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Current Mode Logic with Transistor/Diode Pairs

A project log for LED Coupled Logic (LCL)

Reaching sub 1 ns propogation delay with LEDs and bipolar transistors.

timTim 02/24/2021 at 07:090 Comments

Found in the Motorola High Speed Switching Transistor Handbook from 1963. Looks like LCL was pre-anticipated by implementations with germanium transistors and diodes.

The book is extremely interesting - the best book on discrete bipolar logic I have seen so far. It goes way down into theory and device physics:

https://archive.org/details/High-speedSwitchingHandbook

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