Low-voltage positive emitter-coupled logic (LVPECL) is a power-optimized version of PECL, using a positive 3.3 V instead of 5 V supply. PECL and LVPECL are differential-signaling systems and are …

Jul 23, 2025 · ECL stands for Emitter Coupled Logic. It is one class of digital logic family that employs differential amplifier circuits with transistors in an emitter-coupled configuration to allow fast switching …

Jul 12, 2018 · Emitter-coupled logic (ECL) is a BJT-based logic family which is generally considered as the fastest logic available. ECL achieves its high-speed operation by employing a relatively small …

Emitter-coupled logic is used as a logic & interface technology within extremely high-speed communications devices like fiber-optic transceiver interfaces, Ethernet & ATM (Asynchronous …

The emitter–follower output stage of the ECL family allows an additional level of logic to be performed at very low cost by simply wiring the outputs of several gates in parallel.

What is Emitter Coupled Logic (ECL) Circuit? Emitter coupled logic (ECL) is the fastest of all logic families and, therefore, is employed in applications where very high speed is essential.

Jul 10, 2025 · Emitter-coupled logic is the fastest of all digital logic families. It was invented by Hannon S. Yourke in the year 1956 at IBM. It is also called as current mode logic. The design of ECL circuit …

An emitter-follower output stage shifts the output levels to match the input levels and provides very high current-driving capability, up to 50 mA per output. It is also responsible for the family’s name, “emitter …

Mar 8, 2022 · Emitter Coupled Logic Basics Last updated 3/8/22 Logic - Basics History Invented by IBM in the 1950s High Speed logic solution of the 60s and 70s • Due to power concerns – used only …

Explore Emitter Coupled Logic (ECL) circuits: their key characteristics, implementation using bipolar junction transistors (BJTs), and examples of ECL inverter, NAND, and NOR gates.