Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output - PCF8575

PCF8575 (ACTIVE)

Remote 16-Bit I2C and SMBus I/O Expander with Interrupt Output

 

Description

This 16-bit I/O expander for the two-line bidirectional bus (I2C) is designed for 2.5-V to 5.5-V VCC operation.

The PCF8575 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 a 16-bit quasi-bidirectional input/output (I/O) port (P07–P00, P17–P10), 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

  • I2C to Parallel-Port Expander
  • Open-Drain Interrupt Output
  • Low Standby-Current Consumption of 10 µA Max
  • Compatible With Most Microcontrollers
  • 400-kHz Fast I2C Bus
  • Address by Three Hardware Address Pins for Use
    of up to Eight Devices
  • Latched Outputs With High-Current Drive
    Capability for Directly Driving LEDs
  • Current Source to VCC for Actively Driving a High
    at the Output
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model
    • 200-V Machine Model
    • 1000-V Charged-Device Model

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
PCF8575
5.5
3.6
2.7
2.5   
0.4   
2.5   
400   
5.5   
0100 xxx   
16   
Catalog   
-40 to 85   
SOIC
SSOP
TVSOP
TSSOP
VQFN   
24SOIC
24SSOP
24TSSOP
24VQFN
24TVSOP