Analog Devices Inc./Maxim Integrated MAX9012ESA+T

Overview

MAX9012ESA+T from Maxim Integrated is a dual, high-speed, precision TTL comparator operating from a single 4.5V to 5.5V supply. It features 5ns typical propagation delay, 2.4mA quiescent current per channel, ±5.5mV input offset voltage (max), and rail-to-rail input capability extending 200mV below ground - ideal for zero-crossing detection and high-speed sampling in industrial timing and signal conditioning circuits.

For engineers reviewing the MAX9012ESA+T datasheet, MAX9012ESA+T pinout, MAX9012ESA+T application, or MAX9012ESA+T equivalent, key selection criteria include dual-channel propagation delay matching (≤500ps channel-to-channel skew), stable operation with slow-moving inputs, TTL-compatible outputs without external pull-ups, and guaranteed performance across –40°C to +85°C.

Technical Context

The MAX9012ESA+T implements a fully differential bipolar input stage with no built-in hysteresis, enabling high-resolution comparison near zero differential input without oscillation in the linear region. Its input common-mode range spans –0.2V to (VCC – 1.9V), supporting ground-referenced signals and low-voltage thresholds.

Each comparator channel delivers TTL-compatible output drive (VOH ≥ 2.4V at 4mA, VOL ≤ 0.6V at 4mA) with matched rise/fall times (tR = 3ns, tF = 2ns) and differential propagation delay ≤3ns. The device lacks latch or complementary output functionality - distinguishing it from MAX9011/MAX9013 variants.

Key Specifications

Pinout & Package

MAX9012ESA+T is housed in an 8-pin SO (Small Outline) package with exposed pad (SOIC-N), footprint compatible with industry-standard 150mil SOIC layouts. Pin 1 is marked with a dot; pin 1–4 are on the left side, pin 5–8 on the right (counting counterclockwise from pin 1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM393DR and TLV3502IDR, the MAX9012ESA+T uniquely combines 5ns speed, guaranteed –0.2V input capability, TTL push-pull outputs, and matched dual-channel timing - making it the only option among the three qualified for precision zero-crossing and high-speed dual-threshold sampling in industrial 5V systems.

Availability

MAX9012ESA+T is available at Aetrix Electronics and suitable for high-speed signal conditioning, precision timing, and industrial sensor interface applications requiring stable component supply and long-term production continuity.

Supply support for MAX9012ESA+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 computing markets.

The MAX9010–MAX9013 family was designed specifically for single-supply, high-speed comparator applications demanding precision, low power, and immunity to linear-region instability - targeting test equipment, motor control, and real-time signal processing.

FAQ

What is the maximum input frequency the MAX9012ESA+T can reliably process?

The MAX9012ESA+T supports reliable operation up to 200MHz for fast edge detection, validated by response to 50MHz ±10mV sine wave testing in the datasheet. Its 5ns propagation delay and stable linear-region behavior allow accurate timing decisions even with low-overdrive signals at these frequencies - unlike many comparators that require hysteresis or minimum slew rate.

Does the MAX9012ESA+T have a latch function or complementary outputs?

No. The MAX9012ESA+T does not include a latch enable (LE) input or complementary outputs. These features are exclusive to the MAX9011 and MAX9013 variants. The MAX9012ESA+T provides two independent, non-latching, single-ended TTL outputs (OUTA and OUTB) - confirmed by pin configuration tables and selector guide data.

Can the MAX9012ESA+T operate with input voltages below ground?

Yes. The MAX9012ESA+T guarantees correct operation with input voltages as low as –0.2V relative to GND, verified by absolute maximum ratings and common-mode input voltage specifications. This enables direct interfacing with ground-referenced AC signals and eliminates need for level-shifting circuitry in zero-crossing detector designs.

What is the recommended power supply bypassing for the MAX9012ESA+T?

A 0.1µF surface-mount ceramic capacitor must be placed between VCC (pin 5) and GND (pin 2), mounted within 2mm of the pins to minimize lead inductance. This is explicitly required in the Applications Information section to suppress supply noise and ensure stable high-speed switching performance across the –40°C to +85°C temperature range.

How does the MAX9012ESA+T handle slow-moving input signals?

The MAX9012ESA+T remains stable and avoids oscillation when driven with slow-moving or low-overdrive inputs - a key differentiator from conventional high-speed comparators. This is achieved via unique input amplifier design that eliminates the need for hysteresis, preserving resolution while enabling accurate DC-to-200MHz signal processing without output instability.