2C-bus interface logic; compatible with SMBus 2 active LOW interrupt inputs (INT0, INT1) Active LOW interrupt output (INT) 3 address pins allowing up to 8 devices on the I2C-bus Channel selection via I2C-bus Powers up with all multiplexer channels deselected Low Ron switches Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses No glitch on power-up Supports hot insertion Low standby current Operat.

Brand Logo	Part Number	Description	Manufacturer
	PCA9542	2-channel I2C multiplexer and interrupt controller	NXP

Part Number	Description
PCA9541	2-to-1 I2C-bus master selector
PCA9541A	2-to-1 I2C-bus master selector
PCA9543A	2-channel I2C-bus switch
PCA9543B	2-channel I2C-bus switch
PCA9543C	2-channel I2C-bus switch
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