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. 146-0557
Mfr. Part No.74LVC1G18GW,125
BrandNexperia
MYR0.389
Each (On a Reel of 3000)
units
74LVC Demultiplexer 1-of-2 1 1 3 State Non-Inverting Surface Mount SC-88 6 2.2 x 1.35 x 1mm 1mm 2.2mm 5.5 V
RS Stock No. 528-195
Mfr. Part No.SN74HCT139D
MYR1.461
Each (In a Tube of 40)
units
HCT Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 662-7888
Mfr. Part No.SN74ALS139DR
MYR4.162
Each (In a Pack of 5)
units
ALS Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 186-9207
Mfr. Part No.74ACT139MTC
MYR2.24
Each (In a Pack of 25)
units
ACT Decoder, Demultiplexer 1-of-4 - 2 - - Surface Mount TSSOP 16 5 x 4.5 x 0.95mm 0.95mm 5mm 5.5 V
RS Stock No. 806-1508
Mfr. Part No.MC74HC238ADR2G
MYR1.17
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. 662-8755
Mfr. Part No.SN74LVC1G18DBVR
MYR1.12
Each (In a Pack of 10)
units
LVC Demultiplexer 1-of-2 1 1 3 State Non-Inverting Surface Mount SOT-23 6 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 5.5 V
RS Stock No. 178-3169
Mfr. Part No.HCTL-2017-A00
BrandBroadcom
MYR85.343
Each (In a Tube of 50)
units
- - - - - - - Through Hole PDIP 16 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm -
RS Stock No. 162-7427
Mfr. Part No.SN74LV139APWR
MYR0.459
Each (On a Reel of 2000)
units
LV Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 5.5 V
RS Stock No. 171-3405
Mfr. Part No.74VHCT138AFT
BrandToshiba
MYR1.388
Each (In a Pack of 50)
units
74VHC Decoder 3-of-8 36 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 436-7537
Mfr. Part No.74HC237D,652
BrandNexperia
MYR2.101
Each (In a Tube of 50)
units
HC Decoder, Demultiplexer 1-of-8 1 1 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 806-3917
Mfr. Part No.MC74VHC139DTR2G
MYR1.51
Each (In a Pack of 25)
units
VHC Decoder, Demultiplexer 2-of-4 2 2 Buffer, 3 State Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 5.5 V
RS Stock No. 860-7309
Mfr. Part No.M74HC151YTTR
MYR1.42
Each (In a Pack of 20)
units
HC Multiplexer 1 x 8:1 8 1 CMOS - Surface Mount TSSOP 16 5.1 x 4.48 x 1.05mm 1.05mm 5.1mm 6 V
RS Stock No. 162-7469
Mfr. Part No.SN74LVC1G19DCKR
MYR0.397
Each (On a Reel of 3000)
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. 663-0376
Mfr. Part No.CD74HC4515M
MYR11.78
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-16 1 1 - Inverting Surface Mount SOIC 24 15.4 x 7.52 x 2.35mm 2.35mm 15.4mm 6 V
RS Stock No. 166-3142
Mfr. Part No.74LCX138BQX
MYR1.04
Each (On a Reel of 3000)
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. 483-6718
Mfr. Part No.74HCT238D,652
BrandNexperia
MYR2.275
Each (In a Pack of 10)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 5.5 V