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MC74VHCT540ADT Fiches technique(PDF) 1 Page - ON Semiconductor |
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MC74VHCT540ADT Fiches technique(HTML) 1 Page - ON Semiconductor |
1 / 7 page © Semiconductor Components Industries, LLC, 2006 March, 2006 − Rev. 4 1 Publication Order Number: MC74VHCT540A/D MC74VHCT540A Octal Bus Buffer Inverting The MC74VHCT540A is an advanced high speed CMOS inverting octal bus buffer fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation. The MC74VHCT540A features inputs and outputs on opposite sides of the package and two AND−ed active−low output enables. When either OE1 or OE2 are high, the terminal outputs are in the high impedance state. The VHCT inputs are compatible with TTL levels. This device can be used as a level converter for interfacing 3.3 V to 5.0 V, because it has full 5.0 V CMOS level output swings. The VHCT540A input and output (when disabled) structures provide protection when voltages between 0 V and 5.5 V are applied, regardless of the supply voltage. These input and output structures help prevent device destruction caused by supply voltage − input/output voltage mismatch, battery backup, hot insertion, etc. The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7.0 V, allowing the interface of 5.0 V systems to 3.0 V systems. Features • High Speed: tPD = 3.7 ns (Typ) at VCC = 5.0 V • Low Power Dissipation: ICC = 4.0 μA (Max) at TA = 25°C • TTL−Compatible Inputs: VIL = 0.8 V; VIH = 2.0 V • Power Down Protection Provided on Inputs • Balanced Propagation Delays • Designed for 2.0 V to 5.5 V Operating Range • Low Noise: VOLP = 1.2 V (Max) • Pin and Function Compatible with Other Standard Logic Families • Latchup Performance Exceeds 300 mA • ESD Performance: HBM > 2000 V; Machine Model > 200 V • Chip Complexity: 124 FETs or 31 Equivalent Gates w These devices are available in Pb−free package(s). Specifications herein apply to both standard and Pb−free devices. Please see our website at www.onsemi.com for specific Pb−free orderable part numbers, or contact your local ON Semiconductor sales office or representative. SOIC DW SUFFIX CASE 751D 1 A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week http://onsemi.com 20 MARKING DIAGRAMS VHCT540A AWLYYWW TSSOP DT SUFFIX CASE 948E 1 1 20 VHCT 540A ALYW 74VHCT540 AWLYWW SOIC EIAJ M SUFFIX CASE 967 1 20 L L H X L L X H L H X X FUNCTION TABLE Inputs Output Y OE1 OE2 A H L Z Z Device Package Shipping ORDERING INFORMATION MC74VHCT540ADW SOIC 38 Units/Rail MC74VHCT540ADT TSSOP 75 Units/Rail MC74VHCT540AM SOIC 50 Units/Rail |
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