PI74FCT3245 Datasheet | Pericom Semiconductor

Features - Advanced Low Power CMOS Operation - patible with LVC class of products - patible with industry standard octal pinouts - Excellent output drive capability: Balanced Drives (24 m A sink and source) - Can serve as a 5V to 3V translator - Inputs can be driven by 3.3V or 5V devices - Low ground bounce outputs - Hysteresis on all inputs - Industrial operating temperature range: -40 C to +85 C - Packages available: -20-pin 173 mil wide plastic TSSOP(L) -20-pin 150 mil wide plastic QSOP(Q) -20-pin 150 mil wide plastic TQSOP(R) -20-pin 300 mil wide plastic SOIC(S) Product Description Peri Semiconductor’s PI74FCT3 series of logic circuits are produced in the pany’s advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74FCT3245 is an 8-bit bidirectional transceiver designed for asynchronous two-way munication between data buses. The transmit/receive input pin (T/R) determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A ports to B ports, and receive (active LOW) from B ports to A ports. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74FCT3245 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator in a mixed 3.3V/5.0V system. Logic Block Diagram T/ OE A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 1A5 Product Pin Configuration T/R A0 A1 A2 A3 A4 A5 A6 A7 GND 20 1 19 2 20-PIN 18 3 L20 4 Q20 17 5 R20 16 6 S20 15 14 7 13 8 12 9 11 10 VCC OE B0 B1 B2 B3 B4 B5 B6 B7 Product Pin Description Pin Name OE T/R A7-A0 B7-B0 GND VCC Description 3-State Output Enable Inputs (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs Side B Inputs or 3-State Outputs Ground Power Truth Table Inputs(1) OE L L H T/R L H X Outputs(1) Bus B Data to Bus A Bus A Data to Bus B High State Z B5 A6 B6 A7 B7 Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High...