Analog Devices Inc./Maxim Integrated MAX987EUK+TG103

Overview

MAX987EUK+TG103 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. It is used in portable battery-powered zero-crossing detectors and threshold discriminators where low power and fast response are critical.

For engineers reviewing the MAX987EUK+TG103 datasheet, MAX987EUK+TG103 pinout, MAX987EUK+TG103 application, or MAX987EUK+TG103 equivalent, key selection criteria include its SC70-5 package footprint, push-pull 8mA output drive capability, rail-to-rail common-mode range extending 250mV beyond rails, and guaranteed operation from –40°C to +85°C.

Technical Context

The MAX987EUK+TG103 implements a high-speed, low-noise input stage with 1.0pA typical input bias current and internal ±2.5mV hysteresis to prevent chatter on slow-moving signals. Its push-pull output stage actively sources and sinks up to 8mA while maintaining rail-to-rail swing - eliminating need for external pull-up resistors.

Supply-current surges during switching are minimized by a unique output architecture, reducing supply glitches and enabling stable operation without large decoupling capacitors. The device supports single-supply operation only (no dual-supply configuration), with VEE tied to ground in standard use.

Key Specifications

Pinout & Package

The MAX987EUK+TG103 is housed in a 5-pin SC70-5 (X5-1) package, measuring 2.0mm × 1.25mm × 0.9mm, optimized for 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+TG103 uniquely balances 120ns speed, 48μA quiescent current, built-in hysteresis, and 8mA push-pull drive in SC70 - making it optimal for space- and power-constrained real-time detection where reliability and simplicity are prioritized.

Availability

MAX987EUK+TG103 is available at Aetrix Electronics and suitable for portable/battery-powered systems, zero-crossing detectors, and threshold discriminators requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX987EUK+TG103 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 MAX987EUK+TG103 belongs to Maxim's micropower comparator family designed for ultra-low-power, high-speed sensing in battery-operated and space-constrained systems - emphasizing rail-to-rail operation, minimal supply disturbance, and guaranteed performance across –40°C to +85°C.

FAQ

What is the maximum capacitive load the MAX987EUK+TG103 can drive while maintaining 120ns propagation delay?

The MAX987EUK+TG103 maintains ≤120ns propagation delay for input overdrive ≥100mV with capacitive loads up to 50pF at VCC = 5V. At 200pF, delay increases to 40ns for rise/fall times but propagation delay remains ≤120ns under same overdrive conditions. For loads >100pF, consider adding a buffer stage to preserve timing integrity in the MAX987EUK+TG103 signal path.

Does the MAX987EUK+TG103 support dual-supply operation, and what are the limits?

Yes, the MAX987EUK+TG103 supports dual-supply operation from ±1.25V to ±2.75V (i.e., total supply ≤6V). In dual mode, VCC connects to positive rail and VEE to negative rail; common-mode range extends from VEE −0.25V to VCC +0.25V. The MAX987EUK+TG103 is not rated for asymmetric supplies exceeding these limits - doing so may cause parametric degradation or damage.

Can the MAX987EUK+TG103 be used with input voltages beyond the supply rails, and what protection exists?

Yes - the MAX987EUK+TG103 allows input voltages up to 0.3V beyond either supply rail (VEE −0.3V to VCC +0.3V) without phase reversal. Internal ESD diodes clamp inputs to rails, limiting input current to ±20mA absolute maximum. For sustained overvoltage, external series resistors are recommended to keep current within safe limits and prevent latch-up in the MAX987EUK+TG103.

What is the output voltage swing capability of the MAX987EUK+TG103 under 8mA load?

At VCC = 5V and ISINK = 8mA, the MAX987EUK+TG103 guarantees VOL ≤ 0.55V over temperature (–40°C to +85°C); at VCC = 2.7V and ISINK = 3.5mA, VOL ≤ 0.4V. For sourcing, VOH ≥ 4.45V (VCC = 5V, ISOURCE = 8mA) and ≥2.3V (VCC = 2.7V, ISOURCE = 3.5mA). This rail-to-rail swing enables direct interfacing with 5V/3.3V logic families without level shifters in the MAX987EUK+TG103 output stage.

Is the MAX987EUK+TG103 pin-compatible with other variants in the MAX987/MAX988 family?

Yes - the MAX987EUK+TG103 shares identical 5-pin SC70-5 pinout and footprint with MAX988EXK-T (open-drain version), enabling drop-in replacement where push-pull vs. open-drain functionality permits. However, MAX987EUK+TG103 must not replace MAX988 variants in level-translator applications requiring external pull-up, as its push-pull output would short the pull-up node - confirming functional compatibility is essential before substitution in the MAX987EUK+TG103 design.