PCF8574 (ACTIVE)

Remote 8-Bit I/O Expander for I2C-Bus

Remote 8-Bit I/O Expander for I2C-Bus - PCF8574
 

Description

This 8-bit input/output (I/O) expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 6-V VCC operation.

The PCF8574 device provides general-purpose remote I/O expansion for most microcontroller families by way of the I2C 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 VCC is active.

Features

  • Low Standby-Current Consumption of 10 µA Max
  • I2C to Parallel-Port Expander
  • Open-Drain Interrupt Output
  • Compatible With Most Microcontrollers
  • Latched Outputs With High-Current Drive
    Capability for Directly Driving LEDs
  • Latch-Up Performance Exceeds 100 mA
    Per JESD 78, Class II

View more

Parametrics Compare all products in I2C General Purpose I/O (GPIO)

 
Voltage Nodes (V)
fSCLK (Max) (MHz)
VCC (Min) (V)
Max Frequency (kHz)
VCC (Max) (V)
I2C Address
Number of I/Os
Rating
Operating Temperature Range (C)
Package Group
Pin/Package
PCF8574 PCF8575
5
3.3   
5.5
3.6
2.7
2.5   
0.1    0.4   
2.5    2.5   
100    400   
6    5.5   
0100 xxx    0100 xxx   
8    16   
Catalog    Catalog   
-40 to 85    -40 to 85   
PDIP
SOIC
TSSOP
TVSOP
TVSOP
VQFN
VQFN   
SOIC
SSOP
SSOP
TSSOP
TVSOP
VQFN   
16PDIP
16SOIC
16TVSOP
16VQFN
20TSSOP
20TVSOP
20VQFN   
24SOIC
24SSOP
24SSOP
24TSSOP
24TVSOP
24VQFN   

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