Datasheet > DIO74548

DIO74548

更新时间： 2024-11-21 17:00:55

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帝奥微 - DIOO		/
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描述
The DIO74548 is an 8-channel, bidirectional translating switch that can be controlled through the

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DIO74548 数据手册

DIO74548, Version 1.1, Aug 2023

DIO74548

Low-Voltage, 8-Channel I²C Switch with Reset

Description

The DIO74548 is an 8-channel, bidirectional translating switch that can be controlled through the I²C bus.

The SCL/SDA upstream signal pair fans out to eight downstream pairs, or channels. The contents of the

programmable control register determine the pair or pairs of SCn/SDn to be selected. The downstream

channels resolve the I²C slave address conflicts.

____________

Either asserting the RESET pin low or cycling the power supply, which is called power-on reset (POR),

resets the state machine of the device and deselect all channels if one of the downstream I²C buses get

stuck in a low state.

The voltage conversion feature enables parts of 1.8 V, 2.5 V, or 3.3 V to communicate with 5 V parts

without any additional protection by using external pull-up resistors to pull the bus to the desired voltage

level for each channel. All I/O pins have a 5 V tolerance.

Features



1-to-8 bidirectional translating switches

I²C bus and SMBus compatible

Active-low reset input



No glitch on power-up

Supports hot insertion

Low standby current

Three address pins, allowing up to eight

DIO74548 devices on the I²C bus

Channel selection through an I²C bus, in any

combination

Operating power-supply voltage range: 1.65 V

to 5.5 V



Input tolerance: 5 V

Clock frequency: 0 to 400 kHz

ESD HBM ±8000 V



Power up with all switch channels deselected

Low R_ONswitches

ESD CDM ±2000 V

Allows voltage-level translation between 1.8 V,

2.5 V, 3.3 V, and 5 V buses

Package: TSSOP24 and QFN4*4-24

Applications



Servers

Routers (telecom switching equipment)

Factory automation

Products with I²C slave address conflicts

www.dioo.com

12 3 4 5 6 7...27

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