Analog Devices Inc./Maxim Integrated MAX6764UT+T

Overview

The MAX6764UT+T from Analog Devices is a low-power, single-supply window voltage detector with externally adjustable undervoltage and overvoltage thresholds, independent open-drain UV and OV outputs, 10μA supply current at 3.6V, and operation down to V_CC = 1.4V. It monitors system power rails in telecom and industrial DC-DC converter modules using precision 0.5V internal reference inputs (UVIN/OVIN).

For engineers reviewing the MAX6764UT+T datasheet, MAX6764UT+T pinout, MAX6764UT+T application, or MAX6764UT+T equivalent, this device supports flexible threshold programming for supplies as low as 0.5V, delivers fast 20μs response to voltage excursions, maintains output validity down to 1V V_CC, and operates across -40°C to +125°C for automotive and harsh-environment designs.

Technical Context

The MAX6764UT+T implements a dual-input window detection architecture: UVIN and OVIN each compare against a fixed 0.5V internal reference with 0.7% hysteresis, enabling fully external threshold setting via resistor dividers. Its open-drain UV and OV outputs assert independently-UV low when UVIN < 0.5V, OV low when OVIN > 0.5V-with no timeout delay and guaranteed logic state down to V_CC = 1.0V.

Unlike factory-trimmed variants (e.g., MAX6757), the MAX6764UT+T omits SET, MR, OVLATCH, and VCC2 pins, simplifying design for applications requiring only user-defined window boundaries. It draws only 10μA typical supply current and features ±20nA input bias current on UVIN/OVIN, minimizing loading on high-impedance divider networks.

Key Specifications

Pinout & Package

MAX6764UT+T is housed in a 6-pin SOT23 package (package code U6+1, outline 21-0058) with thermal resistance θ_JA = 115°C/W on multilayer board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar window voltage detection applications.

Compared with MAX6763UT+T and TLV809EADBZR, the MAX6764UT+T uniquely provides both independently configurable UV and OV detection with open-drain outputs, enabling flexible fault-signaling topologies in high-reliability power systems where threshold adaptability and output interoperability are essential.

Availability

MAX6764UT+T is available at Aetrix Electronics and suitable for telecom power supervision, data center DC-DC modules, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6764UT+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6764UT+T belongs to the MAX6754–MAX6764 family of low-power window detectors, designed specifically for flexible, high-accuracy power-rail supervision in space-constrained and thermally demanding applications.

FAQ

What is the function of the UVIN and OVIN pins on the MAX6764UT+T?

The UVIN pin on the MAX6764UT+T is the undervoltage input: when voltage at UVIN falls below the internal 0.5V reference, the open-drain UV output asserts low. The OVIN pin is the overvoltage input: when voltage at OVIN exceeds 0.5V, the open-drain OV output asserts low. Both inputs feature 0.7% hysteresis and ±20nA bias current, enabling precise external threshold setting via resistor dividers - a core capability of the MAX6764UT+T.

Does the MAX6764UT+T have a manual reset (MR) input?

No, the MAX6764UT+T does not include a manual reset (MR) input. Unlike earlier members of the MAX6754–MAX6764 family (e.g., MAX6757–MAX6762), the MAX6764UT+T is optimized for fully external threshold configuration and omits MR, SET, OVLATCH, and VCC2 pins. Its 6-pin SOT23 layout dedicates all terminals to V_CC, GND, UVIN, OVIN, UV, and OV - confirming absence of MR functionality in the MAX6764UT+T.

What is the minimum operating voltage for the MAX6764UT+T?

The MAX6764UT+T requires a minimum V_CC of 1.4V to monitor external supplies, though its outputs remain valid down to V_CC = 1.0V. This 1.4V minimum ensures proper internal reference and comparator operation while allowing safe fault signaling during brownout conditions - a key specification confirmed in the Electrical Characteristics table of the MAX6764UT+T datasheet.

Can the MAX6764UT+T monitor voltages lower than 0.5V?

No, the MAX6764UT+T cannot reliably monitor voltages lower than 0.5V. Its internal reference is fixed at 0.5V for both UVIN and OVIN inputs, and the datasheet specifies UVIN/OVIN threshold voltage as 0.485V to 0.515V. Attempting to set thresholds below this range violates the device's operational specification and results in undefined behavior - the MAX6764UT+T is designed for supplies ≥0.5V, as explicitly stated in the General Description and Applications sections.

What package type is used for the MAX6764UT+T?

The MAX6764UT+T is packaged in a 6-pin SOT23 case (package code U6+1, outline number 21-0058), with thermal resistance θ_JA = 115°C/W on multilayer PCBs. This compact surface-mount package supports high-density layouts in telecom, automotive, and industrial applications - consistent with the "U6+1" marking in the MAX6764UT+T ordering information and Package Information section of the datasheet.