MAX6346XR45-T

Overview

The MAX6346XR45-T is a single-channel voltage supervisor IC from the MAX6346 series, designed for ultra-low-power applications. It monitors one input voltage with a threshold of 4.5V and an overvoltage threshold of 4.599V. The device features an active low, push-pull output and a reset delay time of 100 ms minimum. Operating on a supply voltage up to 5.5V, it draws only 500 nA of quiescent current. Accuracy is specified at 1.5%. It operates within a temperature range of -40°C to +85°C and is available in SC-70-3 or SOT-23-3 packages.

Feature Summary

• Ultra-low power consumption with 500 nA operating current
• Precise voltage monitoring with 1.5% accuracy
• Active low push-pull output driver
• Compact surface-mount packaging options

Applications

• Microcontroller power-on reset circuits
• Battery-powered portable devices
• Digital system voltage supervision
• Embedded systems requiring low standby current

Procurement Notes

Verify package variant (SC-70-3 vs SOT-23-3) as pinout may differ slightly despite similar function. Confirm suffix 'T' indicates tape-and-reel packaging if reel quantity is required for assembly. Check RoHS compliance status via official datasheet revision history. Ensure thermal management meets Pd specifications for chosen enclosure. Validate supplier authenticity through Analog Devices authorized channels.

Selection Notes

Select this component when fixed 4.5V threshold suits system requirements. Consider alternative MAX6346 variants if different thresholds or manual reset functionality are needed. Evaluate package size constraints against PCB layout space. Compare quiescent current impact on overall battery life versus other supervisors. Verify compatibility with microcontroller reset input logic levels.

Part Context

Part of Maxim Integrated's MAX6346 family of ultra-low-power reset circuits. Designed for applications where minimal standby current is critical. Offers precise voltage monitoring without external components. Integrates into compact designs using small footprint packages. Commonly used in consumer electronics and industrial control systems requiring reliable power supervision.

Replacement Considerations

MAX6346UR46+T offers similar functionality with 4.63V threshold. MAX6346XR45+ provides non-tape version of same electrical specs. Cross-reference pinouts carefully between SC-70 and SOT-23 packages. Verify threshold voltage tolerance matches application requirements before substitution.