Analog Devices Inc./Maxim Integrated MAX6376XR26

Overview

MAX6376XR26 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 2.63V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. It asserts a logic-high output when VCC falls below the threshold and is used in portable equipment power sequencing and Li+-battery voltage supervision.

For engineers reviewing the MAX6376XR26 datasheet, MAX6376XR26 pinout, MAX6376XR26 application, or MAX6376XR26 equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package, 2.63V trip point, transient immunity, and compatibility with low-voltage microcontroller reset inputs requiring high-assertion signaling.

Technical Context

The MAX6376XR26 implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.63V detection threshold. Its active-high push-pull output drives high (VOH ≥ 0.8×VCC) when VCC drops below VTH and low (VOL ≤ 0.4V at 1.2mA sink) otherwise, eliminating external pull-up components.

It operates across -40°C to +85°C with ±2.5% threshold accuracy and 40ppm/°C tempco, and ignores transients shorter than ~100µs at 100mV overdrive. Propagation delay is 6.3µs (typical) for falling VCC transitions.

Key Specifications

Pinout & Package

MAX6376XR26 is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.95mm), optimized for space-constrained portable designs. The package is RoHS-compliant and available in lead-free form (suffix +T).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB26DBZR and APX803S-26SA-7, the MAX6376XR26 uniquely combines SC70-3 miniaturization, 500nA current, and push-pull drive-enabling direct µC reset interfacing without layout compromise or accuracy trade-off.

Availability

MAX6376XR26 is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, smart home remotes, and industrial wireless sensor nodes requiring stable component supply, long-term availability, and RoHS-compliant packaging.

Supply support for MAX6376XR26 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 MAX6375–MAX6380 family delivers ultra-low-power voltage supervision for battery-critical systems, with variants optimized for different threshold voltages, output logic types, and package footprints-including the MAX6376XR26 for compact, active-high reset applications.

FAQ

What is the exact reset threshold voltage of the MAX6376XR26?

The MAX6376XR26 has a factory-trimmed nominal reset threshold of 2.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is confirmed in Table 1 of the datasheet under suffix R26, and applies specifically to the MAX6376 series (active-high push-pull) devices. The MAX6376XR26 maintains this threshold stability via internal bandgap reference and laser-trimmed resistors.

Does the MAX6376XR26 require an external pull-up resistor on its output?

No, the MAX6376XR26 does not require an external pull-up resistor because it features an active-high push-pull output stage. When VCC drops below 2.63V, the OUT pin actively drives high (VOH ≥ 0.8×VCC); when VCC is above threshold, it actively drives low (VOL ≤ 0.4V at 1.2mA load). This eliminates external components and simplifies interface to microcontroller reset inputs.

What package type and dimensions does the MAX6376XR26 use?

The MAX6376XR26 is supplied in a 3-pin SC70-3 package measuring 2.0mm × 2.1mm × 0.95mm. Its top marking is "ACZ", and it is available in tape-and-reel format only. The SC70-3 footprint provides significant board space savings over the alternative SOT23-3 option, making it ideal for ultra-compact portable designs where PCB real estate is constrained.

Can the MAX6376XR26 operate reliably at VCC = 1.2V?

Yes, the MAX6376XR26 is fully specified and guaranteed to maintain correct output logic state down to VCC = 1.0V, and operates across a full VCC range of 1.2V to 5.5V. At 1.2V, it continues to monitor supply voltage and assert the active-high output when VCC falls below 2.63V - though actual detection requires VCC to be within 100mV of the threshold per Electrical Characteristics table, meaning functional detection begins near 1.3V in practice.

How does the MAX6376XR26 handle power supply transients?

The MAX6376XR26 incorporates built-in transient immunity: it ignores fast negative-going VCC glitches shorter than approximately 100µs when the overdrive (VTH − VCC) is 100mV, as shown in Figure MAX6375-04. This prevents false resets caused by switching noise or load-dump events, ensuring robust operation in electrically noisy portable and industrial environments without requiring additional filtering components.