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. 171-3332
Mfr. Part No.74VHC238FT
BrandToshiba
HK$0.962
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. 171-3320
Mfr. Part No.74VHC139FT
BrandToshiba
HK$0.992
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. 541-9847
Mfr. Part No.TC74AC138F(F)
BrandToshiba
HK$3.77
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. 756-3283
Mfr. Part No.TC7SB3157CFU(T5L,F
BrandToshiba
HK$4.816
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. 539-8598
Mfr. Part No.TC74AC138P(F)
BrandToshiba
HK$8.21
Each (In a Pack of 5)
units
AC Decoder, Demultiplexer 1-of-8 1 3 - Inverting Through Hole PDIP 16 19.25 x 6.4 x 3.5mm 3.5mm 19.25mm 5.5 V
RS Stock No. 406-3409
Mfr. Part No.TC74LCX138FT
BrandToshiba
HK$2.76
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. 540-7759
Mfr. Part No.TC74HC138AF(F)
BrandToshiba
HK$2.574
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. 171-3318
Mfr. Part No.74VHC138FT
BrandToshiba
HK$0.796
Each (On a Reel of 2500)
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. 756-3277
Mfr. Part No.TC7MBL6353SFK(EL)
BrandToshiba
HK$9.632
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. 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. 541-9314
Mfr. Part No.TC74HC42AF(F)
BrandToshiba
HK$3.426
Each (In a Pack of 5)
units
HC Decoder, Demultiplexer 1-of-10 1 - - Inverting Surface Mount SOP 16 10.3 x 5.3 x 1.5mm 1.5mm 10.3mm 6 V
RS Stock No. 171-3556
Mfr. Part No.74HC138D
BrandToshiba
HK$2.519
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. 171-3382
Mfr. Part No.74HC138D
BrandToshiba
HK$0.942
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. 171-3517
Mfr. Part No.74LCX138FT
BrandToshiba
HK$2.297
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. 171-3478
Mfr. Part No.74VHC238FT
BrandToshiba
HK$1.576
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. 171-3360
Mfr. Part No.74VHCT138AFT
BrandToshiba
HK$1.075
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
RS Stock No. 171-3447
Mfr. Part No.74VHC139FT
BrandToshiba
HK$2.297
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. 756-3264
Mfr. Part No.TC7MBL3257CFK(EL)
BrandToshiba
HK$7.27
Each (In a Pack of 5)
units
- Demultiplexer 1-of-2 7 1 - Inverting Surface Mount VSSOP 16 4.25 x 3 x 0.8mm 0.8mm 4.25mm 3.6 V
RS Stock No. 601-4083
Mfr. Part No.TC4511BF(F)
BrandToshiba
HK$17.748
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. 171-3405
Mfr. Part No.74VHCT138AFT
BrandToshiba
HK$2.668
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