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. 540-7759
Mfr. Part No.TC74HC138AF(F)
BrandToshiba
SGD1.184
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 6 V
RS Stock No. 756-3078
Mfr. Part No.TC74VHC139FT(EL,K)
BrandToshiba
SGD0.492
Each (In a Pack of 10)
units
74VHC Decoder 2-of-4 17 1 - Inverting Surface Mount TSSOP 16 5.4 x 4.4 x 1mm 1mm 5.4mm 5.5 V
RS Stock No. 541-9314
Mfr. Part No.TC74HC42AF(F)
BrandToshiba
SGD0.94
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-10 1 0 - Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 6 V
RS Stock No. 171-3405
Mfr. Part No.74VHCT138AFT
BrandToshiba
SGD0.345
Each (In a Pack of 50)
units
74VHC Decoder 3-of-8 36 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 601-4291
Mfr. Part No.TC74VCX138FT
BrandToshiba
SGD1.242
Each (In a Pack of 5)
units
VCX 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. 171-3433
Mfr. Part No.74VHC138FT
BrandToshiba
SGD0.30
Each (In a Pack of 50)
units
74VHC Decoder 3-of-8 34 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 171-3447
Mfr. Part No.74VHC139FT
BrandToshiba
SGD0.302
Each (In a Pack of 50)
units
74VHC Decoder 2-of-4 17 1 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 171-3556
Mfr. Part No.74HC138D
BrandToshiba
SGD0.296
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. 756-3283
Mfr. Part No.TC7SB3157CFU(T5L,F
BrandToshiba
SGD0.394
Each (In a Pack of 10)
units
LVCMOS, LVTTL Demultiplexer 1-of-2 2 - - Inverting Surface Mount SSOP 6 2 x 1.25 x 0.9mm 0.9mm 2mm 5.5 V
RS Stock No. 756-3277
Mfr. Part No.TC7MBL6353SFK(EL)
BrandToshiba
SGD1.11
Each (In a Pack of 5)
units
- Demultiplexer 1-of-2 10 2 - Inverting Surface Mount VSSOP 14 4.25 x 3 x 0.8mm 0.8mm 4.25mm 3.6 V
RS Stock No. 539-9513
Mfr. Part No.TC74HC138AP(F)
BrandToshiba
SGD1.052
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. 171-3478
Mfr. Part No.74VHC238FT
BrandToshiba
SGD0.302
Each (In a Pack of 50)
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. 171-3517
Mfr. Part No.74LCX138FT
BrandToshiba
SGD0.386
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. 171-3382
Mfr. Part No.74HC138D
BrandToshiba
SGD0.165
Each (On a Reel of 2500)
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. 171-3320
Mfr. Part No.74VHC139FT
BrandToshiba
SGD0.186
Each (On a Reel of 2500)
units
74VHC Decoder 2-of-4 17 1 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V
RS Stock No. 601-4083
Mfr. Part No.TC4511BF(F)
BrandToshiba
SGD2.74
Each (In a Pack of 5)
units
4000 Decoder, Driver - 1 1 - Non-Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 18 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. 756-3249
Mfr. Part No.TC7MB3253FK(EL)
BrandToshiba
SGD1.584
Each (In a Pack of 5)
units
- Demultiplexer 1-of-4 14 1 - Inverting Surface Mount VSSOP 16 4.25 x 3 x 0.8mm 0.8mm 4.25mm 5.5 V
RS Stock No. 756-3006
Mfr. Part No.TC74LCX138F(K,F)
BrandToshiba
SGD0.608
Each (In a Pack of 5)
units
74LCX Decoder 3-of-8 34 3 - Inverting Surface Mount SOP 16 10.8 x 5.3 x 1.5mm 1.5mm 10.8mm 3.6 V
RS Stock No. 171-3360
Mfr. Part No.74VHCT138AFT
BrandToshiba
SGD0.201
Each (On a Reel of 2500)
units
74VHC Decoder 3-of-8 36 3 TTL Inverting Surface Mount TSSOP 16 5 x 4.4 x 1mm 1mm 5mm 5.5 V