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MM54HC155/MM74HC155 Dual 2-To-4Line Decoder/DemulTIplexersGeneral DescripTIonThe MM54HC155/MM74HC155 is a high speed silicon-gateCMOS decoder/demulTIplexer. It uTIlizes advanced silicongateCMOS technology and features dual 1-line-to-4-linedemultiplexers with independent strobes and common binary-address inputs. When both sections are enabled by thestrobes, the common address inputs sequentially select androute associated input data to the appropriate output ofeach section. The individual strobes permit activating or inhibitingeach of the 4-bit sections as desired. Data appliedto input C1 is inverted at its outputs and data applied to C2is non-inverted at its outputs. The inverter following the C1data input permits use as a 3-to-8-line decoder, or 1-to-8-line demultiplexer, without gating.All inputs to the decoder are protected from damage due toelectrostatic discharge by diodes to VCC and Ground.The device is capable of driving 10 low power Schottky TTLequivalent loads.The MM54HC155/MM74HC155 is functionally and pinequivalent to the 54LS155/74LS155 with the advantage ofreduced power consumption.FeaturesY ApplicationsDual 2-to-4-line decoderDual 1-to-4-line demultiplexer3-to-8-line decoder1-to-8-line demultiplexerY Typical propagation delay: 22 nsY Low quiescent current: 80 mA maximum(74HC series)Y Wide operating range: 2V±6V
