Analog Devices Inc./Maxim Integrated MAX6375XR23+T

Overview

MAX6375XR23+T from Maxim Integrated is an ultra-low-power, active-low voltage detector in SC70-3 package with factory-trimmed 2.32V threshold, ±2.5% accuracy over temperature, 500nA supply current, and open-drain output. It monitors VCC in portable battery-powered systems and asserts OUT low when supply drops below threshold - used for precision brownout detection in Li+-powered microcontroller reset circuits.

For engineers reviewing the MAX6375XR23+T datasheet, MAX6375XR23+T pinout, MAX6375XR23+T application, or MAX6375XR23+T equivalent, key selection criteria include threshold accuracy (±2.5%), ultra-low ICC (500nA), open-drain logic compatibility with mixed-voltage hosts, and immunity to sub-20µs VCC transients at 100mV overdrive.

Technical Context

The MAX6375XR23+T implements a precision bandgap reference and comparator with internally trimmed resistors to set a fixed 2.32V detection threshold. Its open-drain output sinks current when VCC falls below VTH and remains valid down to 1V supply - enabling reliable reset assertion even during deep brownout conditions.

It features built-in transient immunity: negative-going VCC glitches shorter than 20µs (at 100mV overdrive) are rejected, preventing false resets. Propagation delay is 6.3µs (typical, falling edge) and hysteresis is 100mV - ensuring stable output transition without oscillation near threshold.

Key Specifications

Pinout & Package

Package: SC70-3 (3-pin, 1.25mm × 2.0mm × 0.95mm, lead-free, tape-and-reel).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB23DBZR and APX803S-23SA-7, the MAX6375XR23+T delivers optimal trade-off of ultra-low ICC (500nA), open-drain configurability, and industrial-grade temperature stability (±2.5% over -40°C to +85°C), making it preferred for long-life battery systems requiring robust reset signaling.

Availability

MAX6375XR23+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, smart wearables, asset tracking beacons, and battery-backed memory backup systems requiring stable component supply and long-term lifecycle support.

Supply support for MAX6375XR23+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 high-performance analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.

The MAX6375–MAX6380 family was designed specifically for ultra-low-power voltage monitoring in battery-critical systems - delivering precision threshold detection with minimal quiescent current and robust transient rejection.

FAQ

What is the exact factory-trimmed threshold voltage of MAX6375XR23+T?

The MAX6375XR23+T has a nominal threshold voltage of 2.32V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +85°C). This value is laser-trimmed at wafer test and confirmed per Table 1 in the datasheet; the "R23" suffix explicitly denotes the 2.32V variant within the MAX6375 series.

Does MAX6375XR23+T require an external pullup resistor on the OUT pin?

Yes, MAX6375XR23+T features an active-low open-drain output and requires an external pullup resistor to a valid logic supply (1.8V–5.5V). The resistor value must be selected to ensure VOL ≤0.4V at ISINK = 100µA (per Electrical Characteristics table), typically 10kΩ–100kΩ depending on bus capacitance and speed requirements.

Can MAX6375XR23+T operate reliably below 1.2V supply?

No - while MAX6375XR23+T guarantees correct output logic state down to 1V VCC, its specified operating range begins at 1.2V. Below 1.2V, functionality is not characterized; the device may assert reset but timing, accuracy, and propagation delay are outside datasheet limits. For sub-1.2V monitoring, consider dedicated ultra-low-VCC supervisors.

What is the maximum transient duration MAX6375XR23+T can reject at 100mV overdrive?

At 100mV overdrive (i.e., VCC = VTH − 100mV = 2.22V), MAX6375XR23+T rejects transients up to 20µs in duration, as shown in Figure MAX6375-04. This ensures immunity to common switching noise and short power dips without generating false reset pulses - critical for stable operation in noisy DC/DC environments.

Is MAX6375XR23+T pin-compatible with other MAX6375 variants in SC70-3?

Yes - all MAX6375XRxx+T devices share identical SC70-3 pinout (GND, OUT, VCC), same footprint, and identical electrical interface. Only the threshold voltage differs between R22, R23, R24, etc. variants; no PCB changes are required when substituting within the MAX6375XR family for threshold tuning.