The MC74VHCT00A is an advanced high speed CMOS 2--input NAND gate fabricated with silicon gate CMOS technology. It achieves high speed operation while maintaining CMOS low power dissipation.
The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The device input is compatible with TTL--type input thresholds and the output has a full 5 V CMOS level output swing. The input protection
circuitry on this device allows overvoltage tolerance on the input, allowing the device to be used as a logic--level translator from 3.0 V CMOS logic to 5.0 V CMOS Logic or from 1.8 V CMOS logic to 3.0 V CMOS Logic while operating at the high--voltage power supply.
The MC74VHCT00A input structure provides protection when voltages up to 7 V are applied, regardless of the supply voltage. This allows the MC74VHCT00A to be used to interface 5 V circuits to 3 V circuits. The output structures also provide protection when VCC = 0 V. These input and output structures help prevent device destruction caused by supply voltage -- input/output voltage mismatch, battery backup, hot insertion, etc.

• High Speed: tPD = 5.0 ns (Typ) at VCC = 5 V
• Low Power Dissipation: ICC = 2 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 3.0 V to 5.5 V Operating Range
• Low Noise: VOLP = 0.8 V (Max)
• Pin and Function Compatible with Other Standard Logic Families
• Chip Complexity: 48 FETs or 12 Equivalent Gates