Analog Devices Inc./Maxim Integrated MAX976EUA

Overview

MAX976EUA from Maxim Integrated is a dual, high-speed, low-power comparator optimized for +3V/+5V single-supply operation in space-constrained applications. It delivers 20ns propagation delay, 225µA supply current per comparator, and rail-to-rail output capability - enabling direct interface with CMOS/TTL logic in battery-powered threshold detection circuits.

For engineers reviewing the MAX976EUA datasheet, MAX976EUA pinout, MAX976EUA application, or MAX976EUA equivalent, key selection criteria include its 8-pin µMAX® package, ground-sensing inputs (–0.2V to V_CC–1.2V), internal hysteresis (0.5–4.0mV input-referred), shutdown compatibility via external control (shared with MAX998), and guaranteed –40°C to +85°C operation.

Technical Context

The MAX976EUA implements a CMOS-based dual comparator architecture with push-pull rail-to-rail outputs and internally generated hysteresis to suppress noise-induced oscillation during slow input transitions. Its input stage supports common-mode voltages extending 200mV below ground, enabling true ground-referenced sensing without level-shifting circuitry.

Each comparator operates independently with matched propagation delay (Δt_PD ≤ 1ns) and low skew (t_SKEW ≤ 2ns), supporting precise timing-critical functions such as window detection and digital line reception. The device tolerates continuous short-circuit faults to either rail and exhibits 66dB CMRR and 63dB PSRR at V_CC = 5V.

Key Specifications

Pinout & Package

MAX976EUA is housed in an 8-pin µMAX® package (pin-compatible with SO-8 but 50% smaller footprint), specified for –40°C to +85°C operation and RoHS-compliant (suffix "+").

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed comparator applications.

Compared with LM393DR and TLV3501CDR, MAX976EUA uniquely balances nanosecond-speed response (20ns), ultra-low power (225µA), rail-to-rail drive, and ground-sensing capability in a miniature µMAX package - making it optimal for battery-constrained, space-limited, high-fidelity threshold detection.

Availability

MAX976EUA is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, digital line receivers, and 3V industrial sensor interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MAX976EUA 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 demanding industrial, medical, and communications applications.

The MAX976EUA belongs to Maxim's high-speed comparator product line, engineered specifically for low-voltage, low-power, single-supply systems where speed, accuracy, and small size are simultaneously critical.

FAQ

What is the operating temperature range for MAX976EUA?

The MAX976EUA is fully specified and guaranteed over the industrial temperature range of –40°C to +85°C. All electrical parameters - including propagation delay, supply current, input offset voltage, and common-mode range - are validated across this range per the datasheet's Absolute Maximum Ratings and Electrical Characteristics tables.

Does MAX976EUA support shutdown mode like MAX998?

No, MAX976EUA does not include a shutdown pin or function. Shutdown capability is exclusive to the MAX998 (SOT23-6) variant, which features a dedicated SHDN input that reduces supply current to 1nA. The MAX976EUA remains active whenever powered and has no internal power-gating mechanism.

Can MAX976EUA inputs be driven below ground?

Yes - the MAX976EUA inputs support a common-mode voltage range extending to –0.2V (200mV below ground), enabling direct interface with ground-referenced sensors, photodiodes, or signals with negative excursions, provided the absolute maximum rating (–0.3V) is not exceeded.

What is the package type and footprint compatibility of MAX976EUA?

MAX976EUA uses the 8-pin µMAX® package (outline 21-0036), a proprietary Maxim footprint 50% smaller than standard SO-8. It is not pin-compatible with SO-8; layout requires the specific µMAX land pattern (90-0092) and thermal pad design per Maxim's package documentation.

How does internal hysteresis affect MAX976EUA's threshold accuracy?

MAX976EUA's internal hysteresis (0.5–4.0mV input-referred) creates two distinct trip points - one for rising and one for falling inputs - preventing oscillation on slow or noisy signals. This adds controlled uncertainty to the effective threshold but eliminates need for external hysteresis networks and improves robustness in real-world conditions.