SCPS068J July   2001  – March 2015 PCF8574

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 I2C Interface Timing Requirements
    7. 6.7 Switching Characteristics
    8. 6.8 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
      1. 8.2.1 Simplified Block Diagram of Device
      2. 8.2.2 Simplified Schematic Diagram of Each P-Port Input/Output
    3. 8.3 Feature Description
      1. 8.3.1 I2C Interface
      2. 8.3.2 Interface Definition
      3. 8.3.3 Address Reference
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Minimizing ICC When I/Os Control LEDs
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
    1. 10.1 Power-On Reset Requirements
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）
サーマルパッド・メカニカル・データ
発注情報

5 Pin Configuration and Functions

PCF8574 po2_cps068.gif
PCF8574 po4_cps068.gif
PCF8574 po3_cps068.gif
PCF8574 po1_cps068.gif

Pin Functions

PIN TYPE DESCRIPTION
NAME RGT RGY DGV or PW DW or N
A [0..2] 2, 3, 4 6, 7, 9 6, 7, 9 1, 2, 3 I Address inputs 0 through 2. Connect directly to VCC or ground. Pullup resistors are not needed.
GND 9 15 15 8 — Ground
INT 14 1 1 13 O Interrupt output. Connect to VCC through a pullup resistor.
NC - 3, 8, 13, 18 3, 8, 13, 18 - — Do not connect
P[0..7] 5, 6, 7, 8, 10, 11, 12, 13 10, 11, 12, 14, 16, 17, 19, 20 10, 11, 12, 14, 16, 17, 19, 20 4, 5, 6, 7, 9, 10, 11, 12 I/O P-port input/output. Push-pull design structure.
SCL 15 2 2 14 I Serial clock line. Connect to VCC through a pullup resistor
SDA 16 4 4 15 I/O Serial data line. Connect to VCC through a pullup resistor.
VCC 1 5 5 16 — Voltage supply