ANALOG DEVICES DS1706TESA+ MPU Supervisor, 1.2V-5.5Vsupp., 3.08V threshold/205 ms delay, Active-Low, Push-Pull reset, NSOIC-8

The DS1706TESA+ is a 3.3V MicroMonitor in 8 pin NSOIC package. It monitors three vital conditions for microprocessor such as power supply, software execution and external override. A precision temperature compensated reference & comparator circuit monitor status of VCC at device and at an upstream point for maximum protection. A non maskable interrupt is generated when sense input detects an out of tolerance condition. As voltage at device degrades, an internal power-fail signal forces reset to an active state. The reset signal is kept in active state for minimum of 130ms when VCC returns to in-tolerance condition to allow power supply and processor to stabilize. The second function of DS1706T is pushbutton reset control. It debounces pushbutton input & provides an active reset pulse width of 130ms minimum. The third function is watchdog timer. It has an internal timer that forces WDS output signal to active state if strobe input is not driven low prior to time out.

• Supply voltage range from 1.2V to 5.5V
• Operating temperature range from -40°C to 85°C
• Halts and restarts an out of control microprocessor
• Holds microprocessor in check during power transients
• Automatically restarts microprocessor after power failure
• Monitors pushbutton for external override
• Accurate 5% reset for 3.3V systems and watchdog timeout period of 1.6s
• Pin compatible with Analog Devices MAX706 in 8 pin DIP, 8 pin SOIC and µSOP packages
• VCC trip point of 3.08V and reset active time of 205ms
• Active-low, push-pull reset outputand adjustable reset input

Applications

System Monitoring

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party