FST32253 - Dual 4:1 Multiplexer/Demultiplexer Bus Switch with 25 Series Resistor in Outputs
The Fairchild Switch FST32253 is a dual 4:1 high-speed CMOS TTL-compatible multiplexer/demultiplexer bus switch.
The low On Resistance of the switch allows inputs to be connected to outputs without adding propagation delay or generating additional ground bounce noise.
When OE is LOW, S0 and S1 conne