MAX809J, MAX809L, MAX809M, MAX809R, MAX809S, MAX809T, MAX809Z:3-Pin Microprocessor Reset Circuits

Industry's-First 3-Pin SC70 Reset ICs

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 active-low 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.

Key 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 Active-Low RESET Output (MAX803)
    • Push-Pull Active-Low 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
MAX803L, MAX803M, MAX803R, MAX803S, MAX803T, MAX803Z, MAX809, MAX809J, MAX809L, MAX809M, MAX809R, MAX809S, MAX809T, MAX809Z, MAX810, MAX810L, MAX810M, MAX810R, MAX810S, MAX810T, MAX810Z: Typical Operating Circuit
MAX803L, MAX803M, MAX803R, MAX803S, MAX803T, MAX803Z, MAX809, MAX809J, MAX809L, MAX809M, MAX809R, MAX809S, MAX809T, MAX809Z, MAX810, MAX810L, MAX810M, MAX810R, MAX810S, MAX810T, MAX810Z: Typical Operating Circuit
Applications/Uses
  • Automotive
  • Computers: Desktop, Workstation, Server
  • Controllers
  • Critical µP and µC Power Monitoring
  • Intelligent Instruments
  • Portable Battery-Powered Equipment
DataSheet
titleDownload file
MAX803-MAX810Z Data SheetMAX803-MAX810Z.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX8031.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
85ms to 300msNo Watchdog1.560SC-70/3$1.18 @1k
MAX809Active Low
Push-Pull
SC-70/3
SOT/3
$1.60 @1k
MAX810Active High
Push-Pull
SC-70/3
SOT/3
$1.56 @1k
Quality and Environmental Data
Related Products
  • MAX6333:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6332:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6334:3-Pin, Ultra-Low-Voltage, Low-Power µP Reset Circuits
  • MAX6335:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6336:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6337:4-Pin, Ultra Low-Voltage, Low-Power µP Reset Circuits with Manual Reset
  • MAX6327:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6328:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
  • MAX6326:3-Pin, Ultra-Low-Power SC70/SOT µP Reset Circuits
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX809JEUR+ActiveSOT,;3 pin;8 mm²-40°C to +105°CLead Free
MAX809JEUR+TActiveSOT,;3 pin;8 mm²-40°C to +105°CLead Free
MAX809JEUR+T10ActiveSOT,;3 pin;8 mm²-40°C to +105°CLead Free
MAX809JEUR-TNo Longer AvailableMAX809JEUR+TSOT,;3 pin;8 mm²-40°C to +105°CNo
MAX809JEUR-T10No Longer AvailableMAX809JEUR+T10SOT,;3 pin;8 mm²-40°C to +105°CNo
MAX803-MAX810Z.pdf MAX810
MAX809R.pdf MAX809
MAX809J.pdf MAX809
MAX809T.pdf MAX809
MAX809S.pdf MAX809
MAX809Z.pdf MAX809
MAX809L.pdf MAX809