MAX691EPE+

Supervisors Overview

The MAX691EPE+ is a microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single voltage input with a threshold of 4.65 V and an overvoltage threshold of 4.75 V. The device operates within a supply voltage range up to 5.5 V and features a push-pull active low output. It includes a built-in watchdog timer, battery backup switching capability, and a reset delay time of 50 ms. The component supports chip enable functionality and power failure detection. It is housed in a 16-pin PDIP package and functions within a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Integrates watchdog timer and battery backup switching for system reliability
• Provides power failure detection with configurable reset delays
• Features chip enable signal for low-power management

Supervisors Applications

• Microprocessor system supervision
• Battery backup switching circuits
• Power failure detection systems

Supervisors Procurement Notes

Verify the specific suffix EPE+ corresponds to the 16-PDIP through-hole package and industrial temperature grade (-40°C to +85°C) required for your design. Confirm that the active-low push-pull output logic aligns with your microprocessor interface requirements. Ensure compatibility with the 4.65V threshold for your monitored rail. Check current distribution availability as stock levels may vary.

Supervisors Selection Notes

Select this component when a single-channel supervisor with integrated watchdog and battery backup is needed. The industrial temperature range suits harsh environments. Compare against MAX691ACPE+ if commercial temperature range (0°C to +70°C) suffices. Verify that the 50ms reset delay meets your system startup timing constraints. Ensure the 350uA operating current fits your power budget.

Supervisors Part Context

Part of the MAX691 series of supervisory circuits designed to simplify power management in embedded systems. The MAX691 family combines multiple monitoring functions into a single IC, reducing component count and board space. This specific variant targets applications requiring robust supervision with manual reset capabilities disabled but watchdog and backup features enabled.

Supervisors Replacement Considerations

MAX691ACPE+ offers similar functionality but with a commercial temperature range (0°C to +70°C) instead of industrial. MAX691EWE+ provides the same electrical characteristics but in a surface-mount SOIC-Wide-16 package. Verify pinout compatibility and thermal performance when substituting.