MAX6468XS16D3

Overview

The MAX6468XS16D3 is a microprocessor supervisory reset circuit manufactured by Analog Devices Inc. (Maxim Integrated). It monitors a single power-supply voltage with a fixed threshold of 1.575 V and asserts an active-low, push-pull reset output if the supply drops below this level. The device operates within a supply voltage range of 1.8 V to 5.0 V and supports a maximum supply voltage of 5.5 V. It features a manual reset input for edge-triggered, one-shot system resets. The circuit provides a minimum reset timeout period of 150 ms and consumes only 7 µA of quiescent current. It is housed in a compact SC-70-4 surface-mount package and functions reliably across an industrial temperature range from -40 °C to +125 °C.

Feature Summary

• Edge-triggered, one-shot manual reset function ensures the microprocessor enters reset mode for a fixed duration even during continuous manual reset activation.
• Factory-trimmed fixed threshold voltage eliminates the need for external resistors or adjustment components.
• Low quiescent current consumption of 7 µA supports battery-powered applications.
• Active-low, push-pull reset output drives standard logic interfaces directly.

Applications

• Microprocessor (µP) supervisory circuits
• Battery-operated electronic systems
• Portable consumer devices requiring low power monitoring

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability requirements before procurement. Note that availability may be limited due to product lifecycle status; check for end-of-life notifications or obsolescence warnings. Ensure packaging specifications match design constraints.

Selection Notes

Select this component when a fixed 1.575 V threshold is required for single-supervision applications. Consider the SC-70-4 package size for space-constrained designs. Verify that the 150 ms minimum reset timeout aligns with system startup timing requirements. Evaluate the 7 µA current draw against total system power budgets.

Part Context

The MAX6468 belongs to the Maxim Integrated microprocessor supervisory circuit family, designed to monitor power supplies and ensure reliable system initialization. These circuits typically integrate manual reset capabilities and precise voltage thresholds to replace discrete comparator-based solutions, simplifying board layout and improving reliability in embedded systems.

Replacement Considerations

Check for pin-compatible alternatives within the MAX6467/MAX6468 series with different threshold voltages if the 1.575 V setting is unsuitable. Verify functional equivalence with other single-channel supervisors offering similar reset timeouts and package types.

FAQ

What is the reset timeout period for the MAX6468XS16D3?

The device specifies a minimum reset timeout period of 150 ms after the supply voltage rises above the threshold or the manual reset edge occurs.

Does the MAX6468XS16D3 include a watchdog timer?

No, the MAX6468XS16D3 does not include a built-in watchdog timer; it functions solely as a voltage supervisor with manual reset capability.

What is the operating supply voltage range?

The circuit monitors supply voltages from 1.8 V to 5.0 V, with a maximum absolute maximum rating of 5.5 V.