资 源 简 介
54LS253/DM54LS253/DM74LS253TRI-STATEÉ Data Selectors/MulTIplexersGeneral DescripTIonEach of these Schottky-clamped data selectors/mulTIplexerscontains inverters and drivers to supply fully complementary,on-chip, binary decoding data selecTIon to theAND-OR gates. Separate output control inputs are providedfor each of the two four-line sections.The TRI-STATE outputs can interface directly with datalines of bus-organized systems. With all but one of the commonoutputs disabled (at a high impedance state), the lowimpedance of the single enabled output will drive the busline to a high or low logic level.FeaturesY TRI-STATE version of LS153 with same pinoutY Schottky-diode-clamped transistorsY Permit multiplexing from N-lines to one lineY Performs parallel-to-serial conversionY Strobe/output controlY High fanout totem-pole outputsY Typical propagation delayData to output 12 nsSelect to output 21 nsY Typical power dissipation 35 mWY Alternate Military/Aerospace device (54LS253) is available.Contact a National Semiconductor Sales Office/Distributor for specifications.
