Analog Devices Inc./Maxim Integrated MAX967ESA

Overview

The MAX967ESA from Maxim Integrated is a dual micropower rail-to-rail input/output comparator with integrated 1.235V ±1.5% reference, programmable hysteresis, and 8-pin SO package. It operates from +1.6V to +5.5V single supply, draws 10–16µA total supply current, features open-drain outputs swingable beyond VCC to 6V, and targets ultra-low-voltage 2-cell battery systems.

For engineers reviewing the MAX967ESA datasheet, MAX967ESA pinout, MAX967ESA application, or MAX967ESA equivalent, this page delivers verified functional identity, validated pin roles, confirmed dual-comparator timing behavior (10µs propagation delay at 50mV overdrive), precise reference accuracy (±1.5% over 0°C to +85°C), and real-world voltage-level translation use cases - all grounded in Maxim's official 19-1226 Rev 4 datasheet.

Technical Context

The MAX967ESA implements two independent comparators sharing a common HYST pin for synchronized hysteresis programming and a single REF output delivering 1.235V ±1.5% (0°C to +85°C). Its rail-to-rail input common-mode range (–0.25V to VCC – 0.25V) enables direct sensing across full supply rails, while open-drain outputs support level-shifting up to 6V with external pull-up.

Internal architecture supports low-voltage operation down to +1.6V with stable reference function and <15mV input offset voltage (SO package, –40°C to +85°C). Propagation delay remains ≤10µs at 50mV overdrive across temperature, and hysteresis is adjustable from ±1mV to ±50mV via external resistors tied to REF and HYST.

Key Specifications

Pinout & Package

MAX967ESA uses an 8-pin SO (Small Outline) package with footprint code S8-2, RoHS-compliant, 1.27mm pitch, and standard JEDEC MS-012AC outline.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual comparator with reference applications.

Compared with MAX967ESA, MAX968ESA provides dedicated window-comparator topology with identical pinout but fixed internal routing, while TLV3702IDR trades reference integration for wider supply range and lower quiescent current - making MAX967ESA optimal for space-constrained, battery-powered dual-threshold detection.

Availability

MAX967ESA is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, portable medical devices, and low-power industrial sensors requiring stable component supply and long-term lifecycle support.

Supply support for MAX967ESA 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 MAX965–MAX970 family was engineered specifically for ultra-low-voltage, micropower comparator applications in battery-constrained systems - emphasizing rail-to-rail operation, integrated reference, and programmable hysteresis in minimal footprints.

FAQ

What is the maximum supply voltage the MAX967ESA can tolerate?

The MAX967ESA absolute maximum supply voltage is +6V. However, its specified operating range is +1.6V to +5.5V. Operation above +5.5V may cause parametric degradation or reliability risk. The device's open-drain outputs can be pulled up to +6V regardless of VCC, enabling safe interface with higher-voltage logic domains while VCC remains within spec.

Does the MAX967ESA require external hysteresis components for basic operation?

No - the MAX967ESA functions correctly with HYST pin tied directly to REF, enabling its internal hysteresis (±1mV typical). External resistors are only needed when programmable hysteresis beyond ±1mV is required. This simplifies design for applications needing minimal noise immunity, such as basic battery undervoltage detection.

Can the MAX967ESA's internal reference be used to bias external circuitry?

Yes - the REF pin sources up to 50µA with ±1.5% accuracy (0°C to +85°C). It can directly bias resistive dividers, op-amp references, or ADC reference inputs in low-current applications. For best noise performance, a 0.1µF ceramic capacitor must be placed between REF and GND, close to the MAX967ESA package.

How does the MAX967ESA behave when VCC drops below 1.6V?

Below +1.6V, the MAX967ESA's reference output degrades and may fall out of specification, though comparators often remain functional down to ~1.0V. Input common-mode range stays rail-to-rail, but propagation delay increases and output sink capability weakens. For reliable operation, maintain VCC ≥ +1.6V - the datasheet specifies performance only within +1.6V to +5.5V.

Is the MAX967ESA pin-compatible with other devices in the MAX965–MAX970 family?

The MAX967ESA shares the same 8-pin SO (S8-2) footprint and pinout with MAX965ESA, MAX966ESA, and MAX968ESA. However, internal functionality differs: MAX966ESA lacks REF/HYST pins (unused pins are NC), and MAX965ESA has only one comparator. Thus, PCB layout is compatible, but firmware and external circuitry must match the specific variant's features.