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54154 DM54154 DM74154 4-Line to 16-Line Decoders Demultiplexers June 1989 54154 DM54154 DM74154 4-Line to 16-Line Decoders Demultiplexers General Description Features Each or these 4-line-to-16-line decoders utilizes TTL circuit- Y Decodes 4 binary-coded inputs into one of 16 mutually ry to decode four binary-coded inputs into one of sixteen exclusive outputs mutually exclusive outputs when both the strobe inputs G1 Y Performs the demultiplexing function by distributing data and G2 are low The demultiplexing function is performed from one input line to any one of 16 outputs by using the 4 input lines to address the output line passing Y Input clamping diodes simplify system design data from one of the strobe inputs with the other strobe Y High fan-out low-impedance totem-pole outputs input low When either strobe input is high all outputs are Y Typical propagation delay high These demultiplexers are ideally suited for implement- 3 levels of logic 19 ns ing high-performance memory decoders All inputs are buff- Strobe 18 ns ered and input clamping diodes are provided to minimize Y Typical power dissipation 170 mW transmission-line effects and thereby simplify system de- sign Y Alternate Military Aerospace device (54154) is avail- able Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6548