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 806-1508
Référence fabricantMC74HC238ADR2G
0,246 €
Each (In a Pack of 50)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
N° de stock RS 709-1983
Référence fabricantSN74HCT138N
0,395 €
Each (In a Pack of 10)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 145-0073
Référence fabricantSN74ALS138AN
0,69 €
Each (In a Tube of 25)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +70 °C - 4.5 V 0 °C -
N° de stock RS 145-2971
Référence fabricantMC74ACT138DG
0,129 €
Each (In a Tube of 48)
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 102-5740
Référence fabricantLM567CM/NOPB
1,653 €
Each (In a Tube of 95)
Unité
0.5MHz Bipolar - - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 9 V +70 °C - 4.75 V 0 °C -
N° de stock RS 124-2261
Référence fabricant74HC4514D,652
MarqueNexperia
0,99 €
Each (In a Tube of 30)
Unité
- - - - Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 178-9211
Référence fabricantSN74LS47D
1,359 €
Each (In a Tube of 40)
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 663-1931
Référence fabricantSN74HC139PW
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 806-3311
Référence fabricantMC14555BDG
0,49 €
Each (In a Pack of 20)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C - 3 V -55 °C -
N° de stock RS 368-7329
Référence fabricantHEF4028BT,652
MarqueNexperia
0,312 €
Each (In a Tube of 50)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C -
N° de stock RS 144-9994
Référence fabricantSN74HCT138N
0,395 €
Each (In a Tube of 25)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 885-0702
Référence fabricantHT12D-18DIP
MarqueHoltek
0,588 €
Each (In a Tube of 25)
Unité
- - - - Through Hole PDIP 18 23.37 x 7.11 x 4.95mm 12 V +75 °C - 2.4 V -20 °C -
N° de stock RS 761-4306
Référence fabricant74ACT138SCX
0,468 €
Each (On a Tape of 10)
Unité
- - - - Surface Mount SOIC 16 10 x 6.198 x 1.499mm 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 121-9249
Référence fabricantSN74LS247N
1,387 €
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 170-5438
Référence fabricant74LVC138APW,118
MarqueNexperia
0,233 €
Each (In a Pack of 25)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 3.6 V +125 °C - 1.2 V -40 °C -
N° de stock RS 806-1416
Référence fabricantMC74HC139ADG
0,264 €
Each (In a Pack of 48)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
N° de stock RS 165-8613
Référence fabricant74LVC1G157GV,125
MarqueNexperia
0,045 €
Each (On a Reel of 3000)
Unité
- - - - Surface Mount SC-74 6 3.1 x 1.7 x 1mm 5.5 V +125 °C - 1.65 V -40 °C -
N° de stock RS 806-2270
Référence fabricantMC74ACT138DG
0,35 €
Each (In a Pack of 25)
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 171-3405
Référence fabricant74VHCT138AFT
MarqueToshiba
0,10 €
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 171-3291
Référence fabricant74LCX138FT
MarqueToshiba
0,082 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1mm 3.6 V +125 °C AEC-Q100 1.65 V -40 °C -