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. 178-6959
Mfr. Part No.74HC154D,652
BrandNexperia
£0.578
Each (In a Tube of 30)
Units
HC Decoder, Demultiplexer 1-of-16 1 2 - Inverting Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 2.45mm 15.6mm 6 V
RS Stock No. 483-6421
Mfr. Part No.74HC154D,652
BrandNexperia
£0.686
Each (In a Pack of 5)
Units
HC Decoder, Demultiplexer 1-of-16 1 2 - Inverting Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 2.45mm 15.6mm 6 V
RS Stock No. 170-8040
Mfr. Part No.74HC154D,653
BrandNexperia
£0.274
Each (On a Reel of 1000)
Units
74HC Decoder, Demultiplexer 4-of-16 1 2 Single Ended Inverting Surface Mount SO 24 15.6 x 7.6 x 2.45mm 2.45mm 15.6mm 6 V
RS Stock No. 781-2831
Mfr. Part No.74HC4514D,652
BrandNexperia
£0.833
Each (In a Pack of 10)
Units
74HC Decoder, Demultiplexer 4-of-16 1 2 - Non-Inverting Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 2.45mm 15.6mm 6 V
RS Stock No. 923-2486
Mfr. Part No.SN74HC138N
£0.284
Each (In a Tube of 25)
Units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 368-6039
Mfr. Part No.SN74LS138N
£0.559
Each (In a Tube of 25)
Units
LS Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 885-0702
Mfr. Part No.HT12D-18DIP
BrandHoltek
£0.516
Each (In a Tube of 25)
Units
HT12 Decoder 1-of-8 1 8 CMOS - Through Hole PDIP 18 23.37 x 7.11 x 4.95mm 4.95mm 23.37mm 12 V
RS Stock No. 305-406
Mfr. Part No.SN7447AN
£2.53
Each
Units
74 Decoder, Driver - 1 0 Open Collector Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 368-4724
Mfr. Part No.SN7447AN
£2.274
Each (In a Tube of 25)
Units
74 Decoder, Driver - 1 0 Open Collector Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 709-2037
Mfr. Part No.CD4028BEE4
£0.583
Each (In a Pack of 10)
Units
4000 Decoder, Demultiplexer 1-of-10 1 0 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 145-0681
Mfr. Part No.CD74HCT238E
£0.431
Each (In a Tube of 25)
Units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 145-0465
Mfr. Part No.CD4028BEE4
£0.21
Each (In a Tube of 25)
Units
4000 Decoder, Demultiplexer 1-of-10 1 0 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 18 V
RS Stock No. 634-120
Mfr. Part No.CD74HCT238E
£2.01
Each
Units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 144-9900
Mfr. Part No.SN74HC139N
£0.284
Each (In a Tube of 25)
Units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 443-047
Mfr. Part No.SN74HC139N
£2.00
Each
Units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 144-9897
Mfr. Part No.SN74LS139AN
£0.559
Each (In a Tube of 25)
Units
LS Decoder, Demultiplexer 1-of-4 2 1 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 709-2034
Mfr. Part No.CD74HC238EE4
£0.431
Each (In a Pack of 10)
Units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 144-9997
Mfr. Part No.CD74HC238EE4
£0.392
Each (In a Tube of 25)
Units
HC Decoder, Demultiplexer 1-of-8 1 3 - Non-Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 6 V
RS Stock No. 355-9460
Mfr. Part No.HEF4543BT,652
BrandNexperia
£0.12
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. 178-6970
Mfr. Part No.HEF4543BT,652
BrandNexperia
£0.098
Each (In a Tube of 50)
Units
4000 Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 15 V
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