Analog Devices Inc./Maxim Integrated MAX6375UR23-T

Overview

MAX6375UR23-T from Maxim Integrated is an ultra-low-power, active-low voltage detector in SOT23-3 package, with factory-trimmed 2.32V threshold (±2.5% over temperature), 500nA supply current, and push-pull output. It monitors VCC supply voltage and asserts logic-low OUT when VCC falls below threshold-ideal for precision battery monitoring in portable medical sensors and low-power IoT nodes.

For engineers reviewing the MAX6375UR23-T datasheet, MAX6375UR23-T pinout, MAX6375UR23-T application, or MAX6375UR23-T equivalent, key selection criteria include reset threshold accuracy, sub-µA quiescent current, transient immunity up to 200µs at 100mV overdrive, and compatibility with 1.2V–5.5V VCC operation across -40°C to +85°C.

Technical Context

The MAX6375UR23-T implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.32V detection threshold-no external components required. Its push-pull output drives directly into CMOS inputs without pull-up resistors, and it maintains valid logic state down to 1V VCC.

Designed for immunity to fast transients, the device ignores negative-going VCC glitches ≤200µs at 100mV overdrive (VTH − VCC), per typical operating characteristics. Propagation delay is 6.3µs (falling) and 9.5µs (rising) over full temperature range, with ±2.5% threshold accuracy guaranteed from -40°C to +85°C.

Key Specifications

Pinout & Package

MAX6375UR23-T is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with SC70-3 but with higher power dissipation rating (320mW at +70°C).

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 MAX6375UR23-T uniquely delivers 2.32V accuracy, 500nA ICC, and push-pull drive in one SOT23-3 package-enabling smaller, simpler, and longer-lasting brownout protection without layout or BOM trade-offs.

Availability

MAX6375UR23-T is available at Aetrix Electronics and suitable for precision battery monitoring, load switching/power sequencing, and power-supply monitoring in digital/analog systems requiring stable component supply and long-term obsolescence management.

Supply support for MAX6375UR23-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 precision analog and mixed-signal ICs for power, sensing, and interface applications, with deep expertise in ultra-low-power circuit architecture.

The MAX6375–MAX6380 family was engineered specifically for battery-powered and energy-constrained systems needing highly accurate, zero-component voltage supervision with nanoscale quiescent current.

FAQ

What is the exact reset threshold voltage of MAX6375UR23-T and how is it trimmed?

The MAX6375UR23-T has a factory-trimmed nominal reset threshold voltage of 2.32V, with ±2.5% accuracy guaranteed over the full -40°C to +85°C temperature range. This value is achieved using laser-trimmed internal resistors during wafer sort, eliminating the need for external calibration or adjustment. The "R23" suffix in MAX6375UR23-T explicitly denotes this 2.32V threshold variant per Maxim's Selector Guide.

Does MAX6375UR23-T require any external components to operate?

No, the MAX6375UR23-T requires zero external components. It integrates a precision bandgap reference, comparator, and factory-trimmed resistor network to set its 2.32V detection threshold. Its push-pull output drives CMOS inputs directly-no pull-up resistor is needed. This integration reduces PCB area, BOM count, and potential failure points in space-constrained portable designs.

What is the supply current of MAX6375UR23-T and how does it vary with temperature?

The MAX6375UR23-T draws only 500nA typical supply current at +25°C, rising to ≤1.0µA over the full -40°C to +85°C range. Typical operating curves show ICC remains below 0.7µA up to +70°C at VCC = 3.3V, making it ideal for multi-year battery operation. This ultra-low ICC is enabled by proprietary low-power comparator and reference design within the 419-transistor die.

How does MAX6375UR23-T handle power supply transients?

The MAX6375UR23-T is designed to ignore fast negative-going VCC transients: it suppresses output assertion for glitches ≤200µs duration when VCC dips 100mV below the 2.32V threshold. This immunity is built into the internal comparator hysteresis and filtering-no external RC network is required. The device guarantees correct output logic state down to VCC = 1.0V, ensuring robustness during brownout recovery.

What package and pin configuration does MAX6375UR23-T use?

The MAX6375UR23-T is supplied in a RoHS-compliant 3-pin SOT23-3 package (JEDEC MO-178AA), with pin 1 = GND, pin 2 = OUT (active-low push-pull), and pin 3 = VCC. It shares footprint compatibility with SC70-3 but offers higher thermal performance (320mW at +70°C vs. 174mW). Tape-and-reel packaging is standard; lead-free versions use "+T" suffix.