MAX6730

Vcc1, Vcc2, RSTIN, MR, WDI to GND.....................-0.3V to +6V
RST, WDO to GND (open drain)...........................-0.3V to +6V
RST, WDO to GND (push-pull) ..............-0.3V to (Vcc1 + 0.3V)
Input Current/Output Current (all pins) ........................20mA
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23-6 (derate 8.7mW/°C above +70°C) .. ....696mW
8-Pin SOT23-8 (derate 8.9mW/°C above +70°C) .... ..714mW
Operating Temperature Range ................ .....-40°C to +85°C
Storage Temperature Range ................... ...-65°C to +150°C
Junction Temperature................................. ................+150°C
Lead Temperature (soldering, 10s) ............... ............+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The MAX6730MAX6735 single-/dual-/triple-voltage microprocessor (P) supervisors feature a watchdog timer and manual reset capability. The MAX6730 MAX6735 offer factory-set reset thresholds for monitoring voltages from +0.9V to +5V and an adjustable reset input for monitoring voltages down to +0.63V. The combination of these features significantly improves system reliability and accuracy when compared to separate ICs or discrete components.

The active-low reset output asserts and remains asserted for the reset timeout period after all the monitored voltages exceed their respective thresholds. Multiple factoryset reset threshold combinations reduce the number of external components required. The MAX6730/MAX6731 monitor a single fixed voltage, the MAX6732/MAX6733 onitor two fixed voltages, and the MAX6734/MAX6735 onitor two fixed voltages and one adjustable voltage. All evices are offered with six minimum reset timeout periods anging from 1.1ms to 1120ms.

The MAX6730MAX6735 feature a watchdog timer with n independent watchdog output. The watchdog timer revents system lockup during code execution errors. watchdog startup delay of 54s after reset asserts llows system initialization during power-up. The watchdog perates in normal mode with a 1.68s delay after nitialization. The MAX6730/MAX6732/MAX6734 provide n active-low, open-drain watchdog output. The AX6731/MAX6733/MAX6735 provide an active-low, ush-pull watchdog output.

Other features include a manual reset input (MAX6730/ AX6731/MAX6734/MAX6735) and push-pull reset output MAX6731/MAX6733/MAX6735) or open-drain reset utput (MAX6730/MAX6732/MAX6734). The MAX6730 AX6733 are offered in a tiny SOT23-6 package. The AX6734/MAX6735 are offered in a space-saving OT23-8 package. All devices are fully specified over he extended temperature range (-40°C to +85°C).