Datasheet 搜索 > 接口芯片 > TI（德州仪器） > PCF8574ADW 数据手册 > PCF8574ADW 其他数据使用手册 1/22 页
器件3D模型￥ 0.705
PCF8574ADW 其他数据使用手册 - 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 PCF8574ADW. 芯片, 8位I/O扩展器, 用于I?C总线
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
导航目录
PCF8574ADW数据手册
Page:
of 22 Go
若手册格式错乱，请下载阅览PDF原文件
www.ti.com
FEATURES
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
A1
A2
P0
P1
P2
P3
GND
V
CC
SDA
SCL
INT
P7
P6
P5
P4
DW OR N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
INT
SCL
NC
SDA
V
CC
A0
A1
NC
A2
P0
P7
P6
NC
P5
P4
GND
P3
NC
P2
P1
DGV OR PW PACKAGE
(TOP VIEW)
NC − No internal connection
RGY PACKAGE
(TOP VIEW)
1 20
10 11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
P6
NC
P5
P4
GND
P3
NC
P2
SCL
NC
SDA
V
CC
A0
A1
NC
A2
INT
P1
P7
P0
NC − No internal connection
DESCRIPTION/ORDERING INFORMATION
PCF8574A
REMOTE 8-BIT I/O EXPANDER FOR I
2
C BUS
SCPS069D – JULY 2001 – REVISED OCTOBER 2005
• Low Standby-Current Consumption of • Compatible With Most Microcontrollers
10 µ A Max
• Latched Outputs With High-Current Drive
• I
2
C to Parallel-Port Expander Capability for Directly Driving LEDs
• Open-Drain Interrupt Output • Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I
2
C) is designed for 2.5-V to 6-V V
CC
operation.
The PCF8574A provides general-purpose remote I/O expansion for most microcontroller families via the I
2
C
interface [serial clock (SCL), serial data (SDA)].
The device features an 8-bit quasi-bidirectional I/O port (P0–P7), including latched outputs with high-current drive
capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or output without the use
of a data-direction control signal. At power on, the I/Os are high. In this mode, only a current source to V
CC
is
active. An additional strong pullup to V
CC
allows fast rising edges into heavily loaded outputs. This device turns
on when an output is written high and is switched off by the negative edge of SCL. The I/Os should be high
before being used as inputs.
ORDERING INFORMATION
T
A
PACKAGE
(1)
ORDERABLE PART NUMBER TOP-SIDE MARKING
QFN – RGY Tape and reel PCF8574ARGYR PF574A
PDIP – N Tube PCF8574AN PCF8574AN
Tube PCF8574ADW
–40 ° C to 85 ° C SOIC – DW PCF8574A
Tape and reel PCF8574ADWR
TSSOP – PW Tape and reel PCF8574APWR PF574A
TVSOP – DGV Tape and reel PCF8574ADGVR PF574A
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2001–2005, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
