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. 806-3740
Mfr. Part No.MC74LCX139DTR2G
R 4.876
Each (On a Tape of 50)
units
LCX Decoder, Demultiplexer 2-of-4 2 2 Single Ended Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 3.6 V
RS stock no. 145-4248
Mfr. Part No.MC74LCX139DTR2G
R 1.66
Each (On a Reel of 2500)
units
LCX Decoder, Demultiplexer 2-of-4 2 2 Single Ended Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 3.6 V
RS stock no. 125-0024
Mfr. Part No.MC14511BDG
R 2.186
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. 806-2166
Mfr. Part No.MC74AC139DG
R 2.049
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. 806-1075
Mfr. Part No.NC7SZ18P6X
R 1.551
Each (In a Pack of 25)
units
TinyLogic UHS Demultiplexer 1-of-2 2 1 3 State Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 1mm 1mm 2mm 5.5 V
RS stock no. 163-0548
Mfr. Part No.MC14543BDR2G
R 2.468
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
RS stock no. 166-3190
Mfr. Part No.NC7SZ18P6X
R 1.524
Each (On a Reel of 3000)
units
TinyLogic UHS Demultiplexer 1-of-2 2 1 3 State Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 1mm 1mm 2mm 5.5 V
RS stock no. 806-3309
Mfr. Part No.MC14543BDR2G
R 4.884
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. 184-4262
Mfr. Part No.MC14543BDG
R 3.745
Each (In a Tube of 48)
units
4000 Decoder - 1 1 Single Ended Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm +18 V
RS stock no. 806-1508
Mfr. Part No.MC74HC238ADR2G
R 1.185
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. 802-1733
Mfr. Part No.NL7SZ19DFT2G
R 0.983
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. 908-0800
Mfr. Part No.MC100EP56DWG
R 77.57
Each
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. 184-4278
Mfr. Part No.MC74HC238ADG
R 2.738
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. 145-4187
Mfr. Part No.NL7SZ19DFT2G
R 0.974
Each (On a Reel of 3000)
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. 806-2163
Mfr. Part No.MC74AC138DG
R 2.891
Each (In a Pack of 25)
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. 163-0573
Mfr. Part No.MC74AC138DG
R 2.021
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. 145-4056
Mfr. Part No.MC100EP56DWG
R 77.648
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. 145-4239
Mfr. Part No.MC74HC238ADR2G
R 1.169
Each (On a Reel of 2500)
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. 163-0612
Mfr. Part No.MC74LCX138DR2G
R 1.891
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. 806-3737
Mfr. Part No.MC74LCX138DR2G
R 1.925
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