资 源 简 介
MM54HC27/MM74HC27Triple 3-Input NOR GateGeneral DescripTIonThese NOR gates uTIlize advanced silicon-gate CMOS technology,to achieve operaTIng speeds similar to LS-TTL gateswith the low power consumpTIon of standard CMOS integratedcircuits. All gates have buffered outputs, providinghigh noise immunity and the ability to drive 10 LS-TTL loads.The 54HC/74HC logic family is functionally as well as pinoutcompatible with the standard 54LS/74LS logic family.All inputs are protected from damage due to static dischargeby internal diode clamps to VCC and ground.FeaturesY Typical propagation delay: 8 nsY Wide operating supply voltage range: 2±6VY Low input current: k 1 mAY Low quiescent supply current: 20 mA maximum(74HC Series)Y Fanout of 10 LS-TTL Loads
