Analog Devices Inc./Maxim Integrated MAX987EUK-T

Overview

MAX987EUK-T from Maxim Integrated is a single-channel, micropower, rail-to-rail input/output comparator with push-pull output stage, operating from +2.5V to +5.5V supply, delivering 120ns propagation delay, 48μA quiescent current per comparator, and ±0.5mV typical input offset voltage - used in precision threshold detection and zero-crossing circuits in portable instrumentation.

For engineers reviewing the MAX987EUK-T datasheet, MAX987EUK-T pinout, MAX987EUK-T application, or MAX987EUK-T equivalent, key selection considerations include its SC70-5 package footprint, push-pull 8mA drive capability, rail-to-rail common-mode range extending 250mV beyond rails, and guaranteed -40°C to +85°C operation without phase reversal on overdriven inputs.

Technical Context

The MAX987EUK-T implements a high-speed, low-noise input stage with 1.0pA typical input bias current and internal ±2.5mV hysteresis, enabling clean switching even with slow-moving signals. Its push-pull output stage sources and sinks up to 8mA while maintaining rail-to-rail swing and minimizing supply-current surges during transitions.

This architecture eliminates typical supply glitches seen in conventional comparators, achieving only ~100μA total supply current at 1MHz switching frequency. The device supports single-supply operation down to +2.5V and features no phase reversal when inputs exceed rails by up to 0.3V.

Key Specifications

Pinout & Package

MAX987EUK-T is housed in a 5-pin SC70-5 package (package code X5-1, top mark ABM), measuring 2.0mm × 1.25mm × 0.9mm with 0.65mm lead pitch. This ultra-compact outline supports high-density PCB layouts in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3701DBVR and LMV7215M5X, the MAX987EUK-T delivers superior combination of speed (120ns), ultra-low power (48μA), and precision (±0.5mV offset), making it optimal for space- and energy-constrained high-fidelity threshold detection where both responsiveness and accuracy are critical.

Availability

MAX987EUK-T is available at Aetrix Electronics and suitable for portable threshold detection, zero-crossing sensing, logic-level translation, and IR receiver front-end applications requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.

Supply support for MAX987EUK-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX987 series belongs to Maxim's precision micropower comparator product line, designed specifically for battery-operated and space-constrained systems demanding rail-to-rail operation, low propagation delay, and guaranteed performance across -40°C to +85°C.

FAQ

What is the maximum capacitive load the MAX987EUK-T can drive while maintaining 120ns propagation delay?

The MAX987EUK-T maintains ≤120ns propagation delay (at 100mV overdrive, VCC = 5V) for capacitive loads up to 15pF. At 50pF, delay increases to 20ns; at 200pF, it rises to 40ns. For loads >50pF, consider adding a buffer stage or reducing trace capacitance to preserve timing integrity in the MAX987EUK-T circuit.

Does the MAX987EUK-T require external hysteresis for reliable operation with noisy input signals?

No - the MAX987EUK-T includes ±2.5mV internal hysteresis, which prevents output chatter on slow or noisy inputs. This built-in hysteresis eliminates the need for external positive-feedback resistors in most threshold-detection applications, simplifying design and reducing component count for the MAX987EUK-T.

Can the MAX987EUK-T operate from a 2.5V supply while maintaining full rail-to-rail input common-mode range?

Yes - the MAX987EUK-T supports VCC as low as +2.5V and guarantees a common-mode input range from VEE − 0.25V to VCC + 0.25V. At 2.5V supply, inputs may swing from −0.25V to +2.75V, enabling direct interfacing with transducers or sensors operating beyond the supply rails in the MAX987EUK-T application.

What is the absolute maximum voltage allowed on the MAX987EUK-T output pin when used in push-pull mode?

When configured as a push-pull output (as in the MAX987EUK-T), the OUT pin must remain within −0.3V to (VCC + 0.3V). Exceeding these limits risks latch-up or permanent damage. This constraint applies regardless of load condition and must be respected in all MAX987EUK-T designs involving inductive or capacitive transient coupling.

Is the MAX987EUK-T pin-compatible with other comparators in the MAX987/MAX988 family?

Yes - the MAX987EUK-T shares identical 5-pin SC70-5 pinout and footprint with MAX988EUK-T. However, MAX988EUK-T has an open-drain output requiring an external pull-up, whereas MAX987EUK-T uses push-pull. Swapping them requires schematic and layout review to verify output-stage compatibility in the MAX987EUK-T system.