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Datasheet > PCF8574TS/3,112
PCF8574TS/3,112 PDF预览

PCF8574TS/3,112

更新时间： 2024-11-11 15:47:35
品牌 Logo 应用领域
恩智浦 - NXP PC光电二极管外围集成电路
页数 文件大小 规格书
33页 814K
描述
PCF8574; PCF8574A - Remote 8-bit I/O expander for I²C‑bus with interrupt SSOP2 20-Pin

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PCF8574TS/3,112 技术参数

是否Rohs认证：符合生命周期：Obsolete
零件包装代码：SSOP2包装说明：4.40 MM, PLASTIC, MO-152, SOT-266-1, SSOP-20
针数：20Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：7.71
Is Samacsys：NJESD-30 代码：R-PDSO-G20
JESD-609代码：e4长度：6.5 mm
湿度敏感等级：1位数：8
I/O 线路数量：8端口数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：LSSOP封装等效代码：SSOP20,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：260电源：3/5 V
认证状态：Not Qualified座面最大高度：1.5 mm
子类别：Parallel IO Ports最大供电电压：6 V
最小供电电压：2.5 V标称供电电压：5 V
表面贴装：YES技术：CMOS
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4.4 mmuPs/uCs/外围集成电路类型：PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches：1

PCF8574TS/3,112 数据手册

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PCF8574; PCF8574A  
Remote 8-bit I/O expander for I2C-bus with interrupt  
Rev. 5 — 27 May 2013  
Product data sheet  
1. General description  
The PCF8574/74A provides general-purpose remote I/O expansion via the two-wire  
bidirectional I2C-bus (serial clock (SCL), serial data (SDA)).  
The devices consist of eight quasi-bidirectional ports, 100 kHz I2C-bus interface, three  
hardware address inputs and interrupt output operating between 2.5 V and 6 V. The  
quasi-bidirectional port can be independently assigned as an input to monitor interrupt  
status or keypads, or as an output to activate indicator devices such as LEDs. System  
master can read from the input port or write to the output port through a single register.  
The low current consumption of 2.5 A (typical, static) is great for mobile applications and  
the latched output ports directly drive LEDs.  
The PCF8574 and PCF8574A are identical, except for the different fixed portion of the  
slave address. The three hardware address pins allow eight of each device to be on the  
same I2C-bus, so there can be up to 16 of these I/O expanders PCF8574/74A together on  
the same I2C-bus, supporting up to 128 I/Os (for example, 128 LEDs).  
The active LOW open-drain interrupt output (INT) can be connected to the interrupt logic  
of the microcontroller and is activated when any input state differs from its corresponding  
input port register state. It is used to indicate to the microcontroller that an input state has  
changed and the device needs to be interrogated without the microcontroller continuously  
polling the input register via the I2C-bus.  
The internal Power-On Reset (POR) initializes the I/Os as inputs with a weak internal  
pull-up 100 A current source.  
2. Features and benefits  
I2C-bus to parallel port expander  
100 kHz I2C-bus interface (Standard-mode I2C-bus)  
Operating supply voltage 2.5 V to 6 V with non-overvoltage tolerant I/O held to VDD  
with 100 A current source  
8-bit remote I/O pins that default to inputs at power-up  
Latched outputs directly drive LEDs  
Total package sink capability of 80 mA  
Active LOW open-drain interrupt output  
Eight programmable slave addresses using three address pins  
Low standby current (2.5 A typical)  
40 C to +85 C operation  
ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per  
JESD22-C101  
 
 
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PCF8574TS/3,112 替代型号

型号 品牌 替代类型 描述 数据表
PCF8574ATS/3,118 NXP

完全替代

 PCF8574; PCF8574A - Remote 8-bit I/O expander
PCF8574TS/3 NXP

完全替代

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

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