Datasheet 搜索 > 接口芯片 > TI（德州仪器） > PCF8574ADWR 数据手册 > PCF8574ADWR 数据手册 1/35 页
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PCF8574ADWR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
接口芯片
封装:
SOIC-16
描述:
TEXAS INSTRUMENTS PCF8574ADWR 输入/输出扩展, 8bit, 100 kHz, I2C, 2.5 V, 6 V, SOIC
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引脚图在P3Hot
典型应用电路图在P15P16P17
原理图在P11P12P15
封装尺寸在P22P23P24P25
标记信息在P22P23
封装信息在P21P22P23P24P25
技术参数、封装参数在P4
应用领域在P1P35
电气规格在P5
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PCF8574ADWR数据手册
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PCF8574A
I2C or SMBus Master
(e.g. Processor)
Peripheral Devices
RESET, ENABLE,
or control inputs
INT or status
outputs
LEDs
SDA
SCL
INT
A0
A1
A2
GND
VCC
P0
P1
P2
P3
P4
P5
P6
P7
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
PCF8574A
SCPS069F –JULY 2001–REVISED NOVEMBER 2015
PCF8574A Remote 8-Bit I/O Expander for I
2
C Bus
1
1 Features
• Low Standby-Current Consumption of 10 μA Max 3 Description
This 8-bit input/output (I/O) expander for the two-line
• I
2
C to Parallel-Port Expander
bidirectional bus (I
2
C) is designed for 2.5-V to 6-V
• Open-Drain Interrupt Output
V
CC
operation.
• Compatible With Most Microcontrollers
The PCF8574A device provides general-purpose
• Latched Outputs With High-Current Drive
remote I/O expansion for most microcontroller
Capability for Directly Driving LEDs
families via the I
2
C interface [serial clock (SCL), serial
• Latch-Up Performance Exceeds 100 mA Per
data (SDA)].
JESD 78, Class II
The device features an 8-bit quasi-bidirectional I/O
port (P0–P7), including latched outputs with high-
2 Applications
current drive capability for directly driving LEDs. Each
quasi-bidirectional I/O can be used as an input or
• Telecom Shelters: Filter Units
output without the use of a data-direction control
• Servers
signal. At power on, the I/Os are high. In this mode,
• Routers (Telecom Switching Equipment)
only a current source to V
CC
is active.
• Personal Computers
Device Information
(1)
• Personal Electronics
PART NUMBER PACKAGE (PIN) BODY SIZE (NOM)
• Industrial Automation
VQFN (20) 4.50 mm × 3.50 mm
• Products with GPIO-Limited Processors
PDIP (16) 19.30 mm × 6.35 mm
PCF8574A SOIC (16) 10.30 mm × 7.50 mm
TSSOP (20) 6.50 mm × 4.40 mm
TVSOP (20) 5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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