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 885-0768
Référence fabricantHT9170D-18SOP
MarqueHoltek
1,108 €
Each (In a Tube of 42)
Unité
3.57 to 3.58MHz CMOS - 60dB Surface Mount SOP 18 11.76 x 7.62 x 2.34mm 5.5 V +75 °C - 2.5 V -20 °C -
N° de stock RS 460-819
Référence fabricantLM567CN/NOPB
1,914 €
Each (In a Pack of 5)
Unité
0.5MHz Bipolar 12mA - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 9 V +70 °C - 4.75 V 0 °C -
N° de stock RS 100-0709
Référence fabricantLM567CN/NOPB
1,63 €
Each (In a Tube of 40)
Unité
0.5MHz Bipolar - - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 9 V +70 °C - 4.75 V 0 °C -
N° de stock RS 806-1413
Référence fabricantMC74HC138ADR2G
0,271 €
Each (On a Tape 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 689-8709
Référence fabricantMC74HC138ADG
0,314 €
Each (In a Pack of 5)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
N° de stock RS 165-9889
Référence fabricant74HC157D,652
MarqueNexperia
0,324 €
Each (In a Tube of 50)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm - +125 °C - - -40 °C -
N° de stock RS 170-3561
Référence fabricantMC74HC138ADR2G
0,083 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
N° de stock RS 368-6039
Référence fabricantSN74LS138N
0,648 €
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 122-0107
Référence fabricantMC74HC138ADG
0,23 €
Each (In a Tube 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 791-8719
Référence fabricant74HC157D,652
MarqueNexperia
0,324 €
Each (In a Pack of 25)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm - +125 °C - - -40 °C -
N° de stock RS 663-0509
Référence fabricantCD74HCT154M
0,786 €
Each (In a Pack of 5)
Unité
- - - - Surface Mount SOIC 24 15.4 x 7.52 x 2.35mm 5.5 V +125 °C - 4.5 V -55 °C -
N° de stock RS 662-8102
Référence fabricantSN74HC139DR
0,066 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 6 V +85 °C - 2 V -40 °C -
N° de stock RS 169-7218
Référence fabricant74AHC138S16-13
MarqueDiodesZetex
0,053 €
Each (On a Reel of 2500)
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 5.5 V +125 °C - 2 V -40 °C -
N° de stock RS 307-575
Référence fabricantSN74LS42N
1,93 €
Each
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 145-0668
Référence fabricantSN74LS42N
1,638 €
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 145-0465
Référence fabricantCD4028BE
0,385 €
Each (In a Tube of 25)
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 816-4644
Référence fabricant74HCT153PW,112
MarqueNexperia
0,475 €
Each (In a Pack of 32)
Unité
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 5.5 V +125 °C - 4.5 V -40 °C -
N° de stock RS 304-065
Référence fabricantSN7445N
2,50 €
Each
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 355-9460
Référence fabricantHEF4543BT,652
MarqueNexperia
0,13 €
Each
Unité
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C -
N° de stock RS 662-8617
Référence fabricantSN74LVC138ADR
0,236 €
Each (In a Pack of 10)
Unité
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 3.6 V +85 °C - 1.65 V -40 °C -