TRIMUX - dual balanced ternary multiplexer/demultiplexer

TRIMUX is basic component for building ternary hardware. Positive voltage means +1 (P). Zero voltage means 0 (O). Negative voltage means -1 (N). Two power sources are required (+5 volts and -5 volts). This device consists of two independent multiplexers/demultiplexers and each of them may connect any of 3 inputs to 1 output based on control signal (connection may work in both directions - so it could be 3 outputs connected to 1 input). Switching frequency could be up to 1 MHz (see oscillograms).

Connector JP1:

1) S1 - select input of the 1st ternary multiplexer

2) N1 - connected to C1 if S1=N ("negative" or -5V)

3) O1 - connected to C1 if S1=O ("zero" or 0V)

4) P1 - connected to C1 if S1=P ("positive" or +5V)

5) C1 - common signal of the 1st ternary multiplexer

Connector JP2:

1) S2 - select input of the 2nd ternary multiplexer

2) N2 - connected to C2 if S2=N ("negative" or -5V)

3) O2 - connected to C2 if S2=O ("zero" or 0V)

4) P2 - connected to C2 if S2=P ("positive" or +5V)

5) C2 - common signal of the 2nd ternary multiplexer

Connector JP3:

1) V-NEG - negative voltage (typically -5V)

2) GND - ground wire

3) V-POS - positive voltage (typically +5V)

Bill of Materials:

IC1,IC2: DG403 (DIP16), C1-C4: 0.1uF (tantalum), JP1,JP2:right-angle 5-pin headers, JP3: right-angle 3-pin header