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. 526-921
Mfr. Part No.SN74HC139D
R 6.874
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
RS stock no. 662-8102
Mfr. Part No.SN74HC139DR
R 1.644
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. 663-2818
Mfr. Part No.SN74LVC138APW
R 6.546
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 3.6 V
RS stock no. 662-8626
Mfr. Part No.SN74LVC138APWR
R 4.58
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 3.6 V
RS stock no. 885-0702
Mfr. Part No.HT12D-18DIP
BrandHoltek
R 18.385
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. 526-600
Mfr. Part No.SN74F138D
R 4.52
Each (In a Pack of 20)
units
F 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. 170-7971
Mfr. Part No.HEF4013BT,653
BrandNexperia
R 1.703
Each (On a Reel of 2500)
units
HEF D Type - 2 - Buffer - Surface Mount SO 14 8.75 x 4 x 1.45mm 1.45mm 8.75mm 15 V
RS stock no. 103-8389
Mfr. Part No.HEF4013BT,652
BrandNexperia
R 6.185
Each (In a Tube of 57)
units
4000 D Type - 2 - - Inverting, Non-Inverting Surface Mount SOIC 14 8.75 x 4 x 1.45mm 1.45mm 8.75mm 15 V
RS stock no. 145-6686
Mfr. Part No.SN74F138D
R 7.441
Each (In a Tube of 40)
units
F 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. 806-2166
Mfr. Part No.MC74AC139DG
R 6.629
Each (In a Pack of 25)
units
74AC Decoder, Demultiplexer 1-of-4 2 2 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS stock no. 125-0024
Mfr. Part No.MC14511BDG
R 7.492
Each (In a Tube of 48)
units
MC140 Decoder, Driver, Latch 1-of-4 1 4 CMOS Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 18 V
RS stock no. 436-7537
Mfr. Part No.74HC237D,652
BrandNexperia
R 8.289
Each (In a Tube of 50)
units
HC Decoder, Demultiplexer 1-of-8 1 1 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS stock no. 781-2831
Mfr. Part No.74HC4514D,652
BrandNexperia
R 18.501
Each (In a Pack of 10)
units
74HC Decoder, Demultiplexer 4-of-16 1 2 - Non-Inverting Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 2.45mm 15.6mm 6 V
RS stock no. 709-2160
Mfr. Part No.SN74LS247N
R 30.048
Each (In a Pack of 5)
units
LS Decoder, Driver - 1 - 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. 121-9249
Mfr. Part No.SN74LS247N
R 24.933
Each (In a Tube of 25)
units
LS Decoder, Driver - 1 - 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. 184-4262
Mfr. Part No.MC14543BDG
R 5.805
Each (In a Tube of 48)
units
4000 Decoder - 1 1 Single Ended Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm +18 V
RS stock no. 307-575
Mfr. Part No.SN74LS42N
R 38.26
Each
units
LS Decoder, Demultiplexer 1-of-10 1 - - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS stock no. 163-0548
Mfr. Part No.MC14543BDR2G
R 2.351
Each (On a Reel of 2500)
units
MC140 Decoder - 1 1 Single Ended Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 18 V
RS stock no. 806-1075
Mfr. Part No.NC7SZ18P6X
R 0.986
Each (In a Pack of 25)
units
TinyLogic UHS Demultiplexer 1-of-2 2 1 3 State Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 1mm 1mm 2mm 5.5 V
RS stock no. 885-0705
Mfr. Part No.HT12D-20SOP
BrandHoltek
R 12.186
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