ADM706 Datasheet

• Guaranteed RESET valid with V_CC = 1 V
• 190 μA quiescent current
• Precision supply voltage monitor
  • 4.40 V (ADM706/ADM708)
• 200 ms reset pulse width
• Debounced TTL/CMOS manual reset input (MR)
• Independent watchdog timer (ADM705/ADM706)
• 1.60 sec timeout (ADM705/ADM706)
• Voltage monitor for power fail or low battery warning
• Superior upgrade for MAX705 to MAX708

• Microprocessor systems
• Computers
• Controllers
• Intelligent instruments
• Critical microprocessor supply monitoring

The ADM706 microprocessor supervisory circuits are suitable for monitoring 5 V power supplies/batteries and microprocessor activity.

The ADM706 provide power-supply monitoring circuitry that generate a reset output during power-up, powerdown, and brownout conditions. The reset output remains operational with V_CC as low as 1 V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.60 sec.

In addition, there is a 1.25 V threshold detector to warn of power failures, to detect low battery conditions, or to monitor an additional power supply. An active low, debounced manual reset input (MR) is also included.

The ADM706 are identical except for the reset threshold monitor levels, which are 4.65 V and 4.40 V, respectively.

The ADM706 are available in narrow 8-lead PDIP and 8-lead SOIC packages.