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MC74LVX245 Datasheet(PDF) 1 Page - ON Semiconductor |
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MC74LVX245 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 8 page © Semiconductor Components Industries, LLC, 2005 March, 2005 − Rev. 3 1 Publication Order Number: MC74LVX245/D MC74LVX245 Octal Bus Transceiver With 5 V−Tolerant Inputs The MC74LVX245 is an advanced high speed CMOS octal bus transceiver. It is intended for two−way asynchronous communication between data buses. The direction of data transmission is determined by the level of the T/R input. The output enable pin (OE) can be used to disable the device, so that the buses are effectively isolated. All inputs are equipped with protection circuits against static discharge. Features • High Speed: t PD = 4.7 ns (Typ) at VCC = 3.3 V • Low Power Dissipation: I CC = 4 mA (Max) at TA = 25°C • Power Down Protection Provided on Inputs • Balanced Propagation Delays • Low Noise: V OLP = 0.8 V (Max) • Pin and Function Compatible with Other Standard Logic Families • Latchup Performance Exceeds 300 mA • ESD Performance: Human Body Model > 2000 V; Machine Model > 200 V • Pb−Free Packages are Available* Application Notes • Do not force a signal on an I/O pin when it is an active output, damage may occur • All floating (high impedance) input or I/O pins must be fixed by means of pullup or pulldown resistors or bus terminator ICs • A parasitic diode is formed between the bus and V CC terminals. Therefore, the LVX245 cannot be used to interface 5.0 V to 3.0 V systems directly Figure 1. 20−Lead Pinout (Top View) 19 20 18 17 16 15 14 2 1 34567 VCC 13 8 12 9 11 10 OE B0 B1 B2 B3 B4 B5 B6 B7 T/R A0 A1 A2 A3 A4 A5 A6 A7 GND *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. A = Assembly Location WL, L = Wafer Lot Y, YY = Year W, WW = Work Week http://onsemi.com See detailed ordering and shipping information in the package dimensions section on page 2 of this data sheet. ORDERING INFORMATION MARKING DIAGRAMS 20 1 1 20 SOIC−20 DW SUFFIX CASE 751D LVX245 AWLYYWW LVX 245 ALYW TSSOP−20 DT SUFFIX CASE 948E SOEIAJ−20 M SUFFIX CASE 967 74LVX245 AWLYWW 1 1 1 20 1 20 20 20 |
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