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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 14:10:00

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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
恩XP
23+
TSSOP
65480
询价
TI
20+
TSSOP-20
2960
诚信交易大量库存现货
询价
PHI
22+
TSSOP
3000
原装正品,支持实单
询价
PHI
06+
TSSOP/20
1155
原装现货海量库存欢迎咨询
询价
PHI
24+
SSOP
5989
公司原厂原装现货假一罚十!特价出售!强势库存!
询价
恩XP
25+
TSSOP20
12500
全新原装现货,假一赔十
询价
TI/德州仪器
21+
TSSOP20
6000
百域芯优势 实单必成 可开13点增值税
询价
TI/德州仪器
23+
TSSOP20
18204
原装正品代理渠道价格优势
询价
TI
25+
TSSOP20
3000
百分百原装正品 真实公司现货库存 本公司只做原装 可
询价
TI
23+
TSSOP20
8600
受权代理!全新原装现货特价热卖!
询价