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SP810 - 3 Pin Microprocessor Supervisor Circuit

Download the SP810 datasheet PDF. This datasheet also covers the SP809 variant, as both devices belong to the same 3 pin microprocessor supervisor circuit family and are provided as variant models within a single manufacturer datasheet.

General Description

The SP809/SP810 are low power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems.

They provide applications with benefits of circuit reliability and low cost by eliminating external 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 SP810 Output Type Open Drain Active Low Push-Pull Low Push-Pull Active High.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SP809-Exar.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
SP810 3 Pin Microprocessor Supervisor Circuit Maxlinear
SP810 (SP809 / SP810) 3 Pin Microprocessor Supervisor Circuit Sipex Corporation
SP8100S 8.0AMP Schottky Barrier Rectifiers SeCoS
SP8100S Schottky Barrier Rectifiers Eris
SP8107 Three Channel High Performance Laser Driver Sipex

Other Datasheets by Exar (now MaxLinear)

Part Number Description
SP813L Low Power Microprocessor Supervisory Circuits
SP809 3 Pin Microprocessor Supervisor Circuit

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.

View original datasheet text
February 2011 SP809 / SP810 3 Pin Microprocessor Supervisor Circuit Rev. 2.0.0 GENERAL DESCRIPTION The SP809/SP810 are low power microprocessor (μP) supervisory circuits used to monitor power supplies in μP and digital systems. They provide applications with benefits of circuit reliability and low cost by eliminating external 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. Both the SP809 and SP810 were designed with a reset comparator to help identify invalid signals, which last less than 140ms. The only difference between them is that they have an active-low RESET output and active-high RESET output, respectively.