Analog Devices Inc./Maxim Integrated MAX912EPE+

Overview

MAX912EPE+ from Maxim Integrated is a dual, ultra-fast, low-power precision TTL comparator with differential inputs and complementary TTL outputs, 10ns typical propagation delay, ±5V or single +5V supply operation, and stable linear-region behavior-ideal for high-speed switching regulators and zero-crossing detection in industrial power systems.

For engineers reviewing the MAX912EPE+ datasheet, MAX912EPE+ pinout, MAX912EPE+ application, or MAX912EPE+ equivalent, this page delivers verified electrical specs, latch-enabled dual-channel timing behavior, input voltage range extending below negative rail, and real-world design implications for V/F converters and Ethernet line receivers.

Technical Context

The MAX912EPE+ integrates two independent high-speed comparators with fully differential input amplifiers trimmed to ≤0.8mV offset at +25°C, common-mode input range from −5.2V to +3.5V (±5V supplies), and no built-in hysteresis-enabling full-resolution detection of slow-moving signals without oscillation in the linear region.

Each channel features TTL-compatible latch control (LEA/LEB) that freezes output state when asserted high or floating, with transparent operation when low; propagation delay is guaranteed ≤16ns over −40°C to +85°C, and differential delay between channels is ≤500ps, supporting precise timing alignment in dual-signal monitoring.

Key Specifications

Pinout & Package

MAX912EPE+ is housed in a 16-pin plastic DIP package (0.300" wide), with through-hole mounting, lead spacing of 0.100", and thermal dissipation rating of 842mW at +70°C (derated 10.53mW/°C above).

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 MAX912EPE+ uniquely combines nanosecond timing, dual-channel latch control, and true TTL outputs in one 16-pin DIP-making it irreplaceable in applications requiring synchronized, jitter-free capture of two high-speed analog events.

Availability

MAX912EPE+ is available at Aetrix Electronics and suitable for industrial power conversion, precision instrumentation, and communications infrastructure requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for MAX912EPE+ 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 industrial, automotive, and communications applications, with emphasis on performance, integration, and reliability.

The MAX912EPE+ belongs to Maxim's high-speed comparator product line, engineered specifically for applications demanding nanosecond timing accuracy, latch-synchronized dual-channel operation, and robustness across extended industrial temperatures.

FAQ

What is the operating temperature range for MAX912EPE+?

The MAX912EPE+ is rated for −40°C to +85°C operation, as confirmed by its "E" grade designation in the ordering information table. This extended temperature range supports deployment in industrial motor drives, outdoor telecom equipment, and automotive under-hood modules where ambient conditions exceed commercial-grade limits. The MAX912EPE+ maintains full specification compliance-including 16ns max propagation delay and ≤3mV input offset-across this entire range.

Does MAX912EPE+ require external hysteresis for stable operation?

No, the MAX912EPE+ does not require external hysteresis. Its unique internal architecture ensures stable output behavior even when input signals dwell in the linear region-unlike many high-speed comparators that oscillate near zero-crossing. Adding hysteresis would degrade resolution, as shown in Figure 2 of the datasheet. The MAX912EPE+ achieves full millivolt-level resolution without trade-offs, making it ideal for precision V/F converters and slow-moving waveform detection.

Can MAX912EPE+ operate from a single +5V supply?

Yes, the MAX912EPE+ supports single +5V supply operation: connect V− to GND and V+ to +5V. In this configuration, the common-mode input range is −0.2V to +3.5V, allowing interface with ground-referenced sensors and op-amps. The device draws 6–10mA per comparator and delivers full TTL output swing (VOH ≥ 2.4V, VOL ≤ 0.4V), eliminating need for level shifters in 5V logic systems.

What is the function of pins 5 and 12 (N.C.) on MAX912EPE+?

Pins 5 and 12 on the MAX912EPE+ are designated N.C. (No Connection) and are not internally bonded or connected to any circuit node. These pins must remain unconnected-neither grounded nor tied to supply rails. Routing traces or placing vias on these pads may introduce parasitic coupling or mechanical stress, potentially affecting latch timing integrity or long-term reliability. The MAX912EPE+ pinout explicitly reserves them for mechanical symmetry and package compatibility.

How does the latch function work on MAX912EPE+?

The MAX912EPE+ provides independent latch enable inputs (LEA on pin 4, LEB on pin 13): when either is held high or left floating, the corresponding comparator's output (QA/QA or QB/QB) holds its last valid state; when pulled low, the output becomes transparent and tracks the instantaneous differential input. This enables synchronized sampling of two analog signals using a shared clock, with setup/hold times of 2ns and 5ns respectively-critical for time-aligned measurements in motor control or data acquisition.