Maxim Integrated

MAX809SEUR+T

Supervisors

Manufacturer
MPN
MAX809SEUR+T
Product Type
Package / Case
SOT-23
Key Attributes
3-Pin Microprocessor Reset Circuits

Technical Specifications

TypeDescription
Operating Temp-40°C ~ +105°C @(TA)
Working Voltage V3.35 V
Reset Timeout140ms
output typePush-pull
Reset Active LevelActive Low
TypeDescription
standby current12uA
ChiptypeVoltage monitor
Threshold Voltage2.93V
Number of Voltages Monitored1
Package / CaseSOT-23

Product Introduction

The MAX803/MAX809/MAX810 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V, or +2.5V powered circuits.

These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available.

The MAX803 has an open-drain output stage, while the MAX809/MAX810 have push-pull outputs. The MAX803’s open-drain RESET output requires a pullup resistor that can be connected to a voltage higher than VCC. The MAX803/MAX809 have an active-low RESET output, while the MAX810 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V.

Low supply current makes the MAX803/MAX809/ MAX810 ideal for use in portable equipment. The MAX803 is available in a 3-pin SC70 package, and the MAX809/MAX810 are available in 3-pin SC70 or SOT23 packages.

Features

  • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power-Supply Voltages
  • Fully Specified Over Temperature
  • Available in Three Output Configurations: Open-Drain RESET Output (MAX803), Push-Pull RESET Output (MAX809), Push-Pull RESET Output (MAX810)
  • 140ms min Power-On Reset Pulse Width
  • 12µA Supply Current
  • Guaranteed Reset Valid to VCC = +1V
  • Power Supply Transient Immunity
  • No External Components
  • 3-Pin SC70 and SOT23 Packages

Applications

  • - Computers - Controllers - Intelligent Instruments - Critical uP and uC Power Monitoring - Portable/Battery-Powered Equipment - Automotive

Datasheet

📄 Open Download

Alternative Parts

Common MAX809SEUR+T alternatives overseas buyers search for:

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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