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. 443-047
Mfr. Part No.SN74HC139N
kr 11,96
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. 663-0045
Mfr. Part No.CD74HC138M
kr 5,624
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. 144-9900
Mfr. Part No.SN74HC139N
kr 3,182
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. 806-2166
Mfr. Part No.MC74AC139DG
kr 3,749
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. 162-6504
Mfr. Part No.CD4511BPW
kr 3,869
Each (In a Tube of 90)
Units
4000 Decoder 4-of-7 1 4 CMOS Non-Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 18 V
RS Stock No. 633-969
Mfr. Part No.CD74HCT42E
kr 10,67
Each
Units
HCT Decoder, Demultiplexer 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 526-509
Mfr. Part No.SN74LS138D
kr 7,166
Each (In a Tube of 40)
Units
LS Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.25 V
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
kr 5,264
Each (In a Pack of 5)
Units
AC 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. 163-0573
Mfr. Part No.MC74AC138DG
kr 3,747
Each (In a Tube of 48)
Units
74AC 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. 171-3360
Mfr. Part No.74VHCT138AFT
BrandToshiba
kr 0,83
Each (On a Reel of 2500)
Units
74VHC Decoder 3-of-8 36 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 145-6405
Mfr. Part No.SN74LS156D
kr 3,264
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. 709-2034
Mfr. Part No.CD74HC238E
kr 4,905
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. 806-1508
Mfr. Part No.MC74HC238ADR2G
kr 2,556
Each (In a Pack of 50)
Units
74HC Decoder, Demultiplexer 1-of-8 1 3 3 State Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 923-2486
Mfr. Part No.SN74HC138N
kr 3,206
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
RS Stock No. 806-3260
Mfr. Part No.MC14511BDWR2G
kr 5,509
Each (On a Tape of 20)
Units
MC140 Decoder, Driver, Latch 1-of-4 1 4 CMOS Non-Inverting Surface Mount SOIC W 16 10.45 x 7.6 x 2.4mm 2.4mm 10.45mm 18 V
RS Stock No. 145-7828
Mfr. Part No.74AC11138D
kr 21,089
Each (In a Tube of 40)
Units
AC Decoder, Demultiplexer 3-of-8 9 3 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10.5mm 5.5 V
RS Stock No. 806-3737
Mfr. Part No.MC74LCX138DR2G
kr 3,478
Each (On a Tape of 25)
Units
LCX Decoder, Demultiplexer 3-of-8 1 3 Single Ended Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 3.6 V
RS Stock No. 184-4278
Mfr. Part No.MC74HC238ADG
kr 2,544
Each (In a Tube of 48)
Units
74HC Decoder, Demultiplexer 1-of-8 1 3 CMOS, LSTTL Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 145-4496
Mfr. Part No.74ACT138SC
kr 4,393
Each (In a Tube of 48)
Units
ACT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 163-0548
Mfr. Part No.MC14543BDR2G
kr 1,269
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
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