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

MC74VHCT00A屬于集成電路（IC） > 門和反相器。安森美半導(dǎo)體公司制造生產(chǎn)的MC74VHCT00A門和反相器邏輯柵極和逆變器系列中的產(chǎn)品對(duì)單個(gè)邏輯信號(hào)執(zhí)行基本邏輯運(yùn)算（例如 AND、NOT、OR 等）。與觸發(fā)器不同，它們不能夠存儲(chǔ)信息，不會(huì)對(duì)提供給其輸入的信號(hào)立即做出響應(yīng)。雖然早就被集成電路實(shí)施形式所取代，以用于實(shí)現(xiàn)復(fù)雜功能，但分立柵極仍可在僅需要非常簡(jiǎn)單邏輯功能的情況下使用。