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TCA9544APWRG4.B中文资料德州仪器数据手册PDF规格书

TCA9544APWRG4.B
厂商型号

TCA9544APWRG4.B

功能描述

TCA9544A Low Voltage 4-Channel I2C and SMBus Multiplexer With Interrupt Logic

丝印标识

PW544A

封装外壳

TSSOP

文件大小

578.55 Kbytes

页面数量

29

生产厂商 Texas Instruments
企业简称

TI2德州仪器

中文名称

美国德州仪器公司官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-8-3 23:00:00

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TCA9544APWRG4.B规格书详情

1 Features

1• 1-of-4 Bidirectional Translating Switches

• I2C Bus and SMBus Compatible

• Four Active-Low Interrupt Inputs

• Active-Low Interrupt Output

• Three Address Pins, Allowing up to Eight

TCA9544A 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 1.8-V,

2.5-V, 3.3-V, and 5-V Buses

• No Glitch on Power-Up

• Supports Hot Insertion

• Low Standby Current

• Operating Power Supply Voltage Range of

1.65 V to 5.5 V

• 5.5-V Tolerant Inputs

• 0 to 400-kHz Clock Frequency

• Latch-Up Performance Exceeds 100 mA Per

JESD 78

• ESD Protection Exceeds JESD 22

– 4000-V Human-Body Model (A114-A)

– 1500-V Charged-Device Model (C101)

2 Applications

• Servers

• Routers (Telecom Switching Equipment)

• Factory Automation

• Products With I2C Slave Address Conflicts (For

Example, Multiple, Identical Temp Sensors)

3 Description

The TCA9544A is a 4-channel, bidirectional

translating I2C Muliplexer. The master SCL/SDA

signal pair is directed to one of the four channels of

slave devices, SC0/SD0-SC3/SD3. Four interrupt

inputs (INT3–INT0), one for each of the downstream

pairs, are provided. One interrupt output (INT) acts as

an AND of the four interrupt inputs.

A power-on reset function returns the registers to

their default state and initializes the I2C state

machine, with all channels deselected.

The pass gates of the switches are constructed such

that the VCC pin can be used to limit the maximum

high voltage which will be passed by the TCA9544A.

This 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.

供应商 型号 品牌 批号 封装 库存 备注 价格
TI(德州仪器)
24+
TSSOP20
7350
现货供应,当天可交货!免费送样,原厂技术支持!!!
询价
TI
2016+
TSSOP20
3000
主营TI,绝对原装,假一赔十,可开17%增值税发票!
询价
TI/德州仪器
25+
25000
原厂原包 深圳现货 主打品牌 假一赔百 可开票!
询价
TI
22+
TSSOP20
30594
原装正品现货,可开13个点税
询价
TI
24+
TSSOP20
6000
市场最低 原装现货 假一罚百 可开原型号
询价
TI
23+
TSSOP
3200
正规渠道,只有原装!
询价
TI/德州仪器
23+
TSSOP20
32732
原装正品代理渠道价格优势
询价
TI/德州仪器
22+
TSSOP20
6000
原装正品
询价
TI/德州仪器
24+
TSSOP-20
9600
原装现货,优势供应,支持实单!
询价
TI
23+
TSSOP
5000
全新原装,支持实单,非诚勿扰
询价