PI74FCT543T Datasheet | Pericom Semiconductor

Features : - PI74FCT543T/544/2543T is pin patible with bipolar FAST™ Series at a higher speed and lower power consumption - 25Ω series resistor on all outputs - TTL input and output levels - Low ground bounce outputs - Extremely low static power .. - Hysteresis on all inputs - Industrial operating temperature range: - 40°C to +85°C - Packages available: - 24-pin 300 mil wide plastic DIP (P) - 24-pin 150 mil wide plastic QSOP (Q) - 24-pin 150 mil wide plastic TQSOP (R) - 24-pin 300 mil wide plastic SOIC (S) - Device models available on request Product Description : Peri Semiconductor’s PI74FCT series of logic circuits are produced in the pany’s 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 PI74FCT543T/544T and PI74FCT2543T is an 8-bit wide non-inverting transceiver designed with two sets of eight D-type latches with separate input and output controls for each set. For data flow from A to B, for example, the A-to-B Enable (CEAB) input must be LOW in order to enter data from A0- A7 or to take data from B0- B7, as indicated in the Truth Table. With CEAB LOW, a LOW signal makes the A-to-B latches transparent; a subsequent LOW-to-HIGH transition of the LEAB signal puts the A latches in the storage mode and their outputs no longer change the A inputs. With CEAB and OEAB both LOW, the 3-state B output buffers are active and reflect the data present at the output of the A latches. Control of data from B to A is similar, but uses the CEAB, LEAB, and OEAB inputs. The PI74FCT543T is a noninverting of the PI74FCT544T. PI74FCT543/544/2543T Logic Block Diagram D LE A0 DETAIL A B0 D LE A1 A2 A3 A4 A5 A6 A7 DETAIL A x 7 B1 B2 B3 B4 B5 B6 B7 OEBA OEAB CEBA LEBA CEAB LEAB NOTE: PI74FCT543/2543T function is shown. PS2020A 03/11/96 PI74FCT543T/544T (25Ω...