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PI74LPT2Q245 Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI74LPT2Q245 Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 4 page 1 PS8097 03/25/97 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74LPT2Q245 Fast CMOS 3.3V 8-Bit Bidirectional Transceiver Product Description Pericom Semiconductor’s PI74LPT series of logic circuits are produced in the Company’s advanced 0.6 micron CMOS technology achieving high speed while maintaining low power operation. The PI74LPT2Q245 is an 8-bit bidirectional transceiver designed for asynchronous two-way communication 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 PI74LPT2Q245 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 Product Pin Configuration Product Pin Description Truth Table(1) Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance s t u p n I ) 1 ( s t u p t u O ) 1 ( E OR / T LL A s u B o t a t a D B s u B LH B s u B o t a t a D A s u B HX Z e t a t S h g i H 20-PIN L20 Q20 R20 S20 e m a N n i Pn o i t p i r c s e D OE e l b a n E t u p t u O e t a t S - 3 ) W O L e v i t c A ( s t u p n I R / Tt u p n I l o r t n o C n o i t c e r i D 7 A - 0 Ar o s t u p n I A e d i S s t u p t u O e t a t S - 3 7 B - 0 Br o s t u p n I B e d i S s t u p t u O e t a t S - 3 D N Gd n u o r G VCC r e w o P Product Features • Compatible with LCX™ and LVT™ families of products • Supports 5V Tolerant Mixed Signal Mode Operation – Input can be 3V or 5V – Output can be 3V or connected to 5V bus • Advanced Low Power CMOS Operation • Excellent output drive capability: Balanced drives (12 mA sink and source) •33 Ω Series Resistors on all outputs • 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) B0 A0 OE T/R B1 A1 B2 A2 B3 A3 B4 A4 B5 1 A5 B6 A6 B7 A7 |
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