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HT8574 - Remote 8-bit I/O expander

General Description

The HT8574B is a silicon CMOS circuit.

It provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus).

Key Features

  • Operating supply voltage 2.5 to 6 V.
  • Low standby current consumption of 10 A maximum.
  • I2C-bus to parallel port expander.
  • Open-drain interrupt output.
  • 8-bit remote I/O port for the I2C-bus.
  • Compatible with most microcontrollers.
  • Latched outputs with high current drive capability for directly driving LEDs.
  • Address by 3 hardware address pins for use of up to 8 devices (up to 16 with HT8574A).
  • DIP16, or space-saving SO16 or SSOP20 packages. The device.

📥 Download Datasheet

Datasheet Details

Part number HT8574
Manufacturer HTCSEMI
File Size 546.00 KB
Description Remote 8-bit I/O expander
Datasheet download datasheet HT8574 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HT8574 Remote 8-bit I/O expander for I2C-bus 1 FEATURES  Operating supply voltage 2.5 to 6 V  Low standby current consumption of 10 A maximum  I2C-bus to parallel port expander  Open-drain interrupt output  8-bit remote I/O port for the I2C-bus  Compatible with most microcontrollers  Latched outputs with high current drive capability for directly driving LEDs  Address by 3 hardware address pins for use of up to 8 devices (up to 16 with HT8574A)  DIP16, or space-saving SO16 or SSOP20 packages. The device consists of an 8-bit quasi-bidirectional port and an I2C-bus interface. The HT8574B has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.