Analog Devices Inc./Maxim Integrated MAX6383XR17D1+T

Overview

MAX6383XR17D1+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 1.67V reset threshold (±2.5% over –40°C to +125°C), 1ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors single power rail VCC in battery-powered or space-constrained embedded systems requiring guaranteed reset assertion down to VCC = 1V.

For engineers reviewing the MAX6383XR17D1+T datasheet, MAX6383XR17D1+T pinout, MAX6383XR17D1+T application, or MAX6383XR17D1+T equivalent, key selection criteria include open-drain output compatibility with shared reset buses, ultra-low quiescent current for extended battery life, tight reset threshold accuracy across automotive temperature range, and SC70-3 package footprint constraints.

Technical Context

The MAX6383XR17D1+T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 1.67V threshold, with internal timer ensuring reset remains asserted for ≥1ms after VCC recovers above threshold. Its open-drain RESET output requires an external pullup resistor and guarantees valid logic state down to VCC = 1V.

No manual reset input (MR) or auxiliary RESET IN functionality is integrated - this variant is optimized for minimal-pin-count single-supply monitoring where external reset control or dual-rail supervision is unnecessary. The device operates across –40°C to +125°C and is RoHS-compliant.

Key Specifications

Pinout & Package

MAX6383XR17D1+T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208) with exposed pad not electrically connected. Pin functions are validated per Maxim's official pin description table for MAX6383 variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD1+T and TPS3808G16DBVR, the MAX6383XR17D1+T uniquely combines ultra-short 1ms reset timeout, open-drain output, and industry-leading 3μA supply current at 1.8V - making it optimal for rapid-recovery, battery-sensitive, and multi-source reset-bus applications.

Availability

MAX6383XR17D1+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6383XR17D1+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.

The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits targeting space- and energy-constrained embedded systems needing guaranteed reset behavior across harsh thermal environments.

FAQ

What is the exact reset threshold voltage of MAX6383XR17D1+T and how stable is it over temperature?

The MAX6383XR17D1+T has a factory-set reset threshold of 1.67V with ±2.5% tolerance over the full operating range of –40°C to +125°C. This specification is guaranteed by design and ensures reliable detection of brownout conditions on 1.8V rails without external calibration. The MAX6383XR17D1+T achieves this stability via laser-trimmed bandgap references and low-tempco comparator design.

Does MAX6383XR17D1+T include a manual reset input (MR) or auxiliary voltage monitor (RESET IN)?

No, the MAX6383XR17D1+T does not include MR or RESET IN functionality. It is a dedicated single-rail supervisory circuit with only VCC monitoring and open-drain RESET output. These features are reserved for other members of the MAX6381–MAX6390 family (e.g., MAX6384 includes MR; MAX6387 includes RESET IN). The MAX6383XR17D1+T simplifies design by omitting unused pins.

What is the minimum reset timeout period for MAX6383XR17D1+T and why is it important?

The MAX6383XR17D1+T provides a minimum reset timeout of 1ms after VCC rises above the 1.67V threshold. This brief but guaranteed hold time ensures the microprocessor completes internal power-on reset sequencing before code execution begins - critical for preventing spurious startup in fast-recovery systems like battery-powered sensors. The MAX6383XR17D1+T achieves this with a precision RC timer trimmed during wafer test.

Can MAX6383XR17D1+T operate reliably at VCC = 1.0V, and what happens to the RESET output below that?

Yes, the MAX6383XR17D1+T guarantees correct RESET output logic state down to VCC = 1.0V - meaning it will assert low when VCC falls below 1.67V and hold low for ≥1ms after recovery, even at 1.0V supply. Below 1.0V, operation is not specified; the RESET output may become indeterminate. This feature makes the MAX6383XR17D1+T suitable for deep brownout scenarios where other supervisors fail.

What package type and footprint does MAX6383XR17D1+T use, and are there land pattern recommendations?

The MAX6383XR17D1+T uses a 3-pin SC70 package (outline number 21-0075, package code X3+2) with land pattern number 90-0208. This ultra-small footprint measures 2.0mm × 1.25mm × 0.95mm and requires standard reflow soldering per JEDEC J-STD-020. Maxim recommends using the official land pattern to ensure thermal performance and solder joint reliability - the MAX6383XR17D1+T does not include an exposed thermal pad.