Fast CMOS Bus Interface Registers

Pericom Semiconductors PI74FCT series of Logic circuits are produced in the Companys advanced 0.8 micron CMOS technology, achieving industry leading speed grades. All PI74FCT2XXX devices have a built-in 25-ohm series resistor on all outputs to reduce noise because of reflections, thus eliminating the need for an external terminating resistor. The PI74FCT821T/2821T is a 10-bit wide Register designed with ten D-type Flip-Flops with a buffered common Clock and buffered 3-state outputs. The PI74FCT823/2823T is a 9-bit wide Register designed with Clock Enable and Clear. The PI74FCT825T is an 8-bit wide Register with all PI74FCT823T controls plus multiple enables. When output enable (OE) is LOW, the outputs are enabled. When OE is HIGH, the outputs are in the high impedance state. Input data meeting the setup and hold time requirements of the D inputs is transferred to the Y outputs on the LOW-to-HIGH transition of the Clock input. By Pericom Semiconductor Corporation