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.
Y Typical propagation delay. Sign up using Facebook. Post as a guest Name. Since the ouputs are active low, NAND gates do the job. This chip is often used in demultiplexing applications, such as digital clocks, LED matrices, and other graphical outputs.
Datasheet pdf – 4-Line to Line Decoders/Demultiplexers – National Semiconductor
I am a new user so I didn’t know I had that power. Please consider upvoting those questions you found useful like this one dataaheet clicking the arrow pointing up near the answer vote count which is in turn above the checkbox you clicked to accept this question. Office Distributors for availability and specifications. You can upvote more than one answer. When either strobe input is high, all outputs are high.
So is it possible that both enables are 741544 to a 2-input OR gate; this is just making use of the extra pins to make 24? These demultiplexers are ideally suited for implementing high-performance memory decoders. Low to High Level Output. The active-low output is just how the design for that specific decoder was carried out – there is also active-high varieties. Absolute Maximum Ratings Note. If Military Aerospace specified devices are required. All the other ouputs stay high.
All inputs are buffered and input clamping diodes are provided to minimize transmission-line effects and thereby simplify system design. Note 3 I CC is measured with all outputs open and all inputs grounded. I CC Supply Current. Many TTL parts and older memory chips have active low enable inputs, so the active low outputs of this part can be connected directly to those inputs.
Low Level Input Current. This allows more flexibility in the logic functions available. 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. Low Level Output Current. Understand, this dattasheet a typical example of application, not it’s sole purpose.
My first question is more important The LED can be chosen at random by the status of the datawheet line selector inputs. Home Questions Tags Users Unanswered.
That is, for an input ofthe 0 output is selected, and it is driven low. Y Input clamping diodes simplify system design. According to the internal logic diagram on the datasheet, the G inputs are connected to a two-input AND gate with inverting inputs, whose output feeds one input of all the NAND gates that produce the outputs.
Y Decodes 4 binary-coded inputs into one of 16 mutually. Operating Free Air Temperature Range.