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 145-0712
Référence fabricantSN74HC138PW
0,097 €
Each (In a Tube of 90)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 6 V +85 °C - 2 V -40 °C -
N° de stock RS 146-0417
Référence fabricant74HCT154PW,112
MarqueNexperia
0,604 €
Each (In a Tube of 63)
Unité
- - - - Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 5.5 V +125 °C - 4.5 V -40 °C -
N° de stock RS 816-8769
Référence fabricant74LVC1G157GW,125
MarqueNexperia
0,22 €
Each (In a Pack of 50)
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 197-7516
Référence fabricantSN74LS47N
0,509 €
Each (In a Tube of 25)
Unité
- - - - - PDIP 16 - - - - - - -
N° de stock RS 146-0367
Référence fabricant74HC138PW,112
MarqueNexperia
0,322 €
Each (In a Tube of 96)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 663-0351
Référence fabricantCD74HC4511M
0,71 €
Each (In a Pack of 5)
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 145-0691
Référence fabricantCD4532BM
0,369 €
Each (In a Tube of 40)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 18 V +125 °C - 3 V -55 °C -
N° de stock RS 671-1548
Référence fabricant74ACT139SCX
0,434 €
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 166-1282
Référence fabricant74HC137D,652
MarqueNexperia
0,418 €
Each (In a Tube of 50)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 483-6392
Référence fabricant74HC137D,652
MarqueNexperia
0,418 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 174-3628
Référence fabricantAEDR-8502-102
MarqueBroadcom
9,209 €
Each (On a Reel of 100)
Unité
- - - - Surface Mount SMD 8 3.95 x 3.4 x 0.95mm 5.5 V +85 °C - 4.5 V -20 °C -
N° de stock RS 145-4496
Référence fabricant74ACT138SC
0,435 €
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 184-4278
Référence fabricantMC74HC238ADG
0,231 €
Each (In a Tube of 48)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C AEC-Q100 2 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 178-3140
Référence fabricantHCTL-2017-PLC
MarqueBroadcom
14,379 €
Each (In a Tube of 46)
Unité
- - - - Surface Mount PLCC 20 0.355 x 0.355 x 0.156in 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 709-2472
Référence fabricantSN74LS156N
0,762 €
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 709-2160
Référence fabricantSN74LS247N
1,632 €
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 -