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
New
RS Stock No. 186-8849
Mfr. Part No.MC14511BDR2G
HK$1.68
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 806-3309
Mfr. Part No.MC14543BDR2G
HK$1.966
Each (In a Pack of 25)
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. 806-3813
Mfr. Part No.MC74LVX138DR2G
HK$0.882
Each (On a Tape of 50)
units
LVX Decoder 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. 806-3166
Mfr. Part No.MC14028BDR2G
HK$2.617
Each (On a Tape of 25)
units
MC140 Decoder 1-of-10 1 4 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 18 V
RS Stock No. 803-0885
Mfr. Part No.74LCX138BQX
HK$2.245
Each (In a Pack of 20)
units
LCX Decoder, Demultiplexer 1-of-8 1 1 3 State Inverting Surface Mount DQFN 16 3.5 x 2.5 x 0.75mm 0.75mm 3.5mm 3.6 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. 145-4584
Mfr. Part No.74VHCT138AMTC
HK$2.535
Each (In a Tube of 94)
units
VHC Decoder, Demultiplexer 1-of-8 1 1 - - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 0.9mm 5mm 5.5 V
RS Stock No. 163-0573
Mfr. Part No.MC74AC138DG
HK$1.755
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. 808-0089
Mfr. Part No.MC74HC138ADTR2G
HK$1.265
Each (In a Pack of 200)
units
HC Decoder, Demultiplexer 1-of-8 1 1 CMOS Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 6 V
New
RS Stock No. 186-9382
Mfr. Part No.MC74HCT138ADG
HK$3.645
Each (In a Pack of 25)
units
- - - - - - - - - - - - - -
RS Stock No. 806-3737
Mfr. Part No.MC74LCX138DR2G
HK$2.539
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. 163-0612
Mfr. Part No.MC74LCX138DR2G
HK$1.495
Each (On a Reel of 2500)
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. 145-4056
Mfr. Part No.MC100EP56DWG
HK$63.724
Each (In a Tube of 38)
units
ECL Decoder 1-of-2 2 - ECL - Surface Mount SOIC 20 12.95 x 7.6 x 2.4mm 2.4mm 12.95mm -
RS Stock No. 671-1740
Mfr. Part No.MM74HC138M
HK$4.426
Each (In a Pack of 5)
units
HC 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. 170-3561
Mfr. Part No.MC74HC138ADR2G
HK$0.911
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. 671-1582
Mfr. Part No.74LCX138M
HK$4.25
Each (In a Pack of 5)
units
LCX Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 3.6 V
RS Stock No. 145-4506
Mfr. Part No.MM74HC138M
HK$1.979
Each (In a Tube of 48)
units
HC 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. 145-5318
Mfr. Part No.74LCX138MTC
HK$1.864
Each (In a Tube of 94)
units
LCX Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 0.9mm 5mm 3.6 V
RS Stock No. 166-2474
Mfr. Part No.FSAL200MTCX
HK$4.856
Each (On a Reel of 2500)
units
TCX Demultiplexer, Multiplexer 1-of-2 4 2 CMOS - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 0.9mm 5mm 5.5 V
RS Stock No. 671-1539
Mfr. Part No.74ACT138SC
HK$3.063
Each (In a Pack of 20)
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