MAX6335US23D3

Overview

The MAX6335US23D3 is a microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It monitors power supplies in 1.8V to 3.3V systems, asserting an active-high reset signal when the VCC supply voltage declines below a preset threshold of 2.3V or when manual reset is asserted. The device features a debounced manual-reset input and maintains the correct state for VCC down to 0.7V. It operates within a temperature range of -40°C to +125°C and is housed in a 4-pin SOT-143 package.

Feature Summary

• Provides active-high reset output for monitoring single power supply rails
• Includes a debounced manual-reset input for system control
• Maintains valid reset state at supply voltages as low as 0.7V
• Eliminates external components through integrated precision threshold monitoring

Applications

• Microprocessor (µP) power supply supervision
• Digital system voltage monitoring
• Battery-powered devices requiring low standby current
• Embedded systems with manual reset capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for obsolete or end-of-life notices, as Maxim Integrated products may have limited availability. Ensure the specific suffix D3 corresponds to the required active-high output configuration and 2.3V threshold before procurement.

Selection Notes

Select this part when an active-high reset signal is required for the application logic. Compare against MAX6336 and MAX6337 variants if active-low outputs are acceptable, as they share similar electrical characteristics but differ in output stage configuration. Verify that the 2.3V threshold aligns with the monitored rail's minimum operating voltage requirements.

Part Context

This component belongs to the MAX6335/MAX6336/MAX6337 family of ultra-low-voltage, low-power µP reset circuits. These devices are designed to increase circuit reliability and reduce cost by eliminating external components and adjustments. The family shares identical functionality except for the reset output polarity and minimum operating voltage guarantees.

Replacement Considerations

Direct functional substitutes include MAX6336US23D3+T (active-low output) and MAX6337US23D3+T (open-drain active-low output). Verify that the change from active-high to active-low output does not require logic inversion in the target design.