Supply original MC74VHCT574ADWR2, Logic - Flip Flops, by ON Semiconductor

Octal Bus Buffer/Line Driver Inverting with 3−State Outputs
The MC74VHCT240A 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 maintaining CMOS low power dissipation.
The MC74VHCT240A is an inverting 3−state buffer, and has two active−low output enables. This device is designed to be used with 3−state memory address drivers, etc.
Features
• High Speed: tPD = 5.6 ns (Typ) at VCC = 5.0 V
• Low Power Dissipation: ICC = 4 μA (Max) at TA = 25°C
• TTL−Compatible Inputs: VIL = 0.8 V; VIH = 2.0 V
• Power Down Protection Provided on Inputs and Outputs
• Balanced Propagation Delays
• Designed for 4.5 V to 5.5 V Operating Range
• Low Noise: VOLP = 1.1 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
• Chip Complexity: 110 FETs or 27.5 Equivalent Gates
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These Devices are Pb−Free and are RoHS Compliant