Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I2C-bus
PCF8574
CONTENTS
1
2
3
4
5
6
FEATURES
GENERAL DESCRIPTION
ORDERING INFORMATION
BLOCK DIAGRAM
PINNING
CHARACTERISTICS OF THE I2C-BUS
6.1
6.2
6.3
6.4
Bit transfer
Start and stop conditions
System configuration
Acknowledge
7
FUNCTIONAL DESCRIPTION
7.1
7.2
7.3
Addressing
Interrupt
Quasi-bidirectional I/Os
8
LIMITING VALUES
9
HANDLING
10
11
12
13
DC CHARACTERISTICS
I2C-BUS TIMING CHARACTERISTICS
PACKAGE OUTLINES
SOLDERING
13.1
Introduction
13.2
DIP
13.2.1
13.2.2
13.3
Soldering by dipping or by wave
Repairing soldered joints
SO and SSOP
13.3.1
13.3.2
13.3.3
Reflow soldering
Wave soldering
Repairing soldered joints
14
15
16
DEFINITIONS
LIFE SUPPORT APPLICATIONS
PURCHASE OF PHILIPS I2C COMPONENTS
1997 Apr 02
2
NXP [ NXP ]
