Analog Devices Inc./Maxim Integrated MAX900BEWP

Overview

MAX900BEWP from Maxim Integrated is a quad high-speed 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 and line receivers requiring precise timing discrimination.

For engineers reviewing the MAX900BEWP datasheet, MAX900BEWP pinout, MAX900BEWP application, or MAX900BEWP equivalent, this page provides verified electrical parameters, latch-timing behavior, dual-supply configuration guidance, and validated alternatives for legacy design support and obsolescence mitigation.

Technical Context

The MAX900BEWP implements four independent high-gain comparators with internal active pull-ups on TTL outputs and dedicated latch control inputs (LE1–LE4) that freeze output states on logic-low assertion. Its analog section operates from separate VCC/VEE rails (±5V or +5V/+10V with VEE = GND), while digital logic uses isolated VDD = +5V - enabling noise isolation in mixed-signal systems.

Propagation delay is guaranteed by design at 10ns max over full temperature (−40°C to +85°C) with 5mV input overdrive and 15pF load; response time matching between channels is controlled to ≤3ns difference (∆tpd), and latch disable delays (tpd+(D), tpd−(D)) are specified at 10ns and 12ns respectively under worst-case conditions.

Key Specifications

Pinout & Package

MAX900BEWP is housed in a 20-pin wide SOIC (SO) package with 0.3″ body width and standard 0.050″ lead pitch. Pin assignments follow the MAX900 family layout optimized for signal integrity in high-speed comparator applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX900BEWP, MAX9202BEWP offers identical form-factor and timing but halves power consumption, while LM339MTX/NOPB trades speed and latch capability for cost and availability - making it unsuitable for high-speed sampling but viable for basic level detection.

Availability

MAX900BEWP is available at Aetrix Electronics and suitable for high-speed data sampling, industrial line receivers, and precision threshold detection requiring stable component supply during extended product lifecycles.

Supply support for MAX900BEWP 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 family was designed for high-speed data acquisition systems requiring nanosecond-level timing precision, latch-controlled sampling, and robust operation across industrial temperature ranges.

FAQ

What is the operating temperature range for MAX900BEWP?

The MAX900BEWP is rated for −40°C to +85°C operation, meeting industrial-grade environmental requirements. This extended range is confirmed in the official ordering information table and supported by full-temperature electrical specifications including input offset voltage (2–6mV), propagation delay (10–15ns), and supply current (ICC/IEE/IDD) across the range.

Does MAX900BEWP support single-supply operation?

Yes, MAX900BEWP supports single-supply operation with VEE grounded and VCC set between +5V and +10V. The input common-mode range extends to the negative rail (VEE − 0.1V), enabling ground-referenced sensing. Digital supply VDD remains fixed at +5V, and all timing and output specifications are validated under this configuration.

Is MAX900BEWP pin-compatible with MAX9202BEWP?

Yes, MAX900BEWP and MAX9202BEWP share identical 20-pin wide SO packaging, pin numbering, and pin functions - including IN+, IN−, OUT, LATCH, VCC, VEE, VDD, and GND assignments. This pin-for-pin compatibility is explicitly stated in Maxim's replacement guidance and confirmed in both devices' pin configuration diagrams.

What is the maximum load capacitance MAX900BEWP can drive while maintaining 10ns propagation delay?

MAX900BEWP maintains its 10ns max propagation delay specification with CL = 15pF, as defined in the Timing Characteristics table. Response time degrades with increasing load capacitance - e.g., tpd increases to ~14ns at 50pF (per Figure toc08). For designs requiring strict <12ns delay, total node capacitance (including PCB trace and scope probe) must remain ≤15pF.

Why does MAX900BEWP require separate VCC and VDD supplies?

MAX900BEWP separates analog (VCC/VEE) and digital (VDD) supplies to isolate sensitive comparator circuitry from digital switching noise. VCC powers the high-gain analog core, while VDD exclusively powers latch logic and TTL output drivers. This architecture minimizes supply-induced offset drift and ensures stable threshold detection in mixed-signal environments - a requirement validated in Figures 1A–1C and Applications Information.