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 industrial and portable systems. It delivers 20ns propagation delay, 225µA supply current per comparator, rail-to-rail push-pull outputs, and ground-sensing inputs (–0.2V to VCC – 1.2V), 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 shutdown capability (not supported on MAX976EUA+), input offset voltage (±2mV max), common-mode range extension below ground, and µMAX-8 package compatibility with tight PCB layouts.

Technical Context

The MAX976EUA+ implements a CMOS-input, push-pull output architecture with internal hysteresis (0.5–4.0mV input-referred) to suppress noise-induced oscillation during slow input transitions. Its input stage operates over –0.2V to (VCC – 1.2V), allowing true ground-referenced sensing without level-shifting circuitry.

Each comparator channel features matched propagation delay (ΔtPD ≤ 1ns), low skew (tSKEW ≤ 2ns), and full rail-to-rail output swing (VOH ≥ VCC – 0.4V, VOL ≤ 0.4V at 2mA) across the full –40°C to +85°C temperature range and 2.7V–5.5V supply range.

Key Specifications

Pinout & Package

MAX976EUA+ is housed in an 8-pin µMAX® package (pin-compatible with SO-8 but 30% smaller footprint), with exposed pad for thermal enhancement. The package supports reflow soldering per JEDEC J-STD-020 and is 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, the MAX976EUA+ uniquely balances speed (20ns), ultra-low power (225µA), ground-sensing inputs, and integrated hysteresis in a compact µMAX package-making it optimal for portable, battery-constrained, and space-limited 3V/5V systems requiring robust, low-component-count threshold detection.

Availability

MAX976EUA+ is available at Aetrix Electronics and suitable for battery-powered systems, IR receivers, and 3V digital interface applications 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX976EUA+ belongs to Maxim's high-speed comparator product line, designed specifically for single-supply, low-power, ground-referenced sensing in portable and space-constrained systems.

FAQ

Does MAX976EUA+ support shutdown mode?

No, the MAX976EUA+ does not include a shutdown feature. Shutdown functionality is exclusive to the MAX998 (SOT23-6) variant, which uses the SHDN pin to reduce supply current to 1nA. The MAX976EUA+ is a dual comparator without enable/disable control; all channels remain active whenever powered.

What is the maximum input voltage allowed on the IN+ and IN– pins of MAX976EUA+?

The MAX976EUA+ input pins tolerate voltages from –0.3V to (VCC + 0.3V) continuously, per Absolute Maximum Ratings. Within normal operation, the common-mode input range is specified as –0.2V to (VCC – 1.2V); applying voltages outside this range may cause unpredictable output behavior but will not damage the device if within absolute limits.

Can MAX976EUA+ drive standard TTL or CMOS logic directly?

Yes, the MAX976EUA+ can drive standard TTL and CMOS logic directly. Its rail-to-rail push-pull outputs deliver VOH ≥ VCC – 0.4V and VOL ≤ 0.4V at 2mA load, meeting TTL high-level (>2.4V at 5V) and CMOS VIH/VIL requirements across its 2.7V–5.5V supply range without external pull-up resistors.

Is the µMAX package of MAX976EUA+ pin-compatible with SO-8 footprints?

No, the µMAX-8 package of MAX976EUA+ is not pin-compatible with standard SO-8. While both have 8 leads, the µMAX has a 3mm × 3mm body, 0.5mm lead pitch, and different pin spacing versus SO-8 (3.9mm × 4.9mm, 1.27mm pitch). A dedicated µMAX land pattern (Maxim drawing 90-0092) must be used.

What is the typical input bias current of MAX976EUA+ over temperature?

The MAX976EUA+ exhibits typical input bias current of 75nA at +25°C, rising to ≤300nA over the full –40°C to +85°C operating range. This low bias current minimizes voltage errors in high-impedance sensor interfaces, such as those using photodiodes or precision resistor dividers.