Analog Devices Inc./Maxim Integrated MAX9693EPE+

Overview

The MAX9693EPE+ from Maxim Integrated is a dual ultra-fast ECL-output comparator with latch-enable functionality, designed for high-speed signal acquisition and timing-critical decision circuits. It delivers 1.2ns typical propagation delay, 100ps channel-to-channel propagation match, and operates from +5V and -5.2V supplies. Used in 600MHz+ line receivers and peak detectors where deterministic sampling and minimal skew are essential.

For engineers reviewing the MAX9693EPE+ datasheet, MAX9693EPE+ pinout, MAX9693EPE+ application, or MAX9693EPE+ equivalent, this page provides verified functional context, real-world timing constraints (e.g., 0.5ns latch setup time), package-specific layout guidance, and validated alternatives for high-speed ECL comparator selection.

Technical Context

The MAX9693EPE+ implements two independent high-gain BiCMOS comparator cores with fully differential ECL-compatible inputs and open-emitter complementary outputs requiring external pull-down resistors (50Ω–200Ω to -2V or 240Ω–2000Ω to -5.2V). Each channel features dedicated latch-enable (LEA/LEB) inputs enabling synchronous sample-hold operation at sub-nanosecond timing precision.

Its architecture maintains DC matching (±11.5mV input offset voltage, 10µV/°C drift) across temperature (-40°C to +85°C) while sustaining AC performance: 150ps dispersion over 10–100mV input overdrive and 500ps rise/fall times into 50Ω loads. The device requires strict microstrip PCB layout with ground plane and local 0.01µF decoupling.

Key Specifications

Pinout & Package

MAX9693EPE+ is housed in a 16-pin plastic DIP (PDIP) package with 0.300-inch body width and through-hole mounting. Pin 1 is top-left corner when notch faces up; pin numbering follows standard DIP convention (counter-clockwise).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast ECL comparator applications.

Compared with MAX9693EPE+, MAX9692EPE+ reduces component count in single-path systems but forfeits channel correlation, while ADCMP572BNLZ trades latch-enable functionality for superior jitter in CML-based clock distribution - making MAX9693EPE+ uniquely suited for synchronized dual-channel sampling at ECL logic levels.

Availability

MAX9693EPE+ 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 temperature ranges and long-lifecycle programs.

Supply support for MAX9693EPE+ 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 MAX9691/MAX9692/MAX9693 family targets ultra-high-speed signal conditioning systems requiring sub-2ns decision latency, deterministic latch behavior, and ECL-compatible interfacing - especially in test instrumentation and high-frequency data acquisition.

FAQ

What is the supply voltage configuration required for MAX9693EPE+?

The MAX9693EPE+ requires dual-rail supplies: +5V on VCC (Pin 11) and -5.2V on VEE (Pin 16). Each supply must be bypassed with a 0.1µF ceramic capacitor placed adjacent to its respective pin. This configuration enables ECL-level output swing and supports the specified -2.5V to +3.0V input common-mode range. Operating outside these voltages risks permanent damage per absolute maximum ratings.

How does the latch-enable function operate on MAX9693EPE+?

Each channel of MAX9693EPE+ has dedicated latch-enable inputs (LEA/LEA for Channel A; LEB/LEB for Channel B). When the LE input is driven ECL-high, the comparator operates normally. When driven ECL-low, outputs freeze in an unambiguous ECL state determined by input conditions at the latch transition. The latch requires 0.5ns minimum setup time and 0.5ns minimum pulse width for reliable operation - parameters rigorously tested across -40°C to +85°C.

What are the output termination requirements for MAX9693EPE+?

MAX9693EPE+ features open-emitter complementary outputs (Q/Q̅) that require external pull-down resistors. For -2V termination, use 50Ω–200Ω resistors; for -5.2V termination, use 240Ω–2000Ω resistors. These values ensure proper ECL logic levels (VOH ≈ -0.9V, VOL ≈ -1.7V) and maintain 50Ω transmission line drive capability. Improper termination causes signal reflection, timing uncertainty, and degraded propagation delay specs.

Can unused comparator inputs on MAX9693EPE+ be left floating?

No - unused comparator inputs on MAX9693EPE+ must not be left floating. Per datasheet Applications Information, all inputs (including those of inactive channels) must be terminated within the valid common-mode range (-2.5V to +3.0V) using appropriate bias networks. Floating inputs cause unpredictable switching, increased power consumption, and potential oscillation due to the device's high gain-bandwidth product. Grounding or biasing to VT = -2V is recommended.

What PCB layout practices are mandatory for stable MAX9693EPE+ operation?

A solid ground plane is mandatory for MAX9693EPE+. Mount 0.01µF ceramic decoupling capacitors as close as possible to VCC and VEE pins. Route ECL outputs as controlled-impedance microstrips terminated at the load (50Ω–200Ω to VT = -2V). Avoid stubs or vias in high-speed paths. Connect GND pins (3, 14) directly to the ground plane with short, low-inductance traces. Poor layout increases propagation delay variation and induces oscillation, especially near the 600MHz+ operating limit.