资 源 简 介
MM54HC258/MM74HC258 Quad 2-ChannelTRI-STATEÉ MulTIplexer (Inverted Output)General DescripTIonThis Quad 2-to-1 line data selector/mulTIplexer uTIlizes advancedsilicon-gate CMOS technology. Along with the highnoise immunity and low power dissipation of standardCMOS integrated circuits, these possess the ability to driveLS-TT loads. The large output drive capability with theTRI-STATE feature make this device ideal for interfacingwith bus lines in a bus organized system. When the OutputControl line is taken high, the outputs of all four multiplexersare sent into a high impedance state. When the Output Controlline is low, A or B data is selected for the HC258. The54HC/74HC logic family is speed, function, and pin-outcompatible 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 delays: 16 nsY Wide power supply range: 2V±6VY Low quiescent supply current: 80 mA maximum(74HC Series)Y TRI-STATE outputs for connection to system busesY Added circuitry allows data input levels to float duringTRI-STATE with no additional power consumption
