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. 833-428
Mfr. Part No.CD74ACT138M
SGD1.23
Each
units
ACT 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. 170-5337
Mfr. Part No.HEF4051BT,653
BrandNexperia
SGD0.602
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
RS Stock No. 527-158
Mfr. Part No.SN74HC138D
SGD0.485
Each (In a Tube of 40)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 166-1618
Mfr. Part No.MM74HC138MX
SGD0.312
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. 406-3409
Mfr. Part No.TC74LCX138FT
BrandToshiba
SGD0.66
Each
units
LCX Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 3.6 V
RS Stock No. 145-6398
Mfr. Part No.CD74HCT138M96
SGD0.409
Each (On a Reel of 2500)
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. 145-6103
Mfr. Part No.SN7445N
SGD2.431
Each (In a Tube of 25)
units
74 Decoder, Driver 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 671-1585
Mfr. Part No.74LCX138MTC
SGD0.784
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. 145-0396
Mfr. Part No.CD74ACT138M
SGD1.019
Each (In a Tube of 40)
units
ACT 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. 662-8102
Mfr. Part No.SN74HC139DR
SGD0.498
Each (In a Pack of 10)
units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 171-3517
Mfr. Part No.74LCX138FT
BrandToshiba
SGD0.401
Each (In a Pack of 25)
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. 663-0351
Mfr. Part No.CD74HC4511M
SGD1.366
Each (In a Pack of 5)
units
HC Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 6 V
RS Stock No. 122-2833
Mfr. Part No.74HC138S16-13
SGD0.191
Each (On a Reel of 2500)
units
HC Decoder, Demultiplexer 3-of-8 8 6 - Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 162-7452
Mfr. Part No.SN74LVC138ADBR
SGD0.212
Each (On a Reel of 2000)
units
LVC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SSOP 16 6.2 x 5.3 x 1.95mm 1.95mm 6.2mm 3.6 V
RS Stock No. 716-0607
Mfr. Part No.HCTL-2017-A00
BrandBroadcom
SGD30.32
Each
units
- - - - - - - Through Hole PDIP 16 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm -
RS Stock No. 145-5836
Mfr. Part No.74AC11138PW
SGD3.809
Each (In a Tube of 90)
units
AC Decoder, Demultiplexer 3-of-8 1 3 CMOS Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 5.5 V
RS Stock No. 170-7982
Mfr. Part No.74HC4051PW,118
BrandNexperia
SGD0.155
Each (On a Reel of 2500)
units
74HC Demultiplexer, Multiplexer 1-of-8 1 3 Single Ended Non-Inverting Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm 10 V
RS Stock No. 162-7469
Mfr. Part No.SN74LVC1G19DCKR
SGD0.146
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. 662-8430
Mfr. Part No.SN74LV138APWR
SGD0.476
Each (In a Pack of 10)
units
LV 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. 443-031
Mfr. Part No.SN74HC138N
SGD0.52
Each
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
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