4-line to line Decoders/demultiplexers. Each or these 4-line-toline decoders utilizes TTL circuitry to decode four binary-coded inputs into one of. MOS technology. A binary code applied to the four inputs (A to D) provides a low level at the selected one of sixteen outputs excluding the other fifteen outputs. SNN .. of significant portions of TI information in TI data books or data sheets is permissible only if reproduction is without alteration.
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Rather than providing only a single enable, both pins are used. High Level Input Voltage. View PDF for Mobile. The person datadheet took time to answer the question will appreciate that. That is, for an input ofthe 0 output is selected, and it is driven low.
I OS Short Circuit. All inputs are buffered and input clamping diodes are provided to minimize transmission-line effects and thereby simplify system design.
First, the inversion of the outputs simply means that the output is active low. Each or these 4-line-toline decoders utilizes TTL circuitry to decode four binary-coded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs, G1 and G2, are low.
74154 Datasheet PDF
7415 Level Output Current. If you want to know exactly what is going on then draw out the truth table, but it is unlikely their function will make much sense to you. I am a new user so I didn’t know I had that power.
Sign up using Facebook. Y Performs the demultiplexing function by distributing data. Note 3 I CC is measured with all outputs open and all inputs grounded.
Datasheet pdf – 4-Line to Line Decoders/Demultiplexers – National Semiconductor
Low Level Input Current. The LED can be chosen at random by the status of the 4 line selector inputs. If you wanted to generate a 1 of demultiplexer, you could use 16 s looking at the 4 least significant bits, while a single would look at the 4 most significant bits, with one ouput going to each of the other 16 s.
Sign up using Email and Password. Y Input clamping diodes simplify system design.
Please consider upvoting those questions you found useful like this one by clicking the arrow pointing up near the answer vote count which is in turn above the checkbox you clicked to accept this question. However, due to the internal structure of theonly one output can be enabled at a time. My first question is more important According to the internal logic diagram on the datasheet, the Datasheey inputs are connected to a two-input AND gate with inverting datasjeet, whose output feeds one input of all the NAND gates that produce the outputs.
Datasheet(PDF) – National Semiconductor (TI)
As for the NAND gates, there is a function being implemented in which the gates are there to realize it. Y Alternate Military Aerospace device is avail. These demultiplexers are ideally suited for implementing high-performance memory decoders.
The active-low output is just how the design for that specific decoder was carried out – there dtaasheet also active-high varieties. V CC eatasheet Max. And why are there 2 of them, you ask? Low to High Level Output.
The demultiplexing function is performed by using the 4 input lines to address the output line, passing data from one of the strobe inputs with the other strobe input low.
Office Distributors for availability and specifications. Download the datasheet below for a more comprehensive summary. High Level Input Current. Low Level Input Voltage.