Analog Devices Inc./Maxim Integrated MAX6376UR22-T

Overview

MAX6376UR22-T from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.20V threshold (±2.5% over temperature), 500nA supply current at +25°C, and guaranteed operation down to VCC = 1V. Its primary circuit role is asserting a logic-high reset signal when VCC falls below threshold - used in portable equipment power sequencing and microcontroller supervision.

For engineers reviewing the MAX6376UR22-T datasheet, MAX6376UR22-T pinout, MAX6376UR22-T application, or MAX6376UR22-T equivalent, key selection criteria include its active-high push-pull output configuration, 2.20V trip point, SC70/SOT23-3 package compatibility, transient immunity up to 200µs at 100mV overdrive, and guaranteed output state retention down to 1V supply.

Technical Context

The MAX6376UR22-T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.20V detection threshold. It uses no external components and ignores fast VCC transients - validated by a maximum transient duration of 200µs at 100mV overdrive (VTH − VCC).

This device belongs to the MAX6375–MAX6380 family of single-function voltage detectors. Unlike open-drain variants (e.g., MAX6377), it provides a push-pull active-high output (OUT = high when VCC < VTH), eliminating need for external pull-up resistors while supporting direct interface to CMOS inputs.

Key Specifications

Pinout & Package

MAX6376UR22-T is housed in a 3-pin SOT23-3 package (lead-free, tape-and-reel). Pin 1 = OUT (active-high push-pull), Pin 2 = GND, Pin 3 = VCC. The package meets JEDEC MO-178AB standard with 0.95mm pitch and 1.3mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB22DBZR and APX803S-22SA-7, the MAX6376UR22-T delivers optimal balance of ultra-low ICC (500nA), precise threshold (±2.5%), and active-high push-pull output - enabling direct replacement in battery-critical systems without layout or firmware changes.

Availability

MAX6376UR22-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, wearable fitness trackers, smart meter battery backup, and other applications requiring stable component supply with long-term manufacturability.

Supply support for MAX6376UR22-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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.

The MAX6375–MAX6380 series was designed specifically for ultra-low-power supply monitoring in battery-constrained systems - delivering precision voltage detection with zero external components and guaranteed operation down to 1V.

FAQ

What is the exact threshold voltage and tolerance of the MAX6376UR22-T?

The MAX6376UR22-T has a nominal threshold voltage of 2.20V with a tolerance of ±2.5% over the full operating temperature range (−40°C to +85°C). At +25°C, the typical value is 2.200V, with min/max bounds of 2.167V and 2.233V respectively. This specification is factory-trimmed and does not require external calibration. The MAX6376UR22-T maintains this accuracy without additional components.

Does the MAX6376UR22-T require any external components to operate?

No, the MAX6376UR22-T requires no external components. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. Unlike discrete resistor-divider supervisors, the MAX6376UR22-T achieves 2.20V detection with zero external parts - reducing BOM count, PCB area, and assembly cost while improving reliability.

What is the output configuration of the MAX6376UR22-T and how does it interface with an MCU?

The MAX6376UR22-T features an active-high push-pull output. When VCC falls below 2.20V, OUT drives logic-high; when VCC is above threshold, OUT drives logic-low. This allows direct connection to MCUs with active-high reset inputs (e.g., many ARM Cortex-M parts) without pull-up resistors. The MAX6376UR22-T sources 500µA and sinks 1.2mA, ensuring robust drive strength.

How does the MAX6376UR22-T handle power supply transients?

The MAX6376UR22-T rejects short-duration negative-going VCC transients via internal filtering. According to its datasheet, it tolerates glitches up to 200µs wide when the overdrive (VTH − VCC) is 100mV. This prevents false resets caused by switching noise or load dumps. The MAX6376UR22-T's hysteresis of 100mV further enhances noise immunity during threshold crossing.

Is the MAX6376UR22-T available in both leaded and lead-free packaging?

Yes, the MAX6376UR22-T is available in both leaded and lead-free versions. The standard "-T" suffix denotes leaded packaging; for lead-free, replace "-T" with "+T" in the order code (e.g., MAX6376UR22+T). Both versions use the same SOT23-3 package outline and electrical specifications, and are supplied in tape-and-reel format only.