PI74FCT157T/257T

Storage Temperature .................................................................... 65°C to +150°C
Ambient Temperature with Power Applied .................................... 40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) .............. 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) ........... 0.5V to +7.0V
DC Input Voltage ............................................................................ 0.5V to +7.0V
DC Output Current ..................................................................................... 120 mA
Power Dissipation ..........................................................................................1.0W

Note:
Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Pericom Semiconductor's PI74FCT series of logic circuits are producedin the Company's advanced 0.8 micron CMOS technology,achieving industry leading speed grades. All PI74FCT2XXX deviceshave a built-in 25-ohm series resistor on all outputs to reduce noisebecause of reflections, thus eliminating the need for an externalterminating resistor.

The PI74FCT157T/257T and PI74FCT2157T/2257T are highspeedquad 2-input multiplexers. The common select input can beused to select four bits of data from two sources. The four bufferedoutputs present the selected data in the true (non-inverting) form.

The PI74FCT157T/2157T has a common, active-LOW, Enableinput (E). When E is inactive, all four outputs are held LOW. ThePI74FCT157T/2157T can generate any four of the 16 differentfuntions of two variables with one common variable. ThePI74FCT157T/2157T can be used as a function generator or tomove data from two different groups of registers to a common bus.

The PI74FCT257/2257T has a common Output Enable (OE) input.

When OE is HIGH, all outputs of PI74FCT157T/257T and PI74FCT2157T/2257T are switched to a high-impedancestate allowing the outputs to interface directly with bus-orientedsystems.