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ft809 - 3-Pin Microprocessor Reset Circuits

General Description

The ft809 series are power supply supervisory circuits used to monitor the power supplies in microprocessors and digital systems.

The ft809 series provide a reset to the microprocessors during system power-up, power-down and brown-out conditions.

Key Features

  • Precision monitoring of 2.63V/ 2.70V/ 2.93V/ 3.08V.
  • Fully specified over temperatures.
  • 140ms (minimum) power-on-reset pulse width.
  • 10µA low supply current.
  • Power supply transi.

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Datasheet Details

Part number ft809
Manufacturer Fangtek
File Size 324.62 KB
Description 3-Pin Microprocessor Reset Circuits
Datasheet download datasheet ft809 Datasheet

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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ft809 3-Pin Microprocessor Reset Circuits GENERAL DESCRIPTION The ft809 series are power supply supervisory circuits used to monitor the power supplies in microprocessors and digital systems. The ft809 series provide a reset to the microprocessors during system power-up, power-down and brown-out conditions. The ft809 is designed to monitor the VCC supply voltage and asserts a reset signal whenever the supply voltage declines below the preset threshold. The reset signal remains asserted for at least 140ms after VCC has risen above the threshold. The ft809 provides an active-low reset output. The ft809 series are optimized to reject fast transients on the VCC. Low supply current of 10µA makes the ft809 ideal for use in portable devices. The ft809 series are available in SOT23-3 package.