The SN74CBT162292 is a 12-bit 1-of-2 high-speed TTL-compatible FET multiplexer/ demultiplexer. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. When the select (S) input is low, port A is connected to port B1, and RINT is connected to port B2. When S is high, port A is connected to port B2, and RINT is connected to port B1. The A-port inputs/outputs include equivalent 25- series resistors to reduce overshoot and undershoot.