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. 807-2466
Mfr. Part No.CD74HC4511E
SGD1.132
Each (In a Pack of 25)
units
HC Decoder, Driver - 1 4 CMOS Non-Inverting Through Hole PDIP 16 19.69 x 6.6 x 4.57mm 4.57mm 19.69mm 6 V
RS Stock No. 663-2439
Mfr. Part No.SN74LS156D
SGD1.48
Each (In a Pack of 5)
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. 709-2037
Mfr. Part No.CD4028BE
SGD1.168
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. 791-8715
Mfr. Part No.74HC139D,652
BrandNexperia
SGD0.499
Each (In a Pack of 25)
units
HC Decoder, Demultiplexer 2-of-4 2 2 - Inverting Surface Mount SOIC 16 10 x 4 x 1.45mm 1.45mm 10mm 6 V
RS Stock No. 663-0036
Mfr. Part No.CD74HC138E
SGD0.823
Each (In a Pack of 10)
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. 816-4648
Mfr. Part No.74HCT154PW,112
BrandNexperia
SGD1.397
Each (In a Pack of 7)
units
74HCT Decoder, Demultiplexer 1-of-16 1 4 CMOS Inverting Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 0.95mm 7.9mm 5.5 V
RS Stock No. 145-0465
Mfr. Part No.CD4028BE
SGD0.422
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. 541-9847
Mfr. Part No.TC74AC138F(F)
BrandToshiba
SGD0.658
Each (In a Pack of 5)
units
AC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 5.5 V
RS Stock No. 662-7888
Mfr. Part No.SN74ALS139DR
SGD1.51
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. 124-2261
Mfr. Part No.74HC4514D,652
BrandNexperia
SGD1.979
Each (In a Tube of 30)
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. 663-1259
Mfr. Part No.SN74AHCT138PW
SGD0.497
Each (In a Pack of 10)
units
AHCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 5.5 V
RS Stock No. 169-7218
Mfr. Part No.74AHC138S16-13
SGD0.191
Each (On a Reel of 2500)
units
AHC Decoder, Demultiplexer 3-of-8 8 6 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 662-7244
Mfr. Part No.CD74HCT138M96
SGD0.821
Each (In a Pack of 10)
units
HCT Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.5 V
RS Stock No. 170-7966
Mfr. Part No.74HC4051D,653
BrandNexperia
SGD0.16
Each (On a Reel of 2500)
units
74HC Demultiplexer, Multiplexer 1-of-8 1 3 Single Ended Non-Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 10 V
RS Stock No. 633-969
Mfr. Part No.CD74HCT42E
SGD1.93
Each
units
HCT Decoder, Demultiplexer 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
SGD0.962
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. 145-0138
Mfr. Part No.CD4056BM
SGD0.659
Each (In a Tube of 40)
units
4000 Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 18 V
RS Stock No. 184-4262
Mfr. Part No.MC14543BDG
SGD0.591
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. 186-8796
Mfr. Part No.74ACT139MTC
SGD0.812
Each (In a Tube of 96)
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. 166-1972
Mfr. Part No.74ACT139SCX
SGD0.327
Each (On a Reel of 2500)
units
ACT Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
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