PCA9549 Datasheet PDF - NXP Semiconductors Octal bus switch Specs

PCA9549 - Octal bus switch

Datasheet Summary

Description

The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled by the I2C-bus.

The low ON-state resistance of the switch allows connections to be made with minimal propagation delay.

Features

I 8-bit bus switch (CBT) I 5 Ω switch connection between two ports I I2C-bus interface logic; compatible with SMBus standards I Active LOW RESET input I 3 address pins allowing up to 8 devices on the I2C-bus I Bit selection via I2C-bus, in any combination I Power-up with all bits deselected I Low Ron switches I No glitch on power-up I Supports hot insertion I Low standby current I Operating power supply voltage range of 2.3 V to 5.5 V I 5 V tolerant inputs I 0 Hz to 400 kHz clock frequency I ESD.

Datasheet Details

Part number	PCA9549
Manufacturer	NXP Semiconductors
File Size	139.57 KB
Description	Octal bus switch
Datasheet	PCA9549 Datasheet
Additional preview pages of the PCA9549 datasheet.

📁 Similar Datasheet

PCA9540 - 2-channel I2C multiplexer (NXP)

PCA9540B - 2-channel I2C-bus multiplexer (NXP)

PCA9542 - 2-channel I2C multiplexer and interrupt controller (NXP)

PCA9543 - 2-channel I2C switch (NXP)

PCA9543A - 2-Channel I2C Bus Switch (Texas Instruments)

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)

Full PDF Text Transcription

Click to expand full text

PCA9549 Octal bus switch with individually I2C-bus controlled enables Rev. 02 — 13 July 2009 Product data sheet 1. General description The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlled by the I2C-bus. The low ON-state resistance of the switch allows connections to be made with minimal propagation delay. Any individual A to B channel or combination of channels can be selected via the I2C-bus, determined by the contents of the programmable Control register. When the I2C-bus bit is HIGH (logic 1), the switch is on and data can ﬂow from Port A to Port B, or vice versa. When the I2C-bus bit is LOW (logic 0), the switch is open, creating a high-impedance state between the two ports, which stops the data ﬂow.

Published: May 31, 2010 |