F100K family in 1975.

The ECLinPS ("ECL in picoseconds") family was introduced in 1987. ECLinPS has 500 ps single-gate delay and 1.1 GHz flip-flop toggle frequency. The ECLinPS family parts are available from multiple sources, including Arizona Microtek, Micrel (subsequently acquired by Microchip Technology Inc.), National Semiconductor, and ON Semiconductor.

The high power consumption of ECL meant that it has been used mainly when high speed is a vital requirement. Older high-end mainframe computers, such as the Enterprise System/9000

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