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

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Parametrics Compare all products in I2C IO Expander

 
Voltage Nodes (V)
Approx. Price (US$)
Pin/Package
Operating Temperature Range (C)
Max Frequency (kHz)
I2C Address
# of I/Os
Rating
Special Features
PCF8575
5.5
3.6
2.7
2.5    
1.06 | 1ku    
24SOIC
24SSOP
24TSSOP
24TVSOP
24VQFN    
-40 to 85    
400    
0100 xxx    
16    
Catalog    
Interrupt Output
Push-Pull I/O Type    

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