Analog Devices Inc./Maxim Integrated MAX967EUA+

Overview

The MAX967EUA+ from Maxim Integrated is a dual micropower comparator with rail-to-rail inputs/outputs, integrated 1.235V ±1.5% reference, programmable hysteresis, and ultra-low 1.6V to 5.5V single-supply operation. It draws only 10–16 µA per comparator, features open-drain outputs that swing beyond VCC to 6V, and is designed for precision threshold detection in space-constrained, battery-powered systems.

For engineers reviewing the MAX967EUA+ datasheet, MAX967EUA+ pinout, MAX967EUA+ application, or MAX967EUA+ equivalent, key selection criteria include its dual-comparator architecture with shared hysteresis control, internal reference accuracy over temperature, low-voltage rail-to-rail input range (−0.25V to VCC − 0.25V), and µMAX-8 package compatibility with high-density portable designs.

Technical Context

The MAX967EUA+ implements two independent comparators sharing a common HYST pin and REF output, enabling synchronized voltage monitoring with adjustable hysteresis up to ±50 mV. Its input stage supports full rail-to-rail common-mode operation down to 1.6V supply, while the open-drain outputs interface directly with pull-up voltages up to 6V - enabling level translation across mixed-voltage domains.

Internal bandgap reference stability (±1.5% at 0°C to +85°C) and low input offset voltage (≤6.0 mV over −40°C to +85°C in µMAX) ensure reliable trip-point accuracy in low-power sensing applications. Propagation delay is 10 µs (50 mV overdrive) with minimal temperature drift, and the device tolerates continuous short-circuit faults on all pins.

Key Specifications

Pinout & Package

The MAX967EUA+ is housed in an 8-pin µMAX® package (U8-1), measuring 3.0mm × 3.0mm × 1.1mm with exposed pad for thermal enhancement. This RoHS-compliant, surface-mount package supports high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX965EUA+, the MAX967EUA+ adds a second comparator with shared hysteresis and reference - enabling compact window detection without added passives. Versus TLV3692IDR, it delivers full integration (reference + hysteresis control) at higher quiescent current, reducing design time and validation effort for battery-sensitive applications.

Availability

The MAX967EUA+ is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, window comparators, threshold detectors, voltage-level translation, and ground/supply-sensing applications requiring stable component supply and long-term manufacturability.

Supply support for MAX967EUA+ 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, medical, and communications applications.

The MAX965–MAX970 family was engineered specifically for ultra-low-voltage, micropower sensing in portable and battery-operated systems - emphasizing rail-to-rail operation, integrated references, and minimal quiescent current without sacrificing accuracy or speed.

FAQ

What is the operating supply voltage range for the MAX967EUA+?

The MAX967EUA+ operates from a single supply of +1.6V to +5.5V across the full −40°C to +85°C temperature range. At 1.6V, it maintains full rail-to-rail input common-mode range and functional comparator operation, though propagation delay increases and output sink capability decreases below this voltage. The internal 1.235V reference remains stable above 1.6V.

Does the MAX967EUA+ require external components to use its internal reference?

No, the MAX967EUA+ provides a buffered 1.235V ±1.5% reference on the REF pin that can drive up to 50 µA. For optimal noise performance, Maxim recommends bypassing REF with a 0.1 µF capacitor to ground. No external resistors or trimming components are required to use the reference for threshold setting or hysteresis programming.

How is hysteresis programmed on the MAX967EUA+?

Hysteresis is programmed on the MAX967EUA+ by connecting two external resistors between REF, HYST, and GND. This creates a voltage divider that sets the HYST pin voltage between REF and (REF − 50 mV), yielding a hysteresis band from ±1 mV to ±50 mV. The same hysteresis value applies to both comparators, as HYST is shared. If not used, HYST must be tied to REF.

What package type is the MAX967EUA+ supplied in?

The MAX967EUA+ is supplied in an 8-pin µMAX® package (package code U8-1), measuring 3.0mm × 3.0mm × 1.1mm with an exposed thermal pad. This RoHS-compliant, surface-mount package is pin-compatible with other MAX965–MAX968 variants in µMAX-8 and supports high-density PCB layouts and reflow soldering.

Can the MAX967EUA+ outputs interface with 5V logic while operating from a 2.0V supply?

Yes, the MAX967EUA+ open-drain outputs are rated to 6V and can be pulled up to 5V logic rails even when VCC is as low as 1.6V. This enables true voltage-level translation: a 2.0V-supplied MAX967EUA+ can generate clean 0V/5V output signals compatible with standard TTL or CMOS inputs, eliminating need for discrete level shifters.