EEWORLDEEWORLDEEWORLD

Part Number

Search

PCF8574AP

Description
Number of I/Os: 8 Features: POR Interface: I²C Clock frequency: 100kHz
CategoryAnalog mixed-signal IC    I/O interface - expander   
File Size941KB,13 Pages
ManufacturerGuangdong Huaguan Semiconductor Co., Ltd.
Websitehttp://www.hgsemi.net/
Guangdong Huaguan Semiconductor Co., Ltd. was established in 2011. It is a quasi-high-tech enterprise specializing in the research and development, packaging, testing and sales of semiconductor devices. The company has an internationally advanced level of semiconductor discrete devices and integrated circuit packaging and testing production lines, and a technical team with rich experience in the design, packaging and testing of semiconductor devices. It has established long-term strategic cooperative relations with first-class companies in the same industry, and has formed a professional technical development team to engage in the development of new products and new technologies. The company's R&D project products include power management, operational amplifiers, audio amplifiers, interfaces and drivers, logic devices, memory, time base and clock, data acquisition, MOSFT and special circuits, which are mainly used in automotive electronics, instrumentation, network communications, industrial automation, LED lighting, switching power supplies, smart home appliances, gold card projects, smart transportation and other fields. Huaguan products are positioned as high-end quality, and have been well received by users in recent years. It is currently a high-end quality brand in the industry; HGSEMI&HGC is Huaguan's own brand. The establishment of an independent brand is more conducive to our service to customers, promoting the development of the company, and becoming a leading manufacturer in China's semiconductor industry.
Download Datasheet Parametric View All

PCF8574AP Overview

Number of I/Os: 8 Features: POR Interface: I²C Clock frequency: 100kHz

PCF8574AP Parametric

Parameter NameAttribute value
Installation typeThrough hole
Operating Voltage2.5V ~ 6V
Number of I/Os8
characteristicPOR
interfaceI²C
Interrupt outputyes
Clock frequency100kHz
Output typepush-pull
Sink/source current output300uA, 25mA
Operating temperature-40℃ ~ +85℃

PCF8574AP Preview

Download Datasheet
PCF8574
Remote 8-bit I/O expander for I
2
C-bus
FEATURES
Operating supply voltage 2.5 to 6 V
Low standby current consumption of 10
µA
maximum
I
2
C to parallel port expander
Open-drain interrupt output
8-bit remote I/O port for the I
2
C-bus
Compatible with most microcontrollers
Latched outputs with high current drive capability for
directly driving LEDs
Address by 3 hardware address pins for use of up to
8 devices (up to 16 with PCF8574A)
DIP16, or space-saving SO16 or SSOP20 packages.
GENERAL DESCRIPTION
The PCF8574 is a silicon CMOS circuit. It provides general
purpose remote I/O expansion for most microcontroller
families via the two-line bidirectional bus (I
2
C).
The device consists of an 8-bit quasi-bidirectional port and
an I
2
C-bus interface. The PCF8574 has a low current
consumption and includes latched outputs with high
current drive capability for directly driving LEDs. It also
possesses an interrupt line (INT) which 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. This means that
the PCF8574 can remain a simple slave device.
The PCF8574 and PCF8574A versions differ only in their
slave address as shown in Fig.9.
BLOCK DIAGRAM
handbook, full pagewidth
INT
A0
A1
A2
SCL
SDA
13
1
2
3
14
15
INPUT
FILTER
INTERRUPT
LOGIC
LP FILTER
PCF8574
4
5
6
I
2
C BUS
CONTROL
7
SHIFT
REGISTER
8 BIT
I/O
PORT
9
10
11
12
P0
P1
P2
P3
P4
P5
P6
P7
WRITE pulse
VDD
V SS
16
8
POWER-ON
RESET
READ pulse
Fig.1 Block diagram (SOT38-1 and SOT162-1).
http://www.hgsemi.com.cn
1
2018 AUG
Some unused boards
[i=s]This post was last edited by y909334873 on 2019-2-19 14:41[/i] I cleaned up the house today and packed some unused boards and put them on Xianyu. It's my first time using Xianyu and I don't have ...
y909334873 Buy&Sell
【2022 Digi-Key Innovation Design Competition-Smart Study Room Based on Raspberry Pi
Smart Study Room Based on Raspberry PiAuthor: EEWorld-eew_deadlock 1. Introduction of the workThe idea of this work originated from the selection and management of multiple study rooms. This work is b...
eew_deadlock DigiKey Technology Zone
【NXP Rapid IoT Review】+ Trial Computer Programming & Mobile Phone Control
[i=s]This post was last edited by damiaa on 2018-12-30 16:51[/i] [b]【NXP Rapid IoT Review】+Start Trial[/b] [b]I finally received the RAPID IOT board last night, it’s great! [/b]Small, but said to be p...
damiaa RF/Wirelessly
TMS320C6747 Fixed-point/Floating-point Digital Signal Processor
[i=s]This post was last edited by Jacktang on 2020-5-4 08:35[/i]Data SheetTMS320C6745, TMS320C6747 Fixed- and Floating-Point Digital Signal Processor 数据表(英文內容)| Online data sheetErrataTMS320C6747 Fixe...
Jacktang DSP and ARM Processors
Chip Manufacturing 7-Chip Manufacturing
...
ylyfxzsx Download Centre
FPGA water lamp design vhdl source program
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned .all; entity liushuideng is port(clk:in std_logic; led:out std_logic_vector(7 downto 0)); end entity; architecture bhv of liushui...
fish001 DSP and ARM Processors

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

About Us Customer Service Contact Information Datasheet Sitemap LatestNews

Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190

Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号