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PCA9544A中文资料飞利浦数据手册PDF规格书

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厂商型号

PCA9544A

功能描述

4-channel IC multiplexer with interrupt logic

文件大小

149.72 Kbytes

页面数量

18

生产厂商

PHI

中文名称

飞利浦

数据手册

下载地址一下载地址二

更新时间

2025-11-28 20:47:00

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PCA9544A规格书详情

DESCRIPTION

The PCA9544A is a 1-of-4 bi-directional 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 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 will be 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

• 1-of-4 bi-directional translating multiplexer

• I2C 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 RdsON 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 stand-by current

• Operating power supply voltage range of 2.3 V to 5.5 V

• 5 V tolerant Inputs

• 0 to 400 kHz clock frequency

• ESD protection exceeds 2000 V HBM per JESD22-A114,

200 V MM per JESD22-A115 and 1000 V per JESD22-C101

• Latchup testing is done to JESDEC Standard JESD78 which

exceeds 100 mA

• Three packages offered: SO20, TSSOP20, and HVQFN20

产品属性

  • 型号:

    PCA9544A

  • 制造商:

    TI

  • 制造商全称:

    Texas Instruments

  • 功能描述:

    4-CHANNEL I2C AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC

供应商 型号 品牌 批号 封装 库存 备注 价格
PHL
25+
TSSOP
18000
原厂直接发货进口原装
询价
恩XP
24+
NA/
75
优势代理渠道,原装正品,可全系列订货开增值税票
询价
恩XP
24+
TSSOP-20
20000
全新原厂原装,进口正品现货,正规渠道可含税!!
询价
TI/德州仪器
24+
TSSOP20
1
十年芯程一路原装
询价
PHI
0040+
TSOP16
2500
全新原装进口自己库存优势
询价
恩XP
25+
25000
原厂原包 深圳现货 主打品牌 假一赔百 可开票!
询价
恩XP
23+
TSSOP20
8160
原厂原装
询价
TIS
23+
PCA9544AZQNR
13528
振宏微原装正品,假一罚百
询价
恩XP
1824+
SOP20
2910
原装现货专业代理,可以代拷程序
询价
TI/德州仪器
23+
SOP20
87845
原厂授权一级代理,专业海外优势订货,价格优势、品种
询价