FSTU32160A

The Fairchild Switch FSTU32160A is a 16-bit to 32-bit 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.

The FSTU32160A can be used in applications where two buses need to be addressed simultaneously. The FSTU32160A is
designed so that the A Port demultiplexes into B₁ or B₂ or both. The A and B Ports are "undershoot hardened" with
UHCä protection to support an extended range to 2.0V below ground. Fairchild's integrated Undershoot Hardened
Circuit, UHC senses undershoot at the I/O's, and responds by preventing voltage differentials from developing and
turning on the switch.

Two select (SEL₁, SEL₂) inputs provide switch enable control.When SEL₁, SEL₂ are HIGH, the FSTU32160A precharges the B Port to a selectable bias voltage (Bias V) to minimize live insertion noise.