bidirectional circuit translates TTL to shifted ECL (SECL)
a translation from 5 to 3V
Simple circuit using 161s
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.
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.