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. 885-0702
Mfr. Part No.HT12D-18DIP
BrandHoltek
PHP40.154
Each (In a Tube of 25)
units
HT12 Decoder 1-of-8 1 8 CMOS - Through Hole PDIP 18 23.37 x 7.11 x 4.95mm 4.95mm 23.37mm 12 V
RS Stock No. 922-2903
Mfr. Part No.CD4511BEE4
PHP12.459
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. 662-9698
Mfr. Part No.CD4511BE
PHP23.82
Each (In a Pack of 5)
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. 709-2034
Mfr. Part No.CD74HC238E
PHP22.857
Each (In a Pack of 10)
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. 144-9997
Mfr. Part No.CD74HC238E
PHP20.571
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. 368-6039
Mfr. Part No.SN74LS138N
PHP33.61
Each (In a Tube of 25)
units
LS Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 121-9249
Mfr. Part No.SN74LS247N
PHP72.988
Each (In a Tube of 25)
units
LS Decoder, Driver - 1 0 Open Collector Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 709-2160
Mfr. Part No.SN74LS247N
PHP85.956
Each (In a Pack of 5)
units
LS Decoder, Driver - 1 0 Open Collector Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 539-9383
Mfr. Part No.TC74HC42AP(F)
BrandToshiba
PHP19.116
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm 6 V
RS Stock No. 885-0705
Mfr. Part No.HT12D-20SOP
BrandHoltek
PHP41.981
Each (In a Tube of 38)
units
HT12 Decoder 1-of-8 1 8 CMOS - Surface Mount SOP 20 12.8 x 7.5 x 2.35mm 2.35mm 12.8mm 12 V
RS Stock No. 798-9023
Mfr. Part No.74HC138S16-13
PHP16.922
Each (In a Pack of 25)
units
HC Decoder, Demultiplexer 3-of-8 8 6 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 122-2833
Mfr. Part No.74HC138S16-13
PHP6.099
Each (On a Reel of 2500)
units
HC Decoder, Demultiplexer 3-of-8 8 6 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 528-066
Mfr. Part No.SN74HCT138D
PHP17.27
Each (In a Tube of 40)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 170-8004
Mfr. Part No.74HC238D,653
BrandNexperia
PHP8.978
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. 662-8269
Mfr. Part No.SN74HCT138DR
PHP14.449
Each (In a Pack of 10)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 662-7077
Mfr. Part No.CD74HC238M96
PHP16.806
Each (In a Pack of 10)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 103-5683
Mfr. Part No.74HC238D,652
BrandNexperia
PHP25.41
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. 527-823
Mfr. Part No.CD74HC238M
PHP22.517
Each (In a Tube of 40)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 483-6487
Mfr. Part No.74HC238D,652
BrandNexperia
PHP12.857
Each (In a Pack of 10)
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. 526-921
Mfr. Part No.SN74HC139D
PHP15.256
Each (In a Tube of 40)
units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
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