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. 144-9997
Mfr. Part No.CD74HC238E
SGD0.786
Each (In a Tube of 25)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 709-2712
Mfr. Part No.CD4555BE
SGD0.734
Each (In a Pack of 10)
units
4000 Decoder, Demultiplexer 1-of-4 2 1 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 304-942
Mfr. Part No.SN74LS259BN
SGD1.76
Each
units
LS - - 1 1 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 145-0025
Mfr. Part No.CD4555BE
SGD0.69
Each (In a Tube of 25)
units
4000 Decoder, Demultiplexer 1-of-4 2 1 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 145-0381
Mfr. Part No.SN74LS259BN
SGD1.47
Each (In a Tube of 25)
units
LS - - 1 1 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 166-1506
Mfr. Part No.74LVC138ABQ,115
BrandNexperia
SGD0.182
Each (On a Reel of 3000)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount DHVQFN 16 3.6 x 2.6 x 0.95mm 0.95mm 3.6mm 3.6 V
RS Stock No. 510-188
Mfr. Part No.74LVC138ABQ,115
BrandNexperia
SGD0.454
Each (In a Pack of 20)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount DHVQFN 16 3.6 x 2.6 x 0.95mm 0.95mm 3.6mm 3.6 V
RS Stock No. 922-2903
Mfr. Part No.CD4511BEE4
SGD0.498
Each (In a Tube of 25)
units
4000 Decoder, Driver - 1 1 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 663-0036
Mfr. Part No.CD74HC138E
SGD0.823
Each (In a Pack of 10)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 791-8715
Mfr. Part No.74HC139D,652
BrandNexperia
SGD0.499
Each (In a Pack of 25)
units
HC Decoder, Demultiplexer 2-of-4 2 2 - Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 146-0417
Mfr. Part No.74HCT154PW,112
BrandNexperia
SGD1.193
Each (In a Tube of 63)
units
74HCT Decoder, Demultiplexer 1-of-16 1 4 CMOS Inverting Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 0.95mm 7.9mm 5.5 V
RS Stock No. 145-6405
Mfr. Part No.SN74LS156D
SGD1.25
Each (In a Tube of 40)
units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 Open Collector Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.25 V
RS Stock No. 816-4648
Mfr. Part No.74HCT154PW,112
BrandNexperia
SGD1.397
Each (In a Pack of 7)
units
74HCT Decoder, Demultiplexer 1-of-16 1 4 CMOS Inverting Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 0.95mm 7.9mm 5.5 V
RS Stock No. 709-2037
Mfr. Part No.CD4028BE
SGD0.697
Each (In a Pack of 10)
units
4000 Decoder, Demultiplexer 1-of-10 1 0 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 178-6970
Mfr. Part No.HEF4543BT,652
BrandNexperia
SGD0.727
Each (In a Tube of 50)
units
4000 Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 15 V
RS Stock No. 103-5683
Mfr. Part No.74HC238D,652
BrandNexperia
SGD0.729
Each (In a Tube of 50)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 807-2466
Mfr. Part No.CD74HC4511E
SGD1.132
Each (In a Pack of 25)
units
HC Decoder, Driver - 1 4 CMOS Non-Inverting Through Hole PDIP 16 19.69 x 6.6 x 4.57mm 4.57mm 19.69mm 6 V
RS Stock No. 663-2439
Mfr. Part No.SN74LS156D
SGD1.48
Each (In a Pack of 5)
units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 Open Collector Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.25 V
RS Stock No. 170-8004
Mfr. Part No.74HC238D,653
BrandNexperia
SGD0.307
Each (On a Reel of 2500)
units
74HC Decoder, Demultiplexer 1-of-8 1 3 Single Ended Non-Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 144-9942
Mfr. Part No.CD74HC138E
SGD0.823
Each (In a Tube of 25)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
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