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. 671-1548
Mfr. Part No.74ACT139SCX
kr 4,327
Each (In a Pack of 20)
Units
ACT Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 184-4278
Mfr. Part No.MC74HC238ADG
kr 2,235
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. 803-0885
Mfr. Part No.74LCX138BQX
kr 1,859
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. 125-0024
Mfr. Part No.MC14511BDG
kr 3,662
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. 166-2474
Mfr. Part No.FSAL200MTCX
kr 4,192
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. 186-9158
Mfr. Part No.74AC139SC
kr 5,065
Each (In a Pack of 25)
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. 145-2971
Mfr. Part No.MC74ACT138DG
kr 1,276
Each (In a Tube of 48)
Units
74ACT Decoder, Demultiplexer 1-of-8 1 3 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 671-1539
Mfr. Part No.74ACT138SC
kr 4,088
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
RS Stock No. 806-1416
Mfr. Part No.MC74HC139ADG
kr 2,58
Each (In a Pack of 48)
Units
74HC Decoder, Demultiplexer 1-of-4 2 2 3 State Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 186-8881
Mfr. Part No.MC74VHC138DG
kr 2,60
Each (In a Tube of 48)
Units
HC Decoder 3-of-8 - - 3 State - Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V dc
RS Stock No. 186-9243
Mfr. Part No.MC74VHC138DG
kr 3,123
Each (In a Pack of 25)
Units
HC Decoder 3-of-8 - - 3 State - Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V dc
RS Stock No. 166-1972
Mfr. Part No.74ACT139SCX
kr 1,98
Each (On a Reel of 2500)
Units
ACT Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 806-3309
Mfr. Part No.MC14543BDR2G
kr 2,808
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. 806-3917
Mfr. Part No.MC74VHC139DTR2G
kr 2,879
Each (In a Pack of 25)
Units
VHC Decoder, Demultiplexer 2-of-4 2 2 3 State, Buffer Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 5.5 V
RS Stock No. 163-0550
Mfr. Part No.MC14555BDG
kr 4,599
Each (In a Tube of 48)
Units
MC140 Decoder, Demultiplexer 1-of-4 2 2 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 18 V
RS Stock No. 186-9220
Mfr. Part No.MC74HC238ADTG
kr 2,72
Each (In a Pack of 25)
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. 802-1733
Mfr. Part No.NL7SZ19DFT2G
kr 0,55
Each (On a Tape of 50)
Units
LCX Decoder, Demultiplexer 1-of-2 1 1 CMOS - Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 5.5 V
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
kr 4,846
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. 759-9336
Mfr. Part No.FSAL200MTCX
kr 9,432
Each (In a Pack of 5)
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. 761-4482
Mfr. Part No.MM74HC138MX
kr 3,998
Each (In a Pack of 10)
Units
74HC Decoder 3-of-8 32 3 - Inverting Surface Mount SOIC 16 10 x 6.198 x 1.499mm 1.499mm 10mm 6 V