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 Price 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
RS Stock No. 122-0107
Mfr. Part No.MC74HC138ADG
€0.23
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS Stock No. 806-1413
Mfr. Part No.MC74HC138ADR2G
€0.271
Each (On a Tape of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS Stock No. 806-3298
Mfr. Part No.MC14532BDG
€0.562
Each (In a Pack of 20)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C - 3 V -55 °C -
RS Stock No. 170-3561
Mfr. Part No.MC74HC138ADR2G
€0.083
Each (On a Reel of 2500)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS Stock No. 145-2978
Mfr. Part No.MC14532BDG
€0.562
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C - 3 V -55 °C -
RS Stock No. 689-8709
Mfr. Part No.MC74HC138ADG
€0.314
Each (In a Pack of 5)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS Stock No. 671-1490
Mfr. Part No.74AC138SC
€0.508
Each (In a Pack of 5)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +85 °C - 2 V -40 °C -
RS Stock No. 671-1582
Mfr. Part No.74LCX138M
€0.532
Each (In a Pack of 5)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 3.6 V +85 °C - 2 V -40 °C -
RS Stock No. 145-4506
Mfr. Part No.MM74HC138M
€0.429
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V 85 °C - 2 V -40 °C -
RS Stock No. 186-8881
Mfr. Part No.MC74VHC138DG
€0.301
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS Stock No. 166-1644
Mfr. Part No.FSAL200QSCX
€0.445
Each (On a Reel of 2500)
units
- - - - Surface Mount QSOP 16 5 x 3.9 x 1.357mm 5.5 V +85 °C - 3 V -40 °C -
RS Stock No. 166-1972
Mfr. Part No.74ACT139SCX
€0.243
Each (On a Reel of 2500)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V +85 °C - 4.5 V -40 °C -
RS Stock No. 163-0548
Mfr. Part No.MC14543BDR2G
€0.125
Each (On a Reel of 2500)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C - -0.5 V -55 °C -
RS Stock No. 186-9151
Mfr. Part No.MC14511BDR2G
€0.384
Each (In a Pack of 25)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C AEC-Q100 3 V -55 °C -
RS Stock No. 163-0550
Mfr. Part No.MC14555BDG
€0.482
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 18 V +125 °C - 3 V -55 °C -
RS Stock No. 806-2166
Mfr. Part No.MC74AC139DG
€0.336
Each (In a Pack of 25)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +85 °C - 2 V -40 °C -
RS Stock No. 145-4496
Mfr. Part No.74ACT138SC
€0.435
Each (In a Tube of 48)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V 85 °C - 4.5 V -40 °C -
RS Stock No. 166-2474
Mfr. Part No.FSAL200MTCX
€0.421
Each (On a Reel of 2500)
units
- - - - Surface Mount TSSOP 16 5 x 4.4 x 0.9mm 5.5 V +85 °C - 3 V -40 °C -
RS Stock No. 806-3731
Mfr. Part No.MC74LCX138DTG
€0.262
Each (In a Pack of 50)
units
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 3.6 V +85 °C - 2 V -40 °C -
RS Stock No. 806-2270
Mfr. Part No.MC74ACT138DG
€0.35
Each (In a Pack of 25)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V +85 °C - 4.5 V -40 °C -