Analog Devices Inc./Maxim Integrated MAX6385XS30D4-T

Overview

MAX6385XS30D4-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 3.00V reset threshold (±2.5% over –40°C to +125°C), and 1120ms minimum VCC reset timeout. It features a debounced manual reset input (MR) with internal 63kΩ pullup, operates down to VCC = 1.0V, and consumes only 3μA at 1.8V - used in battery-powered controllers and critical μP power monitoring.

For engineers reviewing the MAX6385XS30D4-T datasheet, MAX6385XS30D4-T pinout, MAX6385XS30D4-T application, or MAX6385XS30D4-T equivalent, key selection factors include its 3.00V ±2.5% threshold accuracy, 1120ms VCC reset timeout, MR input timing compatibility, SC70-4 package footprint, and guaranteed reset validity down to 1V supply.

Technical Context

The MAX6385XS30D4-T implements a precision voltage comparator with internal 3.00V reference and temperature-compensated hysteresis (60ppm/°C tempco), paired with a monolithic timer that enforces a fixed 1120ms reset assertion window after VCC recovery. Its MR input is internally pulled up to VCC and accepts TTL/CMOS logic levels.

Reset assertion occurs when VCC falls below 3.00V or MR is driven low; the device guarantees correct reset output state for VCC ≥ 1.0V and exhibits immunity to negative-going VCC transients ≤35µs at 100mV overdrive, per characterization data.

Key Specifications

Pinout & Package

MAX6385XS30D4-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Compared with MAX809TRD3-T and TPS3808G30DBVR, the MAX6385XS30D4-T provides longer 1120ms reset hold time and integrated MR pullup - making it optimal for battery-powered systems requiring robust brownout recovery and field-serviceable reset capability without added passives.

Availability

MAX6385XS30D4-T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive telematics units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6385XS30D4-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.

The MAX6381–MAX6390 family delivers ultra-low-power microprocessor supervisory circuits optimized for battery-operated and thermally demanding environments, featuring factory-trimmed thresholds, wide temperature operation, and multiple reset output configurations.

FAQ

What is the exact reset threshold voltage of MAX6385XS30D4-T and how accurate is it over temperature?

The MAX6385XS30D4-T has a factory-set reset threshold of 3.00V, specified with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This is confirmed in the Electrical Characteristics table under "VCC Reset Threshold" with test conditions explicitly covering that range. The 60ppm/°C tempco ensures minimal drift across thermal gradients encountered in automotive and industrial deployments.

Does MAX6385XS30D4-T support manual reset, and what is the internal pullup resistance value?

Yes, MAX6385XS30D4-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC, as documented in the Electrical Characteristics table under "MR Internal Pullup Resistance". This allows direct connection of a momentary switch between MR and GND without external components, and the value is validated across –40°C to +125°C.

What is the reset timeout period for MAX6385XS30D4-T, and is it guaranteed minimum or typical?

The MAX6385XS30D4-T provides a guaranteed minimum VCC reset timeout of 1120ms, as indicated by the "D4" suffix in the part number and confirmed in the Reset Timeout Period table for MAX6381–MAX6389. The datasheet specifies this as a minimum value (not typical), ensuring reliable hold time even under worst-case process/voltage/temperature corners.

Can MAX6385XS30D4-T operate reliably at very low supply voltages, and down to what level does reset remain valid?

Yes, MAX6385XS30D4-T guarantees correct reset output logic state for VCC ≥ 1.0V, as stated in both the General Description and Absolute Maximum Ratings sections. This means the active-high RESET output remains valid and functional - correctly asserting high during fault conditions and deasserting low afterward - even as the supply drops to 1.0V, critical for graceful shutdown in battery-depleted scenarios.

What package type and footprint does MAX6385XS30D4-T use, and are land patterns available?

MAX6385XS30D4-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. The official land pattern and soldering recommendations are published by Maxim Integrated at maximintegrated.com/packages, and the package is RoHS-compliant (denoted by the "+T" suffix).