Analog Devices Inc./Maxim Integrated MAX9693EEE

Overview

The MAX9693EEE from Maxim Integrated is a dual ultra-fast ECL-output comparator with latch-enable functionality, designed for high-speed signal acquisition and timing-critical sampling in >600MHz systems. It features 1.2ns typical propagation delay, 100ps channel-to-channel propagation match, and operates from +5V/-5.2V supplies in a 16-pin QSOP package.

For engineers reviewing the MAX9693EEE datasheet, MAX9693EEE pinout, MAX9693EEE application, or MAX9693EEE equivalent, key selection criteria include latch-enable timing (0.5ns setup/hold), ECL-compatible differential inputs, open-emitter outputs requiring external pull-down resistors, and dual-channel matching for synchronous sampling.

Technical Context

The MAX9693EEE implements two independent high-speed comparators sharing common supply rails (+5V VCC, -5.2V VEE) and ground. Each channel includes fully differential ECL-level inputs, complementary open-emitter outputs, and dedicated latch-enable (LEA/LEB) inputs with defined logic thresholds (VIH = -1.1V, VIL = -1.5V).

Its BiCMOS process enables sub-2ns propagation delay while maintaining DC precision: input offset voltage ±11.5mV over temperature, 60dB PSRR, and 80dB CMRR. The device requires external 50Ω–200Ω pull-down resistors to -2V or 240Ω–2000Ω to -5.2V for proper ECL output termination.

Key Specifications

Pinout & Package

The MAX9693EEE is housed in a 16-pin QSOP (E16+1) package with 0.65mm pitch, RoHS-compliant, and thermally rated for -40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX9693ESE, the MAX9693EEE offers identical performance in a smaller QSOP footprint; versus LMH7322MA, it delivers true ECL interfacing, dual-channel matching, and integrated latch-enable-critical for synchronous sampling in RF and test instrumentation.

Availability

MAX9693EEE is available at Aetrix Electronics and suitable for high-speed line receivers, peak detectors, threshold detectors, and high-speed triggers requiring stable component supply across industrial, test & measurement, and communications equipment lifecycles.

Supply support for MAX9693EEE 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 performance applications including communications, industrial, and automotive systems.

The MAX9691/MAX9692/MAX9693 family was developed specifically for ultra-high-speed signal conditioning where sub-2ns timing accuracy, ECL compatibility, and dual-channel coherence are mandatory-targeting RF test gear, optical receivers, and high-end oscilloscopes.

FAQ

What power supply configuration does the MAX9693EEE require?

The MAX9693EEE requires dual supplies: +5V on VCC (Pin 6) and -5.2V on VEE (Pin 11). These voltages are essential for ECL-level operation and must be bypassed with 0.1µF ceramic capacitors placed near the pins. The device draws up to 50mA total supply current across both channels at full operation, and its BiCMOS process ensures stable performance across the -40°C to +85°C industrial temperature range.

How are the open-emitter outputs of the MAX9693EEE terminated?

The MAX9693EEE's Q and Q̅ outputs are open-emitter and require external pull-down resistors to establish valid ECL logic levels. For VT = -2V operation, use 50Ω–200Ω resistors; for VT = -5.2V, use 240Ω–2000Ω. Pull-down placement must be close to the output pins to minimize parasitic inductance, and microstrip routing is recommended to preserve signal integrity above 600MHz. Incorrect termination causes undefined output states or excessive propagation skew.

What is the function of the differential latch-enable inputs on the MAX9693EEE?

The MAX9693EEE uses differential latch-enable pairs (LEA/LEA and LEB/LEB) to provide noise-immune sampling control. When the differential pair is driven low (ECL logic low), the corresponding comparator channel latches its output state; when high, it operates in normal comparison mode. This architecture prevents false triggering from common-mode noise and ensures deterministic hold behavior-critical for precise timing in applications like peak detection and high-speed triggering where the MAX9693EEE is deployed.

Does the MAX9693EEE support independent operation of its two comparator channels?

Yes, the MAX9693EEE supports fully independent operation: Channel A (Pins 7–8, 12–13, 1–2) and Channel B (Pins 9–10, 4–5, 15–16) have separate differential inputs, latch-enable controls, and outputs. No shared internal nodes exist between channels beyond common VCC, VEE, and GND. This independence allows simultaneous processing of unrelated signals-for example, one channel detecting a clock edge while the other captures data validity-without crosstalk or timing interference in the MAX9693EEE.

What layout considerations are critical for stable operation of the MAX9693EEE?

A solid ground plane, 0.1µF ceramic decoupling capacitors placed directly at VCC and VEE pins, and microstrip routing for all high-speed signals are mandatory for MAX9693EEE stability. Input traces must be impedance-controlled and matched; unused comparator inputs must be terminated-not left floating-to prevent oscillation. Poor layout increases minimum required input slew rate and can induce ringing or false switching. These constraints are documented in the MAX9693EEE datasheet's Applications Information section and directly impact achievable 600MHz+ performance.