PCF8574PW

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PCF8574PW

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

Packaging

Package | PIN: PW | 20
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $1.59
10-24 $1.42
25-99 $1.32
100-249 $1.15
250-499 $1.06
500-749 $0.89
750-999 $0.73
1000+ $0.67

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

Texas Instruments  PCF8574PW

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.