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PCA9674ABS,118 PDF预览

PCA9674ABS,118

更新时间： 2024-11-14 15:47:35
品牌 Logo 应用领域
恩智浦 - NXP PC外围集成电路
页数 文件大小 规格书
40页 813K
描述
PCA9674; PCA9674A - Remote 8-bit I/O expander for Fm+ I²C-bus with interrupt QFN 16-Pin

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PCA9674ABS,118 技术参数

是否Rohs认证：符合生命周期：Active
零件包装代码：QFN包装说明：HVQCCN, LCC16,.12SQ,20
针数：16Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：1.16
Is Samacsys：NJESD-30 代码：S-PQCC-N16
JESD-609代码：e4长度：3 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：16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：HVQCCN封装等效代码：LCC16,.12SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260电源：2.3/5.5 V
认证状态：Not Qualified座面最大高度：1 mm
子类别：Parallel IO Ports最大供电电压：5.5 V
最小供电电压：2.3 V标称供电电压：3 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：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：40
宽度：3 mmuPs/uCs/外围集成电路类型：PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches：1

PCA9674ABS,118 数据手册

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PCA9674; PCA9674A  
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt  
Rev. 7 — 30 May 2013  
Product data sheet  
1. General description  
The PCA9674/74A 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, 1 MHz I2C-bus Fast-mode Plus  
(Fm+) family interface, with high speed data transfer it can support PWM dimming of  
LEDs, and higher I2C-bus drive 30 mA for more devices can be on the bus without the  
need for bus buffers. Three hardware address inputs and interrupt output operating  
between 2.3 V and 5.5 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. The system master can read from the input port or write to the  
output port through a single register.  
The low current consumption of 4.5 A (typical, static) is great for mobile applications and  
the latched output ports have 25 mA high current sink drive capability for directly driving  
LEDs.  
The PCA9674 and PCA9674A are identical except for the different, non-overlapping slave  
address. The three hardware selectable address pins can be decode to 64 addresses for  
the PCA9674 and 62 addresses for the PCA9674A, so there can be up to 126 of these I/O  
expanders PCA9674/74A together on the same I2C-bus without the need for bus buffers,  
supporting up to 1008 I/Os (for example, 1008 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  
1 MHz I2C-bus interface (Fast-mode Plus I2C-bus)  
SDA with 30 mA sink capability for 4000 pF buses  
Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to VDD with  
100 A current source  
8-bit remote I/O pins that default to inputs at power-up  
Latched outputs with 25 mA sink capability for directly driving LEDs  
Total package sink capability of 200 mA  
 
 
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