Analog Devices Inc./Maxim Integrated MAX6388XS17D6-T

Overview

MAX6388XS17D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.67V VCC reset threshold (±2.5% over -40°C to +125°C), 560ms minimum reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, enabling reliable power-up/brownout detection in space-constrained battery-powered systems.

For engineers reviewing the MAX6388XS17D6-T datasheet, MAX6388XS17D6-T pinout, MAX6388XS17D6-T application, or MAX6388XS17D6-T equivalent, key selection criteria include its 4-pin SC70 package, dual-monitoring capability via RESET IN, guaranteed reset validity down to VCC = 1V, and AEC-Q100-qualified automotive variants.

Technical Context

The MAX6388XS17D6-T integrates a precision voltage comparator for VCC monitoring against a fixed 1.67V threshold and a separate +1.27V reference comparator for the RESET IN pin, enabling independent supervision of two power rails. Its internal timer ensures reset assertion for ≥560ms after VCC or RESET IN recovers above their respective thresholds.

It features an active-high push-pull RESET output that drives high during fault conditions and deasserts cleanly upon recovery, eliminating external pullup requirements. The device guarantees correct logic state for VCC ≥ 1V and provides negative-going transient immunity up to 100mV overdrive with pulse widths under 10µs.

Key Specifications

Pinout & Package

MAX6388XS17D6-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, optimized for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6388LT17D6-T and TLV803SDBZR, the MAX6388XS17D6-T uniquely delivers dual-voltage supervision in the smallest footprint (4-pin SC70), making it optimal for next-generation compact modules requiring both primary and auxiliary rail monitoring without increasing PCB area.

Availability

MAX6388XS17D6-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical wearable sensors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6388XS17D6-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 demanding industrial, automotive, and computing applications.

The MAX6381–MAX6390 family was engineered specifically for low-power, high-accuracy microprocessor reset supervision in space- and energy-constrained systems, with emphasis on dual-rail monitoring, extended temperature operation, and minimal quiescent current.

FAQ

What is the exact reset threshold voltage of MAX6388XS17D6-T and how stable is it over temperature?

The MAX6388XS17D6-T has a factory-set VCC reset threshold of 1.67V, with guaranteed accuracy of ±2.5% over the full operating range of –40°C to +125°C. Its tempco is 60ppm/°C, meaning threshold drift is tightly bounded and predictable across automotive and industrial environments. This specification is verified per the Electrical Characteristics table in the official Maxim datasheet Rev 7.

Does MAX6388XS17D6-T support monitoring of a second voltage rail, and if so, how is it implemented?

Yes, MAX6388XS17D6-T supports dual-voltage monitoring via its dedicated RESET IN pin, which connects to an internal +1.27V reference comparator. To supervise a second rail, apply the target voltage to RESET IN through a resistor divider-e.g., for a 3.3V rail, use R1 = 162kΩ and R2 = 100kΩ to set ~3.3V threshold. The MAX6388XS17D6-T asserts reset if either VCC or RESET IN falls below its respective threshold.

What is the function of the RESET output on MAX6388XS17D6-T, and what load can it drive?

The RESET output of MAX6388XS17D6-T is an active-high push-pull driver. When asserted (high), it sources up to 800µA at VCC ≥ 4.5V or 150µA at VCC ≥ 1.8V; when deasserted (low), it sinks up to 3.2mA at VCC ≥ 4.5V or 80µA at VCC ≥ 1.0V. This eliminates external pullup resistors and directly interfaces with standard CMOS μP reset inputs without level-shifting.

Can MAX6388XS17D6-T operate reliably during deep brownout conditions, and down to what VCC level does it guarantee correct reset behavior?

Yes, MAX6388XS17D6-T guarantees valid RESET output logic state down to VCC = 1.0V, ensuring deterministic reset assertion even during severe brownout. Below 1.0V, operation is not specified-but the device maintains correct behavior through the entire 1.0V–5.5V operating range, including during power-down sequences where VCC decays slowly.

Is MAX6388XS17D6-T qualified for automotive applications, and what packaging options support AEC-Q100 compliance?

The MAX6388XS17D6-T itself is RoHS-compliant and built in a lead-free 4-pin SC70 package, but AEC-Q100 qualification applies only to variants with the "/V" suffix (e.g., MAX6388XS17D6/V+T). This specific part number lacks the "/V" designation and is intended for industrial and commercial use; for automotive deployment, select the /V version with identical electrical specs and same SC70 footprint.