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PI74FCT2245CTLE Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI74FCT2245CTLE Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
1 / 7 page 1 PS2012E 08/08/06 PinConfiguration Inputs OE T/R Outputs L L Bus B Data to Bus A L H Bus A Data to Bus B H X High Z State 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance TruthTable(1) Pin Name Description OE 3-State Output Enable Inputs (Active LOW) T/R Transmit/Receive Input A0-A7 Side A Inputs or 3-State Outputs B0-B7 Side B Inputs or 3-State Outputs GND Ground VCC Power Pin Description Fast CMOS Octal Bidirectional Transceivers 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 PI74FCT245T PI74FCT2245T (25 Ω Ω Ω Ω Ω Series) Block Diagram Description Pericom Semiconductor’s PI74FCT245T and PI74FCT2245T are 8-bit wide octal buffer bidirectional transceivers designed for asynchronous two-way communication between data buses. The transmit/receive (T/R) input determines the direction of data flow throughthebidirectionaltransceiver.Transmit(activeHIGH)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 Hi-Z condition. PI74FCT2245T has 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. Features • Pin compatible with bipolar FAST™ Series at a higher speed and lower power consumption • 25-ohm series resistor on all outputs (FCT2245Tonly) • 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 • Packaging (Pb-free & Green Available): – 20-pin 173-mil wide plastic TSSOP (L) – 20-pin 300-mil wide plastic SOIC (S) – 20-pin 209-mil wide plastic SSOP (H) – 20-pin 150-mil wide plastic QSOP (Q) 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 T/R A0 A1 A2 A3 A4 A5 A6 A7 GND Vcc OE B0 B1 B2 B3 B4 B5 B6 B7 A0 B0 OE A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 T/R 06-0207 |
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