ADM6326 Series

Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Push-Pull Output, 0.5µA Supply Current

Catalog

Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Push-Pull Output, 0.5µA Supply Current

Part	Voltage - Threshold	Package / Case	Number of Voltages Monitored	Type	Supplier Device Package	Mounting Type	Reset Timeout	Output	Reset	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices ADM6326-29ARTZ-R7	2.93 V	SC-59 SOT-23-3 TO-236-3	1	Simple Reset/Power-On Reset	SOT-23-3	Surface Mount	100 ms	Push-Pull Totem Pole	Active Low	85 °C	-40 °C
Analog Devices ADM6326-26ARTZ-R7	2.63 V	SC-59 SOT-23-3 TO-236-3	1	Simple Reset/Power-On Reset	SOT-23-3	Surface Mount	100 ms	Push-Pull Totem Pole	Active Low	85 °C	-40 °C
Analog Devices ADM6326-24ARTZ-R7	2.4 V	SC-59 SOT-23-3 TO-236-3	1	Simple Reset/Power-On Reset	SOT-23-3	Surface Mount	100 ms	Push-Pull Totem Pole	Active Low	85 °C	-40 °C
Analog Devices ADM6326-22ARTZ-R7	2.2 V	SC-59 SOT-23-3 TO-236-3	1	Simple Reset/Power-On Reset	SOT-23-3	Surface Mount	100 ms	Push-Pull Totem Pole	Active Low	85 °C	-40 °C

Catalog

Ultralow Power, 3-Lead, SOT-23, Microprocessor Reset Circuit, Active-Low Push-Pull Output, 0.5µA Supply Current

Key Features

• Ultralow supply current of 1 μA maximum (ADM6326/ADM6328)

• Accurate monitoring of 2.5 V, 3 V, 3.3 V, and 5 V rails

• Reset thresholds available in increments from 2.2 V to 4.63 V

• Glitch immunity from negative-going VCCtransients

• 2 reset output optionsPush-pullRESET(ADM6326/ADM6346)Open-drainRESET(ADM6328/ADM6348)

• Push-pullRESET(ADM6326/ADM6346)

• Open-drainRESET(ADM6328/ADM6348)

• Minimum reset timeout of 100 ms

• Operating temperature range of −40°C to +85°C

• 3-lead SOT-23 package

Description

The ADM6326/ADM6328/ADM6346/ADM6348devices provide low cost solutions for protecting sensitive circuitry, such as micro-processor and telecommunications circuitry.With built-in glitch immunity, ultralow supply currents, and 24 reset threshold voltage options, the ADM6326/ADM6328/ADM6346/ADM6348 not only ensure that systems are immune to fast transients on VCC, but also that the devices are suitable for monitoring a variety of supply voltages in low power, portable equipment.These devices provide a reset output during power-up, power-down, and brownout conditions. On power-up, an internal timer holdsRESETasserted for at least 100 ms. This holds the microprocessor in a reset state until conditions have stabilized. The reset output remains operational with VCCas low as 1 V.The ADM6326 and ADM6346 have an active low push-pull reset output. The ADM6328 and ADM6348 have an active low open-drain reset output, which requires an external pull-up resistor. The ADM6326 and ADM6328 offer a choice of ten reset thresholds in increments between 2.2 V and 3.08 V, whereas the ADM6346 and ADM6348 offer a choice of 14 reset thresholds between 3.3 V and 4.63 V. Not all options are released for sale as standard models. See the Ordering Guide for details.These devices are available in a 3-lead SOT-23 package and operate over the extended temperature range of −40°C to +85°C.ApplicationsTelecommunicationsMicroprocessor systemsDesktop and notebook computersPortable equipment