Analog Devices Inc./Maxim Integrated MAX6375UR22

Overview

MAX6375UR22 from Maxim Integrated is an ultra-low-power, active-low voltage detector in SOT23-3 package, with factory-trimmed 2.20V threshold (±2.5% over temperature), 500nA supply current, and push-pull output. It monitors VCC supply voltage in battery-powered systems and asserts logic-low OUT when VCC drops below threshold - used for precision brownout detection in portable medical sensors and low-power IoT nodes.

For engineers reviewing the MAX6375UR22 datasheet, MAX6375UR22 pinout, MAX6375UR22 application, or MAX6375UR22 equivalent, key selection criteria include its 2.20V trip point, -40°C to +85°C operation, SC70/SOT23 footprint compatibility, and immunity to sub-20µs VCC transients - critical for reliable reset generation in energy-harvesting edge devices.

Technical Context

The MAX6375UR22 integrates a precision bandgap reference, comparator, and laser-trimmed resistive divider to set a fixed 2.20V detection threshold. Its internal architecture eliminates external components and ensures stable trip voltage across temperature without calibration.

It features active-low push-pull output with VOL ≤ 0.4V at 100µA sink, operates down to 1.2V VCC, and ignores fast negative-going transients - propagation delay is 6.3µs (falling) and 9.5µs (rising) under specified conditions, with hysteresis of 100mV.

Key Specifications

Pinout & Package

MAX6375UR22 is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), with 1.3mm × 2.9mm footprint and 0.95mm height - compatible with high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3123QDBVRQ1 and APX803S-22SA-7, the MAX6375UR22 delivers lowest ICC (500nA) and guaranteed ±2.5% accuracy over full temperature range - making it optimal for long-life battery applications demanding precision without design compromises.

Availability

MAX6375UR22 is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered telematics, and industrial wireless nodes requiring stable component supply with consistent parametric performance across production lots.

Supply support for MAX6375UR22 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 and mixed-signal ICs for power, sensing, and interface applications - known for high-reliability, low-power solutions in harsh environments.

The MAX6375–MAX6380 family targets ultra-low-power voltage monitoring in space-constrained, battery-operated systems - delivering factory-trimmed thresholds, nanoscale supply current, and transient-hardened operation without external components.

FAQ

What is the exact threshold voltage and tolerance of MAX6375UR22?

The MAX6375UR22 has a factory-trimmed nominal threshold voltage of 2.20V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +85°C. This specification is confirmed in Table 1 of the datasheet, where suffix "R22" explicitly maps to 2.20V (min 2.145V, typ 2.200V, max 2.250V at -40°C to +85°C). The MAX6375UR22 achieves this without external calibration components.

Does MAX6375UR22 support operation below 2.20V VCC?

Yes, the MAX6375UR22 remains functional and maintains correct output logic state down to VCC = 1.2V, as stated in the General Description and Electrical Characteristics table. While its detection function activates only when VCC falls below 2.20V, the device continues to assert the active-low output correctly even as VCC declines further - ensuring robust reset hold-down during deep brownout conditions.

What is the output configuration of MAX6375UR22 and how does it interface with MCUs?

The MAX6375UR22 features an active-low push-pull output, meaning it actively drives OUT low when VCC < 2.20V and high-impedance (not actively driven high) otherwise. This allows direct connection to standard CMOS reset inputs without external pull-up resistors. The output sinks ≥100µA with VOL ≤ 0.4V, meeting common MCU reset pin requirements - verified in the Electrical Characteristics table under "OUT Output Voltage (MAX6375/MAX6377/MAX6378/MAX6380)".

How does MAX6375UR22 handle power-supply transients?

The MAX6375UR22 is designed to ignore fast negative-going VCC transients: the Typical Operating Characteristics graph "Maximum Transient Duration vs. Threshold Overdrive" shows it rejects glitches shorter than ~20µs at 200mV overdrive. This immunity prevents false resets during DC/DC switching noise or load dump events - a key differentiator confirmed in the Applications Information section and supported by propagation delay specs (6.3µs falling, 9.5µs rising).

Is MAX6375UR22 available in both leaded and lead-free packaging?

Yes, MAX6375UR22 is offered in both leaded and lead-free versions. Per the Ordering Information section, lead-free packaging is specified by replacing the "-T" suffix with "+T" (e.g., MAX6375UR22+T). The device is supplied in tape-and-reel format only, and both variants use the same SOT23-3 package outline with identical mechanical dimensions and thermal characteristics.