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 806-3298
Référence fabricantMC14532BDG
0,55 €
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 171-3478
Référence fabricant74VHC238FT
MarqueToshiba
0,072 €
Each (In a Pack of 50)
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 200-5284
Référence fabricantAS5030-ATST
Marqueams
3,273 €
Each (On a Reel of 500)
Unité
- - - - - TSSOP 16 - - - - - - -
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 162-7469
Référence fabricantSN74LVC1G19DCKR
0,08 €
Each (On a Reel of 3000)
Unité
- - - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 5.5 V +85 °C - 1.65 V -40 °C -
N° de stock RS 178-4134
Référence fabricantHCS301-I/SN
MarqueMicrochip
0,982 €
Each (In a Tube of 100)
Unité
- - - - Surface Mount SOIC 8 4.9 x 3.9 x 1.5mm 13 V +85 °C - 3.5 V -40 °C -
N° de stock RS 536-0953
Référence fabricantLM567CM/NOPB
1,619 €
Each (In a Pack of 10)
Unité
0.5MHz Bipolar 12mA - 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 663-0036
Référence fabricantCD74HC138E
0,452 €
Each (In a Pack of 10)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +125 °C - 2 V -55 °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 663-0480
Référence fabricantCD74HCT139M
0,56 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +125 °C - 4.5 V -55 °C -
N° de stock RS 809-6116
Référence fabricant74AC11138PW
1,133 €
Each (In a Pack of 3)
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 170-4837
Référence fabricant74LVC138APW,118
MarqueNexperia
0,088 €
Each (On a Reel of 2500)
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 709-2712
Référence fabricantCD4555BE
0,369 €
Each (In a Pack of 10)
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C -
N° de stock RS 379-2011
Référence fabricantHCS512-I/P
MarqueMicrochip
4,174 €
Each (In a Pack of 5)
Unité
- - - - Through Hole PDIP 18 22.86 x 6.35 x 3.3mm - +85 °C - - -40 °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 145-1239
Référence fabricantSN74AHCT138PW
0,328 €
Each (In a Tube of 90)
Unité
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 5.5 V +85 °C - 4.5 V -40 °C -
N° de stock RS 709-1983
Référence fabricantSN74HCT138N
0,406 €
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 170-4874
Référence fabricant74HC154PW,118
MarqueNexperia
0,377 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 6 V +125 °C - 2 V -40 °C -
N° de stock RS 638-037
Référence fabricantSN74ALS138AN
0,81 €
Each
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 443-031
Référence fabricantSN74HC138N
0,37 €
Each
Unité
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +85 °C - 2 V -40 °C -