ADM812 Series

Microprocessors Supervisory Circuit in 4-Lead SOT-143, Logic High RESET Output

Catalog

Microprocessors Supervisory Circuit in 4-Lead SOT-143, Logic High RESET Output

Part	Output	Number of Voltages Monitored	Supplier Device Package	Type	Voltage - Threshold	Package / Case	Reset Timeout [Min]	Reset	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices ADM812ZART-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.32 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812MART-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset		TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812LART-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	4.63 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812RARTZ-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.63 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812SARTZ-REEL	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.93 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812ZARTZ-REEL	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.32 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812TART-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	3.08 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812RARTZ-REEL	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.63 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812SARTZ-REEL7	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	2.93 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C
Analog Devices ADM812TARTZ-REEL	Push-Pull Totem Pole	1	SOT-143-4	Simple Reset/Power-On Reset	3.08 V	TO-253-4 TO-253AA	140 ms	Active High	Surface Mount	85 °C	-40 °C

Catalog

Microprocessors Supervisory Circuit in 4-Lead SOT-143, Logic High RESET Output

Key Features

• Superior upgrade for MAX811/MAX812

• Specified over temperature

• Low power consumption: 5 μA typical

• Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options

• Reset assertion down to 1 VCC

• Power-on reset: 140 ms minimum

• Logic high RESET output

• Built-in manual reset

Description

TheADM811/ADM812 are reliable voltage monitoring devices suitable for use in most voltage monitoring applications. The ADM811/ADM812 are designed to monitor six different voltages, each allowing a 5% or 10% degradation of standard PSU voltages before a reset occurs. These voltages have been selected for the effective monitoring of 2.5 V, 3 V, 3.3 V, and 5 V supply voltage levels.Included in this circuit is a debounced manual reset input. Reset can be activated using an electrical switch (or an input from another digital device) or by a degradation of the supply voltage. The manual reset function is very useful, especially if the circuit in which the ADM811/ADM812 are operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system.ApplicationsMicroprocessor systemsControllersIntelligent instrumentsAutomotive systemsSafety systemsPortable instruments