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PCA9544AD集成电路(IC)的专用规格书PDF中文资料

PCA9544AD
厂商型号

PCA9544AD

参数属性

PCA9544AD 封装/外壳为20-TFSOP(0.173",4.40mm 宽);包装为卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带;类别为集成电路(IC)的专用;PCA9544AD应用范围:转换开关;产品描述:IC INTERFACE SPECIALIZED 20TVSOP

功能描述

4-channel I2C-bus multiplexer with interrupt logic

封装外壳

20-TFSOP(0.173",4.40mm 宽)

文件大小

143.91 Kbytes

页面数量

27

生产厂商 未知制造商
企业简称

恩XP

中文名称

未知制造商

数据手册

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更新时间

2025-6-23 10:12:00

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PCA9544AD规格书详情

General description

The PCA9544A is a 1-of-4 bidirectional translating multiplexer, controlled via the I2C-bus. The SCL/SDA upstream pair fans out to four SCx/SDx downstream pairs, or channels. Only one SCx/SDx channel is selected at a time, determined by the contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one for each of the SCx/SDx downstream pairs, are provided. One interrupt output, INT, which acts as an AND of the four interrupt inputs, is provided.

A power-on reset function puts the registers in their default state and initializes the I2C-bus state machine with no channels selected.

The pass gates of the multiplexer are constructed such that the VDD pin can be used to limit the maximum high voltage which is passed by the PCA9544A. This allows the use of different bus voltages on each SCx/SDx 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 V tolerant.

Features and benefits

■ 1-of-4 bidirectional translating multiplexer

■ I2C-bus interface logic; compatible with SMBus

■ 4 active LOW interrupt inputs

■ Active LOW interrupt output

■ 3 address pins allowing up to 8 devices on the I2C-bus

■ Channel selection via I2C-bus

■ Power-up with all multiplexer 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 2.3 V to 5.5 V

■ 5 V tolerant Inputs

■ 0 Hz to 400 kHz clock frequency

■ ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101

■ Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

■ Three packages offered: SO20, TSSOP20 and HVQFN20

产品属性

  • 产品编号:

    PCA9544ADGVR

  • 制造商:

    Texas Instruments

  • 类别:

    集成电路(IC) > 专用

  • 包装:

    卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带

  • 应用:

    转换开关

  • 接口:

    I²C,SMBus

  • 电压 - 供电:

    2.3V ~ 5.5V

  • 封装/外壳:

    20-TFSOP(0.173",4.40mm 宽)

  • 供应商器件封装:

    20-TVSOP

  • 安装类型:

    表面贴装型

  • 描述:

    IC INTERFACE SPECIALIZED 20TVSOP

供应商 型号 品牌 批号 封装 库存 备注 价格
TI
16+
原厂封装
10000
全新原装正品,代理优势渠道供应,欢迎来电咨询
询价
PHI
25+
TSOP20
7875
⊙⊙新加坡大量现货库存,深圳常备现货!欢迎查询!⊙
询价
恩XP
2022
SOP
1120
询价
TI/德州仪器
25+
SOIC20
8880
原装认准芯泽盛世!
询价
TI/德州仪器
23+
SOIC20
9990
正规渠道,只有原装!
询价
恩XP
1824+
SOP20
2910
原装现货专业代理,可以代拷程序
询价
恩XP
23+
SOP20
12300
询价
恩XP
24+
20-SO
35200
一级代理/放心采购
询价
PHI
23+
SOP
50000
全新原装正品现货,支持订货
询价
TI
23+
SOIC20
8560
受权代理!全新原装现货特价热卖!
询价