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SP809 - 3 Pin Microprocessor Supervisor Circuit

General Description

The SP809 is a low power mic roproc essor (μP) supervisory circuit used to monitor power supplies in μP and digital systems.

It provides applications with benefits of circuit reliability and low cost by eliminating ext ernal components.

Key Features

  • Ultra Low Supply Current 1µA (typ).
  • Guaranteed Reset valid to VCC = 0.9V.
  • 140ms Power-On Reset Pulse Width.
  • Internally Fixed Threshold 2.3V, 2.6V, 2.9V, 3.1V, 4.4V, 4.6V.
  • 1.5% Voltage Threshold Tolerance.
  • 3 Pin SOT-23 Package Part Number SP809N SP809 Output Type Open Drain Active Low Push-Pull Low.

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Datasheet Details

Part number SP809
Manufacturer MaxLinear
File Size 735.42 KB
Description 3 Pin Microprocessor Supervisor Circuit
Datasheet download datasheet SP809 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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July 14, 2021 GENERAL DESCRIPTION The SP809 is a low power mic roproc essor (μP) supervisory circuit used to monitor power supplies in μP and digital systems. It provides applications with benefits of circuit reliability and low cost by eliminating ext ernal components. If the VCC supply voltage falls below preset threshold then a reset signal is asserted for at least 140ms after VCC has risen above the reset threshold. The SP809 was designed with a reset comparator to help identify invalid signals, which last less than 140ms. Low supply current (1μA) makes SP809 ideal for port able equipment. The SP809 is available in a 3 pin SOT-23 pac kage. SP809 3 Pin Microprocessor Supervisor Circuit R e v. 2.0.