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.

Decoder:
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. 860-7296
Mfr. Part No.M74HC151YRM13TR
TWD11.10
Each (In a Pack of 20)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm 6 V
RS Stock No. 168-8787
Mfr. Part No.M74HC151YRM13TR
TWD5.50
Each (On a Reel of 2500)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm 6 V
RS Stock No. 165-5506
Mfr. Part No.HCF4051YM013TR
TWD4.40
Each (On a Reel of 2500)
units
- - - - - - - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm -
RS Stock No. 880-5282
Mfr. Part No.HCF4051YM013TR
TWD9.90
Each (In a Pack of 50)
units
- - - - - - - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm -
RS Stock No. 860-7309
Mfr. Part No.M74HC151YTTR
TWD10.80
Each (In a Pack of 20)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount TSSOP 16 5.1 x 4.48 x 1.05mm 1.05mm 5.1mm 6 V
RS Stock No. 178-5190
Mfr. Part No.M74HC151YTTR
TWD8.10
Each (On a Reel of 2500)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount TSSOP 16 5.1 x 4.48 x 1.05mm 1.05mm 5.1mm 6 V