Fairchild switch FSTD3125 provides four high-speed CMOS TTL-compatible bus
switches. The low on resistance of the switch allows inputs to be connected to
outputs without adding propagation delay or generating additional ground bounce
noise. A diode to VCC has been integrated into the circuit to allow
for level shifting between 5V inputs and 3.3V outputs.
The device is organized as four one-bit switches with separate /OE inputs.
When /OE is LOW, the switch is ON and port A is connected to port B. When /OE is
HIGH, the switch is OPEN and a high-impedance state exists between the two
ports.
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