描述 Description

The MC74VHC1GT14 is a single gate CMOS Schmitt-trigger inverter fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL 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 5V 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 3.0VCMOS logic to 5.0V CMOS Logic or from 1.8V CMOS logic to 3.0V CMOS Logic while operating at the high-voltage power supply.The MC74VHC1GT14 input structure provides protection when voltages up to 7V are applied, regardless of the supply voltage. This allows the MC74VHC1GT14 to be used to interface 5V circuits to 3V circuits. The output structures also provide protection when VCC = 0V.These input and output structures help prevent device destruction caused by supply voltage - input/output voltage mismatch, battery backup, hot insertion, etc. The MC74VHC1GT14 can be used to enhance noise immunity or to square up slowly changing waveforms.

特性 Features

? High Speed: tPD = 4.5ns (Typ) at VCC = 5V
? Low Power Dissipation: ICC = 1μA (Max) at TA = 25°C
? TTL-Compatible Inputs: VIL = 0.8V; VIH = 2.0V
? CMOS-Compatible Outputs: VOH > 0.8VCC ; VOL CC @ Load
? Power Down Protection Provided on Inputs and Outputs
? Balanced Propagation Delays
? Pin and Function Compatible with Other Standard Logic Families
? Pb-Free Packages are Available

簡介

MC74VHC1GT14屬于集成電路（IC）的門反相器。由制造生產(chǎn)的MC74VHC1GT14門和反相器邏輯柵極和逆變器系列中的產(chǎn)品對單個邏輯信號執(zhí)行基本邏輯運(yùn)算（例如 AND、NOT、OR 等）。與觸發(fā)器不同，它們不能夠存儲信息，不會對提供給其輸入的信號立即做出響應(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單邏輯功能的情況下使用。