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. 166-1618
Mfr. Part No.MM74HC138MX
PHP10.87
Each (On a Reel of 2500)
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. 184-4262
Mfr. Part No.MC14543BDG
PHP19.32
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. 806-3309
Mfr. Part No.MC14543BDR2G
PHP17.891
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. 163-0548
Mfr. Part No.MC14543BDR2G
PHP7.273
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. 166-1644
Mfr. Part No.FSAL200QSCX
PHP27.41
Each (On a Reel of 2500)
units
SCX Demultiplexer, Multiplexer 1-of-2 4 2 CMOS - Surface Mount QSOP 16 5 x 3.9 x 1.357mm 1.357mm 5mm 5.5 V
RS Stock No. 759-9330
Mfr. Part No.FSAL200QSCX
PHP66.514
Each (In a Pack of 5)
units
SCX Demultiplexer, Multiplexer 1-of-2 4 2 CMOS - Surface Mount QSOP 16 5 x 3.9 x 1.357mm 1.357mm 5mm 5.5 V
RS Stock No. 671-1740
Mfr. Part No.MM74HC138M
PHP33.518
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. 761-4482
Mfr. Part No.MM74HC138MX
PHP24.94
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
RS Stock No. 806-2273
Mfr. Part No.MC74ACT139DG
PHP22.00
Each (In a Pack of 25)
units
74ACT Decoder, Demultiplexer 1-of-4 2 2 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 145-4506
Mfr. Part No.MM74HC138M
PHP28.09
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. 125-0024
Mfr. Part No.MC14511BDG
PHP24.57
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. 806-1413
Mfr. Part No.MC74HC138ADR2G
PHP17.33
Each (On a Tape of 50)
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. 806-3157
Mfr. Part No.MC14028BDG
PHP21.79
Each (In a Pack 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. 671-1585
Mfr. Part No.74LCX138MTC
PHP27.30
Each (In a Pack of 5)
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. 806-1075
Mfr. Part No.NC7SZ18P6X
PHP15.045
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. 163-0511
Mfr. Part No.MC10EP56DTG
PHP479.33
Each (In a Tube of 75)
units
ECL Multiplexer 1-of-2 4 2 ECL - Surface Mount TSSOP 20 6.6 x 4.5 x 1.05mm 1.05mm 6.6mm 5.5 V
RS Stock No. 145-4499
Mfr. Part No.74LCX138M
PHP27.41
Each (In a Tube of 48)
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. 122-0107
Mfr. Part No.MC74HC138ADG
PHP14.70
Each (In a Tube of 48)
units
74HC 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. 671-1490
Mfr. Part No.74AC138SC
PHP31.50
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. 806-3737
Mfr. Part No.MC74LCX138DR2G
PHP19.645
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