Fast adder 1 (CB7055E)

We found this circuit in an Electronic Engineering from the 90s. It applies to any logical family.

Dual Output Differential Amplifier (CB6640E)
This circuit was found in a 1965 Electronic Design. The transistors are of the time, but the...
Undervoltage switch CA3140 (CB24964E)
We found it in the Radio Electronics magazine of June 1986. The reference voltage is adjusted in...
500 kHz Clock (CB6468E)
Operating at just 1.35 V this circuit was found in a 1969 Electronic Design. The circuit makes use...