Encoder & Decoder ICs

Encoders are logic semiconductor ICs (integrated circuits) that have been designed to encode and decode digital binary codes for inputs whilst decoders receive data transmissions in amateur radio frequency bands. They constantly monitor incoming signals for valid DTMF digits. These electronic circuits decode DTMF dial tones from telephone lines into touch-tone phones via a process known as tone dialling.

How do Encoders and Decoders work?

An encoder IC is manufactured to encode digital data from one format type or code to another that can accept multiple inputs and generate multi-bit output. Their primary functions are speed, security, standardisation by shrinking the size.

Decoder ICs increase connectivity in electronics to allow better control of applications. Home units like security alarm systems, electronic gates and garage doors, access control systems and everyday appliances make use of DTMF functionalities.

Types of Encoders and Decoders?

Encoder ICs are available with different encoding types such as Key and priority.

A DTMF (Dual Tone Multi-Frequency) decoder IC is a device that receives data transmissions in amateur radio frequency bands. They constantly monitor incoming signals for valid DTMF digits. These electronic circuits decode DTMF dial tones from telephone lines into touch-tone phones via a process known as tone dialling.

The most common types of DTMF Decoder ICs include 2-tone, 5-tone, multi-tone and burst-tone versions. Multi-tone decoders receive and translate multiple tones from the source whilst Burst-tone versions decode clashing frequencies into binary signals.

As well as being offered with variations of logic families, the number of pins on the IC and different mount types.

Applications of encoders and decoders

Encoders and decoders have an array of application use such as;

  • Smoke and fire alarm system
  • Home security systems
  • Identity tokens
  • Mobile phones and landlines

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Description Prix Operating Frequency Fabrication Technology Typical Supply Current Minimum CMRR Mounting Type Package Type Pin Count Dimensions Maximum Operating Supply Voltage Maximum Operating Temperature Automotive Standard Minimum Operating Supply Voltage Minimum Operating Temperature Number of Elements per Chip
N° de stock RS 526-600
Référence fabricantSN74F138D
0,464 €
Each (In a Pack of 20)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +70 °C - 4.5 V 0 °C -
N° de stock RS 165-8614
Référence fabricant74LVC1G157GW,125
MarqueNexperia
0,046 €
Each (On a Reel of 3000)
Unité
- - - - Surface Mount SC-88 6 2.2 x 1.35 x 1mm 5.5 V +125 °C - 1.65 V -40 °C -
N° de stock RS 663-1928
Référence fabricantSN74HC138PW
0,099 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 6 V +85 °C - 2 V -40 °C -
N° de stock RS 152-6473
Référence fabricant74HC4052PW-Q100,11
MarqueNexperia
0,101 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 11 V +125 °C AEC-Q100 -0.5 V -40 °C -
N° de stock RS 171-3405
Référence fabricant74VHCT138AFT
MarqueToshiba
0,11 €
Each (In a Pack of 50)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1mm 5.5 V +125 °C AEC-Q100 4.5 V -40 °C -
N° de stock RS 200-5286
Référence fabricantAS5045-ASST
Marqueams
6,777 €
Each (On a Reel of 500)
Unité
- - - - - SSOP 16 - - - - - - -
N° de stock RS 178-9159
Référence fabricantCD74HC139M96
0,548 €
Each (In a Tube of 40)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 6 V +125 °C - 2 V -55 °C -
N° de stock RS 178-9194
Référence fabricantSN74AHC138D
0,325 €
Each (In a Tube of 40)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +85 °C - 2 V -40 °C -
N° de stock RS 709-2160
Référence fabricantSN74LS247N
1,794 €
Each (In a Pack of 5)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
N° de stock RS 671-1548
Référence fabricant74ACT139SCX
0,478 €
Each (In a Pack of 20)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 663-2439
Référence fabricantSN74LS156D
0,32 €
Each (In a Pack of 5)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.25 V +70 °C - 4.75 V 0 °C -
N° de stock RS 145-5836
Référence fabricant74AC11138PW
1,102 €
Each (In a Tube of 90)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.5 V +85 °C - 3 V -40 °C -
N° de stock RS 791-8715
Référence fabricant74HC139D,652
MarqueNexperia
0,331 €
Each (In a Pack of 25)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 802-1358
Référence fabricant74VHC138M
0,49 €
Each (In a Tube of 48)
Unité
- - - - Surface Mount SOIC 16 10 x 3.988 x 1.499mm 5.5 V +85 °C - 2 V -40 °C -
N° de stock RS 121-9249
Référence fabricantSN74LS247N
1,526 €
Each (In a Tube of 25)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
N° de stock RS 125-0046
Référence fabricantMC74VHC139DTR2G
0,149 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 5.5 V +125 °C - 2 V -55 °C -
N° de stock RS 368-4724
Référence fabricantSN7447AN
2,541 €
Each (In a Tube of 25)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
N° de stock RS 709-2655
Référence fabricantSN74LS155AN
1,404 €
Each (In a Pack of 5)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
N° de stock RS 178-9169
Référence fabricantSN74ALS139DR
0,975 €
Each (In a Tube of 40)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +70 °C - 4.5 V 0 °C -
N° de stock RS 152-3694
Référence fabricant74LVC1G19GW,125
MarqueNexperia
0,119 €
Each (In a Pack of 100)
Unité
- - - - Surface Mount TSSOP 6 2.2 x 1.35 x 1mm 5.5 V +125 °C - 1.65 V -40 °C -