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. 145-0006
Mfr. Part No.CD4056BEE4
$0.666
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. 709-2315
Mfr. Part No.CD4056BEE4
$0.928
Each (In a Pack of 10)
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. 121-9249
Mfr. Part No.SN74LS247N
$2.65
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
$2.042
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. 807-2466
Mfr. Part No.CD74HC4511E
$1.24
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. 689-8709
Mfr. Part No.MC74HC138ADG
$0.626
Each (In a Pack of 5)
units
74HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 922-2903
Mfr. Part No.CD4511BEE4
$0.796
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. 806-1413
Mfr. Part No.MC74HC138ADR2G
$0.558
Each (On a Tape of 50)
units
74HC Decoder, Demultiplexer 1-of-8 1 3 3 State Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 662-9698
Mfr. Part No.CD4511BE
$0.99
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. 170-3561
Mfr. Part No.MC74HC138ADR2G
$0.166
Each (On a Reel of 2500)
units
74HC Decoder, Demultiplexer 1-of-8 1 3 3 State Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 122-0107
Mfr. Part No.MC74HC138ADG
$0.472
Each (In a Tube of 48)
units
74HC Decoder, Demultiplexer 1-of-8 1 3 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 663-0045
Mfr. Part No.CD74HC138M
$1.058
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 663-2549
Mfr. Part No.SN74LS47D
$3.406
Each (In a Pack of 5)
units
LS Decoder, Driver - 1 0 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. 662-8102
Mfr. Part No.SN74HC139DR
$0.526
Each (In a Pack of 10)
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
RS Stock No. 162-6945
Mfr. Part No.CD74HC238PWR
$0.277
Each (On a Reel of 2000)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 6 V
RS Stock No. 709-2034
Mfr. Part No.CD74HC238E
$0.563
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. 144-9900
Mfr. Part No.SN74HC139N
$0.745
Each (In a Tube of 25)
units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 443-047
Mfr. Part No.SN74HC139N
$0.75
Each
units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 802-1358
Mfr. Part No.74VHC138M
$0.925
Each (In a Tube of 48)
units
VHC Decoder, Demultiplexer 3-to-8 - 1 - - Surface Mount SOIC 16 10 x 3.988 x 1.499mm 1.499mm 10mm 5.5 V
RS Stock No. 144-9997
Mfr. Part No.CD74HC238E
$0.914
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