PCA9849 Datasheet PDF (4-channel ultra-low voltage Fm+ I2C-bus multiplexer)

PCA9849 - 4-channel ultra-low voltage Fm+ I2C-bus multiplexer

Description

The PCA9849 is an ultra-low voltage, quad bidirectional translating multiplexer controlled via the I2C-bus.

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

A single SCx/SDx channel can be selected, determined by the programmable control register.

Features

Ultra-low voltage operation, down to 0.8 V to interface with next-generation CPUs.
1-of-4 bidirectional translating multiplexer.
Fm+ I2C-bus interface logic; compatible with SMBus standards.
Active LOW reset input.
2 address pins allowing up to 16 devices on the I2C-bus.
Channel selection via I2C-bus.
Power-up with all switch channels deselected.
Low Ron switches.
Allows voltage level translation between 0.8 V, 1.8 V, 2.5 V and 3.3 V buses.
Rese.

Datasheet Details

Part number	PCA9849
Manufacturer	NXP
File Size	962.71 KB
Description	4-channel ultra-low voltage Fm+ I2C-bus multiplexer
Datasheet	PCA9849 Datasheet
Additional preview pages of the PCA9849 datasheet.

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Full PDF Text Transcription

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PCA9849 4-channel ultra-low voltage, Fm+ I2C-bus multiplexer with reset Rev. 1 — 16 November 2015 Product data sheet 1. General description The PCA9849 is an ultra-low voltage, quad bidirectional translating multiplexer controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. A single SCx/SDx channel can be selected, determined by the programmable control register. This feature allows multiple devices with the same I2C-bus address to reside on the same bus. The multiplexer device can also separate a heavily loaded I2C-bus into separate bus segments, eliminating the need for a bus buffer. An active LOW reset input allows the PCA9849 to recover from a situation where one of the downstream I2C-buses is stuck in a LOW state.

Published: Oct 13, 2019 |