Analog Devices Inc./Maxim Integrated MAX902EPD+

Overview

MAX902EPD+ from Maxim Integrated is a high-speed, low-power quad voltage comparator with differential analog inputs, TTL-compatible outputs, and independent latch inputs per channel. It delivers 8ns typical propagation delay at 5mV overdrive, consumes 18mW per comparator at +5V, and supports ±5V or +5V-to-+10V analog supplies with input common-mode range extending to the negative rail. It is used in high-speed A/D converters, line receivers, and PWM circuits.

For engineers reviewing the MAX902EPD+ datasheet, MAX902EPD+ pinout, MAX902EPD+ application, or MAX902EPD+ equivalent, key selection considerations include latch-enabled output hold timing (tpd+(D) = 10ns typ), dual-supply isolation capability (separate VCC/VEE analog and VDD digital rails), and guaranteed operation across –40°C to +85°C industrial temperature range.

Technical Context

The MAX902EPD+ implements four independent high-gain comparators with internal pull-up on TTL outputs and dedicated latch inputs (LATCH A–D) that freeze output states on logic-low assertion. Its analog input stage accepts common-mode voltages from VEE − 0.1V to VCC − 2.25V, enabling ground-sensing operation with single +5V supply (VEE = GND).

Propagation delay is tightly controlled (tpd+ = tpd− = 10ns typ at full temperature range, 5mV overdrive, CL = 15pF), and timing skew between channels is limited to ∆tpd ≤ 3ns. Latch timing parameters-including minimum setup time (ts = 2ns), hold time (th = 1ns), and disable pulse width (tpw(D) = 10ns)-are specified for reliable synchronous sampling in mixed-signal systems.

Key Specifications

Pinout & Package

MAX902EPD+ is housed in a 14-pin plastic DIP package (0.300" wide) with through-hole mounting and industry-standard lead pitch. Pin 1 is marked by a notch or dot; pin numbering follows standard DIP convention (counterclockwise from top-left corner).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad voltage comparator applications.

Compared with MAX902EPD+, MAX9202ESD+ offers identical functionality at half the power and same speed, making it the preferred drop-in replacement for new designs; LM339MTX/NOPB provides broader supply tolerance and lower cost but lacks latch control and cannot support >1MHz sampling rates due to µs-scale delays.

Availability

MAX902EPD+ is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX902EPD+ 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 applications.

The MAX900–MAX903 family was designed specifically for high-speed data acquisition and real-time signal conditioning, emphasizing low propagation delay, latch-synchronized output capture, and robust dual-supply operation in noise-sensitive environments.

FAQ

What is the operating temperature range for MAX902EPD+?

The MAX902EPD+ is rated for –40°C to +85°C operation, qualifying it for industrial control, instrumentation, and automotive auxiliary systems. This extended range is confirmed in the Ordering Information table and supported by full-temperature electrical specifications including input offset voltage (1–6mV), propagation delay (10–15ns), and supply current limits across the span.

Does MAX902EPD+ support single-supply operation?

Yes, MAX902EPD+ supports single-supply operation with VEE tied to GND and VCC set to +5V to +10V. Its input common-mode range extends to VEE − 0.1V, enabling ground-referenced inputs without level-shifting. The datasheet explicitly confirms this in Figure 1A and the "Flexible Analog Supply" feature bullet.

How many latch inputs does MAX902EPD+ have, and what do they control?

MAX902EPD+ has four dedicated latch inputs (pins 4, 5, 12, 13), one per comparator channel (A–D). When driven low, each latch freezes its corresponding comparator output state; when high, the comparator operates transparently. This is documented in the Pin Descriptions table and Timing Diagram (Figure 2).

What is the maximum load capacitance MAX902EPD+ can drive while maintaining 10ns propagation delay?

MAX902EPD+ maintains 10ns typical propagation delay with CL = 15pF, as specified in the TIMING CHARACTERISTICS table. Performance degrades with higher capacitance: Figure MAX900-03 toc08 shows tpd increasing to ~14ns at 50pF. For reliable 10ns operation, keep total node capacitance ≤15pF using short traces and minimal stubs.

Is MAX902EPD+ pin-compatible with other devices in the MAX900–MAX903 family?

MAX902EPD+ uses a 14-pin DIP package, distinct from the 20-pin MAX900, 16-pin MAX901, and 8-pin MAX903. While functionally similar (quad comparator with latches), it is not pin-compatible with those variants. Pin compatibility exists only within the MAX902 series (e.g., MAX902CPD, MAX902ESD share identical 14-pin mapping).