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. 186-9220
Mfr. Part No.MC74HC238ADTG
HK$2.544
Each (In a Pack of 25)
units
HC Decoder, Demultiplexer 1-of-8 - - CMOS - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 1.05mm 5.1mm 6 V dc
RS Stock No. 170-5365
Mfr. Part No.74HC154PW,118
BrandNexperia
HK$8.106
Each (In a Pack of 10)
units
74HC Decoder, Demultiplexer 4-of-16 1 4 Single Ended Inverting Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 0.95mm 7.9mm 6 V
RS Stock No. 170-7999
Mfr. Part No.HEF4053BT,653
BrandNexperia
HK$1.17
Each (On a Reel of 2500)
units
HEF Demultiplexer, Multiplexer 1-of-2 3 3 Single Ended Non-Inverting Surface Mount SO 16 10 x 4 x 1.45mm 1.45mm 10mm 15 V
RS Stock No. 539-9513
Mfr. Part No.TC74HC138AP(F)
BrandToshiba
HK$3.84
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm 6 V
RS Stock No. 541-9695
Mfr. Part No.TC4511BP(F)
BrandToshiba
HK$5.656
Each (In a Pack of 5)
units
4000 Decoder, Driver - 1 1 - Non-Inverting Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm 18 V
RS Stock No. 170-4849
Mfr. Part No.74HCT138D,653
BrandNexperia
HK$1.01
Each (On a Reel of 2500)
units
74HCT Decoder, Demultiplexer 3-of-8 1 3 Single Ended Inverting Surface Mount SO16 16 6.4 x 5.4 x 1.8mm 1.8mm 6.4mm 5.5 V
RS Stock No. 526-509
Mfr. Part No.SN74LS138D
HK$3.83
Each (In a Tube of 40)
units
LS Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 1.58mm 9.9mm 5.25 V
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
HK$5.284
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. 663-0036
Mfr. Part No.CD74HC138E
HK$4.81
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. 483-6718
Mfr. Part No.74HCT238D,652
BrandNexperia
HK$4.707
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
RS Stock No. 145-6103
Mfr. Part No.SN7445N
HK$17.185
Each (In a Tube of 25)
units
74 Decoder, Driver 1-of-10 1 - - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.25 V
RS Stock No. 638-037
Mfr. Part No.SN74ALS138AN
HK$8.39
Each
units
ALS 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. 145-4499
Mfr. Part No.74LCX138M
HK$4.47
Each (In a Tube of 48)
units
LCX Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOIC 16 10 x 4 x 1.5mm 1.5mm 10mm 3.6 V
RS Stock No. 663-2549
Mfr. Part No.SN74LS47D
HK$15.078
Each (In a Pack of 5)
units
LS Decoder, Driver - 1 - 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. 171-3556
Mfr. Part No.74HC138D
BrandToshiba
HK$2.506
Each (In a Pack of 50)
units
74HC Decoder 3-of-8 34 3 CMOS Inverting Surface Mount SOIC 16 10.2 x 3.9 x 1.38mm 1.38mm 10.2mm 6 V
RS Stock No. 633-969
Mfr. Part No.CD74HCT42E
HK$10.27
Each
units
HCT Decoder, Demultiplexer 1-of-10 1 - - Inverting Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm 5.5 V
RS Stock No. 709-2472
Mfr. Part No.SN74LS156N
HK$6.276
Each (In a Pack of 5)
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. 170-5537
Mfr. Part No.74HC238PW,118
BrandNexperia
HK$3.83
Each (In a Pack of 25)
units
74HC Decoder, Demultiplexer 3-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. 663-2439
Mfr. Part No.SN74LS156D
HK$8.39
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. 124-2261
Mfr. Part No.74HC4514D,652
BrandNexperia
HK$10.228
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
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