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PCA8574PW,118 产品手册 - NXP（恩智浦）
制造商:
NXP（恩智浦）
分类:
接口芯片
封装:
TSSOP-16
描述:
PCA8574PW,118 编带
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PCA8574PW,118数据手册
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1. General description
The PCA8574/74A provide general purpose remote I/O expansion for most
microcontroller families via the two-line bidirectional I
2
C-bus (serial clock (SCL), serial
data (SDA)).
The devices consist of an 8-bit quasi-bidirectional port and an I
2
C-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 I
2
C-bus.
The internal Power-On Reset (POR) initializes the I/Os as inputs.
2. Features
n 400 kHz I
2
C-bus interface
n 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os
n 8-bit remote I/O pins that default to inputs at power-up
n Latched outputs with 25 mA sink capability for directly driving LEDs
n Total package sink capability of 200 mA
n Active LOW open-drain interrupt output
n 8 programmable slave addresses using 3 address pins
n Readable device ID (manufacturer, device type, and revision)
n Low standby current (10 µA max.)
n −40 °C to +85 °C operation
n ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115, and 1000 V CDM per JESD22-C101
n Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
n Packages offered: DIP16, SO16, TSSOP16, SSOP20
3. Applications
n LED signs and displays
n Servers
n Industrial control
n Medical equipment
n PLCs
PCA8574/74A
Remote 8-bit I/O expander for I
2
C-bus with interrupt
Rev. 02 — 14 May 2007 Product data sheet
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