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 816-4648
Référence fabricant74HCT154PW,112
MarqueNexperia
0,71 €
Each (In a Pack of 7)
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 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 806-2163
Référence fabricantMC74AC138DG
0,362 €
Each (In a Pack of 25)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +85 °C - 2 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 178-6977
Référence fabricant74HCT238D,652
MarqueNexperia
0,452 €
Each (In a Tube of 50)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 5.5 V +125 °C - 4.5 V -40 °C -
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 144-9897
Référence fabricantSN74LS139AN
0,588 €
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 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 145-6686
Référence fabricantSN74F138D
0,161 €
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 443-031
Référence fabricantSN74HC138N
0,38 €
Each
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +85 °C - 2 V -40 °C -
N° de stock RS 662-6835
Référence fabricantCD4028BM96
0,313 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 18 V +125 °C - 3 V -55 °C -
Nouveau
N° de stock RS 219-4250
Référence fabricant74HC138D,652
MarqueNexperia
0,281 €
Each (In a Tube of 50)
Unité
1MHz CMOS 0.08mA - - SO16 16 - - - - - - -
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 825-3192
Référence fabricant74AC11138D
2,376 €
Each (In a Pack of 5)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V +85 °C - 3 V -40 °C -
N° de stock RS 136-4813
Référence fabricant74HC138D,653
MarqueNexperia
0,082 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount SO 16 10 x 4 x 1.45mm 5.5 V +125 °C - 4.5 V -40 °C -
N° de stock RS 145-0138
Référence fabricantCD4056BM
0,351 €
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 633-969
Référence fabricantCD74HCT42E
1,02 €
Each
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +125 °C - 4.5 V -55 °C -
N° de stock RS 527-823
Référence fabricantCD74HC238M
0,395 €
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 171-3318
Référence fabricant74VHC138FT
MarqueToshiba
0,079 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1mm 5.5 V +125 °C AEC-Q100 2 V -40 °C -
N° de stock RS 662-9648
Référence fabricantCD4056BM
0,376 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 18 V +125 °C - 3 V -55 °C -