MAX690 Series
3.0V/3.3V Microprocessor Supervisory Circuits
Manufacturer: Analog Devices Inc./Maxim Integrated
Catalog
3.0V/3.3V Microprocessor Supervisory Circuits
| Part | Type | Reset Timeout [Min] | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Supplier Device Package | Number of Voltages Monitored | Mounting Type | Voltage - Threshold | Output | Reset | Package / Case | Package / Case | Reset Timeout |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 85 C | -40 ¯C | 8-DIP (0.300" 7.62mm) | 8-PDIP | 1 | Through Hole | 2.925 V | Push-Pull Totem Pole | Active Low | |||
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-DIP (0.300" 7.62mm) | 8-PDIP | 1 | Through Hole | 2.625 V | Push-Pull Totem Pole | Active Low | |||
 Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 85 C | -40 ¯C | 8-SOIC | 8-SOIC | 1 | Surface Mount | Push-Pull Totem Pole | Active Low | 0.154 in | 3.9 mm | ||
 Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 70 °C | 0 °C | 8-DIP (0.300" 7.62mm) | 8-PDIP | 1 | Through Hole | 3.075 V | Push-Pull Totem Pole | Active Low | 35 ms | |||
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-SOIC | 8-SOIC | 1 | Surface Mount | Push-Pull Totem Pole | Active Low | 0.154 in | 3.9 mm | ||
 Analog Devices Inc./Maxim Integrated | ||||||||||||||
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-SOIC | 8-SOIC | 1 | Surface Mount | 2.925 V | Push-Pull Totem Pole | Active Low | 0.154 in | 3.9 mm | |
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-SOIC | 8-SOIC | 1 | Surface Mount | Push-Pull Totem Pole | Active Low | 0.154 in | 3.9 mm | ||
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-DIP (0.300" 7.62mm) | 8-PDIP | 1 | Through Hole | Push-Pull Totem Pole | Active Low | ||||
Analog Devices Inc./Maxim Integrated | Battery Backup Circuit | 140 ms | 70 °C | 0 °C | 8-DIP (0.300" 7.62mm) | 8-PDIP | 1 | Through Hole | Push-Pull Totem Pole | Active Low |
Description
AI
The MAX690A/MAX692A/MAX802L/MAX802M/MAX805L reduce the complexity and number of components required for power-supply monitoring and battery-control functions in microprocessor (µP) systems. They significantly improve system reliability and accuracy compared to separate ICs or discrete components.These parts provide four functions:1) A reset output during power-up, power-down, and brownout conditions.2) Battery-backup switching for CMOS RAM, CMOS µP, or other low-power logic.3) A reset pulse if the optional watchdog timer has not been toggled within 1.6sec.4) A 1.25V threshold detector for power-fail warning or low-battery detection, or to monitor a power supply other than +5V.The parts differ in their reset-voltage threshold levels and reset outputs. The MAX690A/MAX802L/MAX805L generate a reset pulse when the supply voltage drops below 4.65V, and the MAX692A/MAX802M generate a reset below 4.40V. The MAX802L/MAX802M guarantee power-fail accuracies to ±2%. The MAX805L is the same as the MAX690A except that RESET is provided instead of active-low RESET.All parts are available in 8-pin DIP and SO packages. The MAX690A/MAX802L are pin compatible with the MAX690 and MAX694. The MAX692A/MAX802M are pin compatible with the MAX692.ApplicationsBattery-Powered Computers/ControllersCritical µP MonitoringIntelligent Instruments