MC74VHC240DWR2G ON Semiconductor

MC74VHC240 Octal Bus Buffer/Line Driver Inverting with 3-State Outputs The MC74VHC240 is an advanced high speed CMOS octal bus buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while MC74VHC240 218 A1 YA1 4 16 A2 YA2 6 14 A3 YA3 8 12 A4 YA4 DATA INVERTING INPUTS OUTPUTS 11 9 B1 YB1 13 7 B2 YB2 15 5 B3 YB3 17 3 B4 YB4 1 OEA OUTPUT 19 ENABLES OEB Figure 1. LOGIC DIAGRAM MAXIMUM RATINGS* Symbol Parameter Value Unit This device contains protection circuitry to guard against damage V DC Supply Voltage 0.5 to + 7.0 V CC due to high static voltages or electric V DC Input Voltage 0.5 to + 7.0 V fields. However, precautions must in be taken to avoid applications of any V DC Output Voltage 0.5 to V + 0.5 V out CC voltage higher than maximum rated I Input Diode Current 20 mA voltages to this highimpedance cir- IK cuit. For proper operation, V and in I Output Diode Current 20 mA OK V should be constrained to the out I DC Output Current, per Pin 25 mA range GND (V or V ) V . out in out CC Unused inputs must always be I DC Supply Current, V and GND Pins 75 mA CC CC tied to an appropriate logic voltage level (e.g., either GND or V ). P Power Dissipation in Still Air, SOIC Packages 500 mW CC D Unused outputs must be left open. TSSOP Package 450 T Storage Temperature 65 to + 150 C stg * Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute maximum rated conditions is not implied. Derating SOIC Packages: 7 mW/ C from 65 to 125 C TSSOP Package: 6.1 mW/ C from 65 to 125 C RECOMMENDED OPERATING CONDITIONS SymbolParameter Min MaxUnit V DC Supply Voltage 2.0 5.5 V CC V DC Input Voltage 0 5.5 V in V DC Output Voltage 0 V V out CC T Operating Temperature, All Package Types 40 + 85 C A t , t Input Rise and Fall Time V = 3.3V 0.3V 0 100 ns/V r f CC V =5.0V 0.5V 0 20 CC