Analog Devices Inc./Maxim Integrated MAX6386XS46D2-T

Overview

MAX6386XS46D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.63V reset threshold (±2.5% over −40°C to +125°C), and 20ms minimum 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 MAX6386XS46D2-T datasheet, MAX6386XS46D2-T pinout, MAX6386XS46D2-T application, or MAX6386XS46D2-T equivalent, key selection criteria include its 4-pin SC70 package, open-drain reset architecture requiring external pullup, 4.63V threshold for +5V rail supervision, and MR-driven reset assertion with guaranteed validity down to 1V supply.

Technical Context

The MAX6386XS46D2-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 4.63V threshold, with ±2.5% accuracy across −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a precise 20ms minimum reset timeout after VCC recovery or MR release.

It integrates a debounced manual reset input (MR) with 1µs minimum pulse width support and 100ns glitch rejection, internally pulled up to VCC via 63kΩ. The open-drain RESET output guarantees valid logic state down to VCC = 1.0V and sinks up to 3.2mA at VCC ≥ 4.5V with VOL ≤ 0.4V.

Key Specifications

Pinout & Package

MAX6386XS46D2-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 MAX6386XS46D2-T, MAX6326XR46D2-T offers simplified output drive but removes MR functionality, while TPS3808G33DBVR serves a different voltage domain entirely - making MAX6386XS46D2-T uniquely suited for +5V systems needing manual reset and open-drain flexibility.

Availability

MAX6386XS46D2-T is available at Aetrix Electronics and suitable for industrial controllers, portable medical sensors, battery-powered edge gateways, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for MAX6386XS46D2-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 demanding industrial, automotive, and computing applications, emphasizing low power, high reliability, and small form factor.

The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for low-voltage, low-power embedded systems - specifically targeting applications where supply rail integrity, reset timing accuracy, and minimal quiescent current are critical.

FAQ

What is the exact reset threshold voltage of the MAX6386XS46D2-T?

The MAX6386XS46D2-T has a factory-set nominal reset threshold of 4.63V, with guaranteed limits of 4.51V (min) and 4.74V (max) at +25°C, and ±2.5% tolerance over the full −40°C to +125°C operating range. This threshold is laser-trimmed during production and does not require external components.

Does the MAX6386XS46D2-T support manual reset functionality?

Yes, the MAX6386XS46D2-T includes an active-low manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low forces reset assertion for the full 20ms timeout period after release, enabling pushbutton or logic-controlled system resets without external components.

What package type and dimensions does the MAX6386XS46D2-T use?

The MAX6386XS46D2-T is supplied in a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with a 0.65mm pin pitch. It is RoHS-compliant (+ suffix) and rated for −40°C to +125°C operation, matching land pattern 90-0187.

Can the MAX6386XS46D2-T operate reliably during deep brownout conditions?

Yes, the MAX6386XS46D2-T guarantees valid reset output state down to VCC = 1.0V. Its internal circuitry remains functional and correctly asserts or deasserts the open-drain RESET signal even as supply voltage collapses, preventing undefined microprocessor behavior during severe undervoltage events.

Is the MAX6386XS46D2-T pin-compatible with legacy Maxim reset ICs?

The MAX6386XS46D2-T shares pinout compatibility with other 4-pin SC70 variants in the MAX6384–MAX6390 family (e.g., MAX6384XS46D2-T, MAX6385XS46D2-T), but is not pin-compatible with 3-pin SC70 or 6-pin μDFN versions. It is also pin-compatible with MAX809/MAX810 series in same package footprint.