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Manufacturer Part #


MAX809 Series 4.63 V 140 ms 3-Pin Microprocessor Reset Monitor - SOT-23-3

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 1926
Product Specification Section
Technical Attributes
Attributes Table
No of Outputs: Single
Threshold Voltage: 4.63|V
Supply Voltage-Max: 5.5V
Reset Timeout: 140ms
Package Style:  SOT-23 (SC-59,TO-236)
Mounting Method: Surface Mount
Features & Applications
The MAX809 and MAX810 are cost−effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.

The reset output is driven active within 10 µsec of VCC falling through the reset voltage threshold. Reset is maintained active for a timeout period which is trimmed by the factory after VCC rises above the reset threshold. The MAX810 has an active−high RESET output while the MAX809 has an active−low RESET output. Both devices are available in SOT−23 and SC−70 packages. The MAX809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 0.5 µA (VCC = 3.2 V) makes these devices suitable for battery powered applications.

Key Features:

  • NCV Version for Automotive
  • Precision VCC Monitor for 1.5 V, 1.8V, 2.5 V, 3.0 V, 3.3 V and 5.0 V supplies
  • Precision Monitoring Voltages from 1.2 V to 4.9 V Available in 100 mV Steps
  • Four Guaranteed Minimum RESET Output Duration (1ms, 20ms, 100ms and 140ms)
  • RESET Output Guaranteed to VCC = 1.0 V
  • Low 1.0 µA Supply Current
  • VCC Transient Immunity
  • Small SOT-23 and SC-70 Package
  • VCC Transient Immunity
  • No External Components
  • Wide Operating Temperature: −40°C to 105°C
  • AEC-Q100 Qualified
  • Pb−Free Packages are Available


  • Computers
  • Embedded Systems
  • Battery Powered Equipment
  • Critical Microprocessor Power Supply Monitoring
  • Body Electronic
  • Braking
  • Infotainment
  • Instrument Cluster
  • Navigator
  • Occupant Comfort
  • Occupant Protection
  • Powertrain
Pricing Section
Global Stock:
Germany (Online Only):
Factory Stock:Factory Stock:
Factory Lead Time:
51 Weeks
Minimum Order:
Multiple Of:
Web Price
Product Variant Information section