three controlled signal paths (analog switch / tri-state style)

      INA ────────────[ SW_A ]───────────┐
                       (ENA)             │
      INB ────────────[ SW_B ]───────────┼────────────── OUT
                       (ENB)             │
      INC ────────────[ SW_C ]───────────┘
                       (ENC)

2-bit select

X = MSB, Y = LSB

Select table: X Y = 0 0 -> ENA=1 (INA -> OUT) X Y = 0 1 -> ENB=1 (INB -> OUT) X Y = 1 0 -> ENC=1 (INC -> OUT) X Y = 1 1 -> none (terminate / disconnect)