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. 662-8758
Mfr. Part No.SN74LVC1G18DCKR
HK$1.962
Each (In a Pack of 10)
units
LVC Demultiplexer 1-of-2 1 1 3 State Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 5.5 V
RS Stock No. 165-5506
Mfr. Part No.HCF4051YM013TR
HK$1.245
Each (On a Reel of 2500)
units
- - - - - - - Surface Mount SOIC 16 10 x 4 x 1.65mm 1.65mm 10mm -
RS Stock No. 152-5529
Mfr. Part No.74HC4852D,118
BrandNexperia
HK$3.08
Each (In a Pack of 10)
units
74HC Demultiplexer, Multiplexer 2-of-8 5 2 CMOS Inverting Surface Mount SO 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
New
RS Stock No. 186-8849
Mfr. Part No.MC14511BDR2G
HK$1.68
Each (On a Reel of 2500)
units
- Decoder - - - NPN - Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 18 V
RS Stock No. 162-7398
Mfr. Part No.SN74HCT138PWR
HK$0.907
Each (On a Reel of 2000)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 5.5 V
RS Stock No. 151-3387
Mfr. Part No.74HC4852D,118
BrandNexperia
HK$2.902
Each (On a Reel of 2500)
units
74HC Demultiplexer, Multiplexer 2-of-8 5 2 CMOS Inverting Surface Mount SO 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 152-6505
Mfr. Part No.74HC4052PW-Q100,11
BrandNexperia
HK$2.89
Each (In a Pack of 25)
units
74HC Demultiplexer, Multiplexer 2-of-8 5 2 CMOS, TTL Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm 11 V
RS Stock No. 136-4813
Mfr. Part No.74HC138D,653
BrandNexperia
HK$0.856
Each (On a Reel of 2500)
units
74HC Decoder, Demultiplexer 3-to-8 16 3 Single Ended Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 5.5 V
RS Stock No. 178-9169
Mfr. Part No.SN74ALS139DR
HK$9.056
Each (In a Tube of 40)
units
ALS Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 689-8709
Mfr. Part No.MC74HC138ADG
HK$2.926
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. 709-2655
Mfr. Part No.SN74LS155ANE4
HK$10.834
Each (In a Pack of 5)
units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 Push-Pull Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 145-6405
Mfr. Part No.SN74LS156D
HK$5.707
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. 136-4884
Mfr. Part No.74HC138D,653
BrandNexperia
HK$1.359
Each (In a Pack of 100)
units
74HC Decoder, Demultiplexer 3-to-8 16 3 Single Ended Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 5.5 V
RS Stock No. 166-2401
Mfr. Part No.74ACT138SCX
HK$1.689
Each (On a Reel of 2500)
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. 170-3561
Mfr. Part No.MC74HC138ADR2G
HK$0.847
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. 171-3517
Mfr. Part No.74LCX138FT
BrandToshiba
HK$2.062
Each (In a Pack of 25)
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. 791-8715
Mfr. Part No.74HC139D,652
BrandNexperia
HK$2.034
Each (In a Pack of 25)
units
HC Decoder, Demultiplexer 2-of-4 2 2 - Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 865-1586
Mfr. Part No.74HCT139D,652
BrandNexperia
HK$2.439
Each (In a Tube of 50)
units
74HC Decoder, Demultiplexer 2-of-4 2 1 CMOS Inverting Surface Mount SOIC 16 6.4 x 5.4 x 1.8mm 1.8mm 6.4mm 5.5 V
RS Stock No. 662-8617
Mfr. Part No.SN74LVC138ADR
HK$2.367
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 3.6 V
RS Stock No. 162-7411
Mfr. Part No.SN74LS155ANE4
HK$7.764
Each (In a Tube of 25)
units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 Push-Pull Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V