PCF8575 - Texas Instruments

PCF8575 Remote16-BIT I2C AND SMBus I/O Expander

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–P0.

Features

•1 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 2 Applications
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