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. 145-0014
Mfr. Part No.SN74LS156N
kr 7,122
Each (In a Tube of 25)
Units
LS Decoder, Demultiplexer 1-of-4, 1-of-8 1, 2 2 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. 178-9169
Mfr. Part No.SN74ALS139DR
kr 9,723
Each (In a Tube of 40)
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. 806-1416
Mfr. Part No.MC74HC139ADG
kr 2,902
Each (In a Pack of 48)
Units
74HC Decoder, Demultiplexer 1-of-4 2 2 3 State Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 145-0396
Mfr. Part No.CD74ACT138M
kr 5,578
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. 802-1358
Mfr. Part No.74VHC138M
kr 4,823
Each (In a Tube of 48)
Units
VHC Decoder, Demultiplexer 3-to-8 - 1 - - Surface Mount SOIC 16 10 x 3.988 x 1.499mm 1.499mm 10mm 5.5 V
RS Stock No. 825-3192
Mfr. Part No.74AC11138D
kr 24,606
Each (In a Pack of 5)
Units
AC Decoder, Demultiplexer 3-of-8 9 3 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10.5mm 5.5 V
RS Stock No. 145-2971
Mfr. Part No.MC74ACT138DG
kr 3,747
Each (In a Tube of 48)
Units
74ACT Decoder, Demultiplexer 1-of-8 1 3 CMOS Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 5.5 V
RS Stock No. 186-8793
Mfr. Part No.74AC138MTC
kr 3,434
Each (In a Tube of 96)
Units
AC Decoder, Demultiplexer 1-of-8 - - - - Surface Mount TSSOP 16 5 x 4.5 x 0.95mm 0.95mm 5mm 6 V
RS Stock No. 145-0668
Mfr. Part No.SN74LS42N
kr 17,092
Each (In a Tube of 25)
Units
LS Decoder, Demultiplexer 1-of-10 1 0 - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 184-4278
Mfr. Part No.MC74HC238ADG
kr 2,544
Each (In a Tube of 48)
Units
74HC Decoder, Demultiplexer 1-of-8 1 3 CMOS, LSTTL Non-Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 6 V
RS Stock No. 162-7376
Mfr. Part No.SN74HC139PW
kr 0,984
Each (In a Tube of 90)
Units
HC Decoder, Demultiplexer 1-of-4 2 1 - Inverting Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 1.15mm 5mm 6 V
RS Stock No. 170-5357
Mfr. Part No.74HC4851PW,118
BrandNexperia
kr 5,053
Each (In a Pack of 25)
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 6 V
RS Stock No. 709-2160
Mfr. Part No.SN74LS247N
kr 19,66
Each (In a Pack of 5)
Units
LS 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. 171-3332
Mfr. Part No.74VHC238FT
BrandToshiba
kr 0,798
Each (On a Reel of 2500)
Units
74VHC Decoder 3-of-8 42 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 145-5318
Mfr. Part No.74LCX138MTC
kr 3,424
Each (In a Tube of 94)
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. 152-5529
Mfr. Part No.74HC4852D,118
BrandNexperia
kr 2,136
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. 136-4884
Mfr. Part No.74HC138D,653
BrandNexperia
kr 1,563
Each (In a Pack of 100)
Units
74HC Decoder, Demultiplexer 3-to-8 16 3 Single Ended Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 5.5 V
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
kr 5,264
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. 709-1983
Mfr. Part No.SN74HCT138N
kr 4,905
Each (In a Pack of 10)
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. 103-8389
Mfr. Part No.HEF4013BT,652
BrandNexperia
kr 3,157
Each (In a Tube of 57)
Units
4000 D Type - 2 - - Inverting, Non-Inverting Surface Mount SOIC 14 8.75 x 4 x 1.45mm 1.45mm 8.75mm 15 V
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