Analog Devices Inc./Maxim Integrated MAX9693ESE+

Overview

MAX9693ESE+ from Maxim Integrated is a dual ultra-fast ECL-output comparator with latch-enable functionality, designed for high-frequency signal conditioning in timing-critical systems. It delivers 1.2ns typical propagation delay, 100ps channel-to-channel propagation match, and operates from +5V/-5.2V supplies. Its complementary ECL outputs drive 50Ω-terminated transmission lines and support >600MHz signal processing in applications such as high-speed line receivers and peak detectors.

For engineers reviewing the MAX9693ESE+ datasheet, MAX9693ESE+ pinout, MAX9693ESE+ application, or MAX9693ESE+ equivalent, key selection considerations include latch-enable timing (0.5ns setup/hold), differential input voltage range (–2.5V to +3.0V), ECL-compatible output swing (–1.89V to –0.76V), and dual-channel matching performance critical for synchronous sampling and time-interleaved architectures.

Technical Context

The MAX9693ESE+ implements two independent high-speed comparators sharing common power rails and ground, each with dedicated latch-enable inputs (LEA/LEB) and complementary ECL outputs (Q/Q̅). Its BiCMOS process enables sub-2ns propagation while maintaining DC precision: ±11.5mV input offset voltage and 80dB CMRR over –40°C to +85°C.

Each comparator features open-emitter outputs requiring external pull-down resistors (50Ω–200Ω to –2.0V or 240Ω–2000Ω to –5.2V), and supports sample-hold operation via ECL-level latch-enable control. Input common-mode range spans –2.5V to +3.0V, enabling direct interfacing with ECL, PECL, and LVDS sources without level-shifting.

Key Specifications

Pinout & Package

MAX9693ESE+ is housed in a 16-pin narrow SO package (SOIC-16, 150mil width) with exposed pad for thermal enhancement. Pin 1 is marked by notch or dot; pin numbering follows standard SOIC convention counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9693ESE+, MAX9692ESE+ offers identical speed and timing but halves channel count and pin count, while ADCMP572BCPZ-R7 trades ECL compatibility and latch-enable for lower-voltage CML operation - making MAX9693ESE+ uniquely suited for dual-channel, latch-synchronized, legacy ECL infrastructure.

Availability

MAX9693ESE+ is available at Aetrix Electronics and suitable for high-speed test equipment, optical line receivers, radar signal processors, and precision timing instruments requiring stable component supply across extended temperature ranges.

Supply support for MAX9693ESE+ 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 demanding industrial, communications, and computing applications.

The MAX969x family targets ultra-high-speed signal acquisition and conditioning, specifically engineered for ECL-system integration where sub-nanosecond timing, dual-channel synchronization, and latch-controlled sampling are mandatory.

FAQ

What is the operating temperature range for MAX9693ESE+?

The MAX9693ESE+ is specified for continuous operation from –40°C to +85°C. All electrical characteristics-including propagation delay (2.0ns max), input offset voltage (±11.5mV), and latch timing (0.5ns setup)-are guaranteed across this full industrial temperature range. Thermal derating applies above +70°C, with 9.6mW/°C reduction in power dissipation for the 16-pin QSOP/SO package.

How should unused latch-enable inputs be terminated on MAX9693ESE+?

For unused latch-enable inputs on MAX9693ESE+, the true LE pin (e.g., LEA or LEB) must be connected to ground (VEE = –5.2V), while its complementary LE pin (LEA or LEB) must be tied to an ECL-high logic level (–0.99V to –0.70V). Leaving either input floating violates absolute maximum ratings and risks undefined output states or increased power consumption.

Does MAX9693ESE+ require external pull-down resistors on its outputs?

Yes, MAX9693ESE+ features open-emitter ECL outputs and requires external pull-down resistors. For –2.0V termination, use 50Ω–200Ω; for –5.2V termination, use 240Ω–2000Ω. These resistors establish valid ECL logic levels (VOH = –0.76V min, VOL = –1.89V max) and match 50Ω transmission lines-omitting them results in non-functional outputs.

What is the input common-mode voltage range of MAX9693ESE+?

The MAX9693ESE+ accepts differential input signals with a common-mode voltage range of –2.5V to +3.0V, referenced to VEE (–5.2V) and VCC (+5V). This wide range supports direct connection to ECL, PECL, and LVDS sources without level-shifting circuitry, and remains valid across the full –40°C to +85°C operating temperature range.

Can MAX9693ESE+ be used in single-supply configurations?

No, MAX9693ESE+ requires dual supplies: +5V (VCC) and –5.2V (VEE). Its internal BiCMOS architecture and ECL output stage depend on this split-rail configuration to achieve specified propagation delay, output swing, and input common-mode range. Attempting single-supply operation violates absolute maximum ratings and will damage the device or yield nonfunctional behavior.