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. 860-7296
Mfr. Part No.M74HC151YRM13TR
SGD0.533
Each (In a Pack of 20)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm 6 V
RS Stock No. 663-2410
Mfr. Part No.SN74LS145D
SGD1.898
Each (In a Pack of 5)
units
LS Decoder, Driver 1-of-10 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. 178-9167
Mfr. Part No.CD74HCT238M96
SGD0.897
Each (In a Tube of 40)
units
HCT 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 5.5 V
RS Stock No. 145-7572
Mfr. Part No.SN74LVC1G18DBVR
SGD0.146
Each (On a Reel of 3000)
units
LVC Demultiplexer 1-of-2 1 1 3 State Non-Inverting Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 5.5 V
New
RS Stock No. 197-7517
Mfr. Part No.SN74LS47N
SGD0.60
Each
units
74LS Decoder - - - - - - PDIP 16 - - - -
RS Stock No. 798-9023
Mfr. Part No.74HC138S16-13
SGD0.579
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. 304-065
Mfr. Part No.SN7445N
SGD4.26
Each
units
74 Decoder, Driver 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 186-8869
Mfr. Part No.MC74HC238ADTG
SGD0.445
Each (In a Tube of 96)
units
HC Decoder, Demultiplexer 1-of-8 - - CMOS - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 6 V dc
RS Stock No. 663-0509
Mfr. Part No.CD74HCT154M
SGD1.49
Each (In a Pack of 5)
units
HCT Decoder, Demultiplexer 1-of-16 1 2 - Inverting Surface Mount SOIC 24 15.4 x 7.52 x 2.35mm 2.35mm 15.4mm 5.5 V
RS Stock No. 171-3291
Mfr. Part No.74LCX138FT
BrandToshiba
SGD0.187
Each (On a Reel of 2500)
units
74LCX Decoder 3-of-8 34 3 CMOS Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 3.6 V
RS Stock No. 146-0557
Mfr. Part No.74LVC1G18GW,125
BrandNexperia
SGD0.143
Each (On a Reel of 3000)
units
74LVC Demultiplexer 1-of-2 1 1 3 State Non-Inverting Surface Mount SC-88 6 2.2 x 1.35 x 1mm 1mm 2.2mm 5.5 V
RS Stock No. 186-8795
Mfr. Part No.74AC139SC
SGD0.817
Each (In a Tube of 48)
units
AC Decoder, Demultiplexer 1-of-4 - - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 756-3078
Mfr. Part No.TC74VHC139FT(EL,K)
BrandToshiba
SGD1.124
Each (In a Pack of 10)
units
74VHC Decoder 2-of-4 17 1 - Inverting Surface Mount TSSOP 16 5.4 x 4.4 x 1mm 1mm 5.4mm 5.5 V
RS Stock No. 171-3433
Mfr. Part No.74VHC138FT
BrandToshiba
SGD0.401
Each (In a Pack of 50)
units
74VHC Decoder 3-of-8 34 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 662-8752
Mfr. Part No.SN74LVC1G19DBVR
SGD0.44
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-2 1 1 - Non-Inverting Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 5.5 V
RS Stock No. 761-4306
Mfr. Part No.74ACT138SCX
SGD0.767
Each (On a Tape of 10)
units
74ACT Decoder, Demultiplexer 1-of-8 15 3 - Inverting Surface Mount SOIC 16 10 x 6.198 x 1.499mm 1.499mm 10mm 5.5 V
RS Stock No. 662-8761
Mfr. Part No.SN74LVC1G19DCKR
SGD0.414
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-2 1 1 - Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 5.5 V
RS Stock No. 663-2549
Mfr. Part No.SN74LS47D
SGD2.558
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. 663-2420
Mfr. Part No.SN74LS155AD
SGD2.23
Each (In a Pack of 5)
units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 Push-Pull Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.25 V
RS Stock No. 145-0082
Mfr. Part No.CD74HCT138M
SGD0.989
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
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