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. 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
RS Stock No. 809-6220
Mfr. Part No.CD4511BPW
HK$3.039
Each (In a Pack of 15)
units
4000 Decoder 4-of-7 1 4 CMOS Non-Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 18 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. 145-6405
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. 162-6504
Mfr. Part No.CD4511BPW
HK$2.12
Each (In a Tube of 90)
units
4000 Decoder 4-of-7 1 4 CMOS Non-Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 18 V
RS Stock No. 145-0512
Mfr. Part No.CD4028BPW
HK$2.27
Each (In a Tube of 90)
units
4000 Decoder 4-of-10 1 4 CMOS Non-Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 18 V
RS Stock No. 761-4306
Mfr. Part No.74ACT138SCX
HK$4.19
Each (On a Tape of 10)
units
74ACT Decoder, Demultiplexer 1-of-8 15 3 - Inverting Surface Mount SOIC 16 10 x 6.198 x 1.499mm 1.499mm 10mm 5.5 V
RS Stock No. 355-9460
Mfr. Part No.HEF4543BT,652
BrandNexperia
HK$5.12
Each
units
4000 Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 15 V
RS Stock No. 170-5337
Mfr. Part No.HEF4051BT,653
BrandNexperia
HK$2.573
Each (In a Pack of 25)
units
HEF Demultiplexer, Multiplexer 1-of-8 1 3 Single Ended Non-Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 15 V
New
RS Stock No. 186-9243
Mfr. Part No.MC74VHC138DG
HK$3.076
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. 166-1721
Mfr. Part No.NC7SZ19P6X
HK$0.634
Each (On a Reel of 3000)
units
TinyLogic UHS Decoder, Demultiplexer 1-of-2 1 1 - Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 1mm 1mm 2mm 5.5 V
RS Stock No. 171-3291
Mfr. Part No.74LCX138FT
BrandToshiba
HK$1.001
Each (On a Reel of 2500)
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. 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. 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. 663-2111
Mfr. Part No.SN74HC42D
HK$6.198
Each (In a Pack of 10)
units
HC Decoder, Demultiplexer 1-of-10 1 - - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 145-6396
Mfr. Part No.CD74HCT137MT
HK$7.351
Each (On a Reel of 250)
units
HCT Decoder, Demultiplexer 1-of-8 1 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 662-7070
Mfr. Part No.CD74HC238PWR
HK$3.162
Each (In a Pack of 10)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 6 V
RS Stock No. 662-8761
Mfr. Part No.SN74LVC1G19DCKR
HK$1.996
Each (In a Pack of 10)
units
LVC Decoder, Demultiplexer 1-of-2 1 1 - Non-Inverting Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 5.5 V
RS Stock No. 162-4150
Mfr. Part No.CD74HCT138E
HK$3.085
Each (In a Tube of 25)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 540-7759
Mfr. Part No.TC74HC138AF(F)
BrandToshiba
HK$5.754
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 6 V
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