Circuit converts between TTL and shifted ECL

bidirectional circuit translates TTL to shifted ECL (SECL)

Field-programmable devices

Two transistors form bidirectional level translator

a translation from 5 to 3V

Divide by 'N' counter

Simple circuit using 161s

Divide By 1.5 Counter

Two inexpensive ICs divide a TTL clock signal by 1.5. By following the circuit with another flip/flop you could also generate a divide by three function.

C-MOS inverter makes low power amp

With the addition of one resistor and a capacitor, some common logic ICs can be transformed from digital to analog duties. This circuit outlines some the features to expect from different inverter ICs.