Decoders & Demultiplexers

The difference between decoders and demultiplexers is that demultiplexers select an output line. A decoder takes in inputs and uses those inputs to determine which of the 2N outputs lines is high.

digital circuit that converts an input binary code into a single numeric output
binary code input
only one output activated at a time
A decoder has:
N inputs
2N outputs
A decoder selects one of 2N outputs by decoding the binary value on the N inputs. The decoder generates all of the minterms of the N input variables. Exactly one output will be active for each combination of the inputs.
Demultiplexer (demux):
receives the output signals from the multiplexer and the receiver end it converts them back to the original form

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Description Price Logic Family Logic Function Demultiplexing Capability Number of Elements per Chip Number of Input Enables per Element Output Type Polarity Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage
RS Stock No. 379-2011
Mfr. Part No.HCS512-I/P
Each (In a Pack of 5)
CMOS, TTL - - - - - - Through Hole PDIP 18 22.86 x 6.35 x 3.3mm 3.3mm 22.86mm -
RS Stock No. 178-4855
Mfr. Part No.HCS512-I/P
Each (In a Tube of 25)
CMOS, TTL - - - - - - Through Hole PDIP 18 22.86 x 6.35 x 3.3mm 3.3mm 22.86mm -