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PCA8574A

更新时间： 2024-11-12 04:11:03

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
27页	160K
描述
Remote 8-bit I/O expander for I2C-bus with interrupt

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PCA8574A 数据手册

PCA8574/74A

Remote 8-bit I/O expander for I²C-bus with interrupt

Rev. 02 — 14 May 2007

Product data sheet

1. General description

The PCA8574/74A provide general purpose remote I/O expansion for most

microcontroller families via the two-line bidirectional I²C-bus (serial clock (SCL), serial

data (SDA)).

The devices consist of an 8-bit quasi-bidirectional port and an I²C-bus interface. The

PCA8574/74A have low current consumption and include latched outputs with 25 mA high

current drive capability for directly driving LEDs.

The PCA8574/74A also possess an interrupt line (INT) that can be connected to the

interrupt logic of the microcontroller. By sending an interrupt signal on this line, the remote

I/O can inform the microcontroller if there is incoming data on its ports without having to

communicate via the I²C-bus.

The internal Power-On Reset (POR) initializes the I/Os as inputs.

2. Features

I 400 kHz I²C-bus interface

I 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os

I 8-bit remote I/O pins that default to inputs at power-up

I Latched outputs with 25 mA sink capability for directly driving LEDs

I Total package sink capability of 200 mA

I Active LOW open-drain interrupt output

I 8 programmable slave addresses using 3 address pins

I Readable device ID (manufacturer, device type, and revision)

I Low standby current (10 µA max.)

I −40 °C to +85 °C operation

I ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115, and 1000 V CDM per JESD22-C101

I Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA

I Packages offered: DIP16, SO16, TSSOP16, SSOP20

3. Applications

I LED signs and displays

I Servers

I Industrial control

I Medical equipment

I PLCs

12 3 4 5 6 7...27

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与PCA8574A相关器件

型号	品牌	获取价格	描述	数据表
PCA8574AD	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574AD,112	NXP	获取价格	PCA8574/74A - Remote 8-bit I/O expander for I
PCA8574AD,512	NXP	获取价格	PCA8574/74A - Remote 8-bit I/O expander for I
PCA8574AN	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574AN,112	NXP	获取价格	PCA8574/74A - Remote 8-bit I/O expander for I
PCA8574APW	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574ATS	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574ATS,112	NXP	获取价格	PCA8574/74A - Remote 8-bit I/O expander for I
PCA8574D	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574N	NXP	获取价格	Remote 8-bit I/O expander for I2C-bus with interrupt