MAX6745

VCC1, VCC2, POK1 to GND ....................................-0.3V to +6V
Open-Drain RESET, PFO to GND.............................-0.3V to +6V
Push-Pull RESET to GND..........................-0.3V to (VCC1 + 0.3V)
MR, RSTIN, PFI to GND............................-0.3V to (VCC1 + 0.3V)
Input/Output Current, All Pins ..........................................20mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............247mW
Operating Temperature Range ........................-40°C to +85°C
Junction Temperature....................................... .............+150°C
Storage Temperature Range ..........................-65°C to +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 MAX6736MAX6745 are low-power dual-/triplevoltage microprocessor (P) supervisors. These MAX6745 assert a reset if any monitored supply falls below its factory-trimmed or adjustable threshold and maintain reset for a  inimum timeout period after all supplies rise above their thresholds. The integrated dual/triple supervisory circuits  MAX6745 ignificantly reduce size and power compared to separate ICs or discrete components. The low supply current of 6A makes these devices ideal for portable equipment.

The MAX6736/MAX6737 are dual fixed-voltage P supervisors with a manual reset input. The MAX6738/ MAX6739 have one fixed and one adjustable reset threshold and a manual reset input. The MAX6740/ MAX6743 are triple-voltage P supervisors with two fixed and one user-adjustable reset threshold inputs. The MAX6741/MAX6744 are dual-voltage P supervisors with a power-OK (POK) output ideal for powersupply sequencing. The  AX6742/MAX6745 monitor the primary VCC supply and have an independent power-fail comparator.

The MAX6736MAX6745 monitor I/O supply voltages (VCC1) from 1.8V to 5.0V and core supply voltages (VCC2) from 0.9V to 3.3V with factory-trimmed reset threshold voltage options (Table 1). An external adjustable RSTIN input option allows monitoring voltages down to 0.5V.

A variety of push-pull or open-drain reset outputs along with manual reset input and power-fail input/output features are available (see the Selector Guide). The MAX6736MAX6745 are offered in a space-saving 5-pin
SC70 package and operate over the -40°C to +85°C temperature range.