TEXAS INSTRUMENTS  PCF8574N  I/O Expander, 8bit, 100 kHz, I2C, 2.5 V, 6 V, DIP


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Product Overview

The PCF8574N is a 8-bit input/output (I/O) Expander for the two-line bidirectional bus (I²C) is designed for 2.5 to 6V VCC operation. This 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.
  • Low Standby-current Consumption of 10µA Maximum
  • 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 100mA Per JESD 78, Class II


Communications & Networking; Computers & Computer Peripherals; Consumer Electronics; Industrial; Automation & Process Control; Signal Processing
Device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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Product Information

  • Chip Configuration 8bit
  • Bus Frequency 100kHz
  • IC Interface Type I2C
  • Supply Voltage Min 2.5V
  • Supply Voltage Max 6V
  • Interface Case Style DIP
  • No. of Pins 16Pins
  • No. of I/O's 8I/O's
  • Packaging Each
  • MSL -
  • Supply Voltage Range 2.5V to 6V
  • SVHC No SVHC (15-Jun-2015)

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