Datasheet > DIO74546

DIO74546

更新时间： 2024-11-18 17:15:35

品牌	Logo	应用领域
帝奥微 - DIOO		/
页数	文件大小	规格书
25页	3209K
描述
The DIO74546 is a four-channel bidirectional translating switch controlled via the I2C bus. The up

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DIO74546 数据手册

DIO74546, Version 1.0, Aug 2023

DIO74546

Low Voltage 4-Channel I²C and SMBus Switch

with Reset Function

Description

The DIO74546 is a four-channel bidirectional translating switch controlled via the I²C bus. The upstream pair,

SCL/SDA, can be connected to four downstream pairs or channels. Users can select any individual SCn/SDn

channel or a combination of channels by programming the control register.

The switch has an active-low reset input that allows it to recover if one of the downstream I²C buses is stuck in

____________

a low state. Pulling RESET low resets the I²C state machine and deselects all the channels, as does the

internal power-on reset function.

The pass gates of the switches are designed to limit the maximum high voltage that passes through the VCC

pin. This feature allows the use of different bus voltages on each pair, so that 1.8 V, 2.5 V, or 3.3 V parts can

communicate with 5 V parts without any additional protection. External pull-up resistors pull the bus up to the

desired voltage level for each channel. All I/O pins are 5.5 V tolerant.

Features



1-of-4 bidirectional translating switches

I²C bus and SMBus compatible

Active-low reset input



Allows voltage-level translation between 1.8 V,

2.5 V, 3.3 V, and 5 V buses

No glitch on power-up



Three address pins, allowing up to four

DIO74546 devices on the I²C bus

Channel selection via I²C bus, in any

combination

Supports hot insertion

Low standby current



Power-supply voltage range: 1.65 V to 5.5 V

5.5 V tolerant inputs



Power-up with all switch channels deselected

Low R_ONswitches

0 to 400 kHz clock frequency

Applications



Servers

Routers (telecom switching equipment)

Factory automation

Products with I²C slave address conflicts (multiple, identical temp sensors)

www.dioo.com

12 3 4 5 6 7...25

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