PI74FCT3244 Fast CMOS 3.3V 8-Bit Buffer/Line Driver Features Description Advanced Low Power CMOS operation The PI74FCT3244 is an 8-bit buffer/line driver designed for driving high capacitive memory loads. With its balanced-drive Compatible with LVC class of products characteristics, this high-speed, low power device provides lower Compatible with industry standard octal pinouts ground bounce, transmission line matching, fewer line reflections Excellent output drive capability: and lower EMI and RFI. This makes it ideal for driving on-board Balanced Drives (24mA sink and source) buses and transmission lines. Can serve as a 5V to 3V translator The PI74FCT3244 can be driven from either 3.3V or 5.0V devices Inputs can be driven by 3.3 V or 5V devices allowing this device to be used as a translator. Low ground bounce outputs Hysteresis on all inputs Industrial operating temperature range: 40C to +85C Packaging (Pb-free & Green available): 20-pin 173-mil wide plastic TSSOP (L) 20-pin 150-mil wide plastic QSOP (Q) 20-pin 300-mil wide plastic SOIC (S) Pin Configuration Block Diagram OE A 20 V OE 1 CC A OE B 19 OE A 2 B D 0 18 A B O 0 O 0 3 A D 0 A O 0 17 B A D 0 D 1 4 B 16 A O 1 5 O 1 B O 0 B D 0 A 15 B D 2 6 D 1 B 14 A O 2 O 2 7 A A D 1 O 1 B A 13 D 2 D 3 8 A B 12 O 3 O 3 9 B O 1 B D 1 B GND 11 D 3 10 A A O 2 D 2 B O 2 B D 2 A A O 3 D 3 B O 3 B D 3 PS7067I 06/20/06 06-0218 1PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .............................................................. 65C to +150C Note: Stresses greater than those listed under MAXIMUM RAT- Ambient Temperature with Power Applied ............................. 40C to +85C INGS may cause permanent damage to the device. This is Supply Voltage to Ground Potential (Inputs & V Only)....... 0.5V to +7.0V CC a stress rating only and functional operation of the device at these or any other conditions above those indicated in Supply Voltage to Ground Potential (Outputs & D/O Only) .... 0.5V to +7.0V the operational sections of this specification is not implied. DC Input Voltage ...................................................................... 0.5V to +7.0V Exposure to absolute maximum rating conditions for ex- DC Output Current.................................................................................120 mA tended periods may affect reliability. Power Dissipation ......................................................................................1.0W (1) Truth Table Pin Description Inputs Outputs Pin Name Description OE OE D O A B XX XX 3-State Output Enable OE , OE A B Inputs (Active LOW) L L L L L L H H D Inputs XX H H X Z O Outputs XX GND Ground Note: 1. H = High Voltage Level, X = Dont Care, V Power CC L = Low Voltage Level, Z = High Impedance PS7067I 06/20/06 06-0218 2