MAX6337US22D1-T

Overview

The MAX6337US22D1-T is a microprocessor supervisory circuit in a 4-pin SOT-143 package. It monitors a single voltage input with a threshold of 2.2V and an overvoltage threshold of 2.34V. The device features an active low, open-drain output and a manual reset input. It operates within a supply voltage range up to 5.5V, with a reset delay time of 1ms minimum and accuracy of 1.8%. The operating temperature range spans from -40°C to +125°C, and the typical quiescent current is 3.3µA.

Feature Summary

• Monitors power supply voltage levels to ensure system reliability by asserting a reset signal when voltage drops below a preset threshold.
• Includes a debounced manual-reset input for user-initiated system resets without external components.
• Provides an active low, open-drain output compatible with various logic families.
• Designed for ultra-low-voltage applications with minimal power consumption.

Applications

• Microprocessor (µP) systems requiring voltage supervision
• Digital systems operating at 1.8V to 3.3V
• Low-power embedded designs

Procurement Notes

Verify the specific suffix D1 against official Analog Devices documentation to confirm the exact threshold voltage and package variant. Ensure the component source is authorized to guarantee authenticity, as counterfeit supervisory ICs may exhibit incorrect threshold voltages or timing characteristics. Cross-reference the datasheet revision date with the manufacturing lot code for compliance verification.

Selection Notes

Select this component when a fixed 2.2V threshold is required for single-supply monitoring. Consider the 1.8% accuracy and 3.3µA quiescent current for precision low-power applications. Verify that the open-drain output configuration suits the downstream logic interface requirements. Confirm thermal performance within the -40°C to +125°C range for the intended environment.

Part Context

Part of the MAX6335/MAX6336/MAX6337 family of 4-pin, ultra-low-voltage, low-power µP reset circuits. These devices eliminate external components and adjustments by integrating precise voltage monitoring and manual reset functionality into a compact SOT-143 package.

Replacement Considerations

MAX6337US23D3+T offers a similar form factor but with a 2.3V threshold. MAX6335US19D2-T provides a 1.9V threshold option within the same family. Verify pinout compatibility and threshold voltage alignment before substitution.

FAQ

What is the reset delay time for the MAX6337US22D1-T?

The reset delay time is a minimum of 1ms.

Does the MAX6337US22D1-T include a watchdog timer?

No, this device does not feature a watchdog timer; it functions solely as a voltage supervisor with manual reset capability.