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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Omschrijving Prijs 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-stocknr. 885-0768
FabrikantnummerHT9170D-18SOP
FabrikantHoltek
1,168 €
Each (In a Tube of 42)
Aantal stuks
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 -
RS-stocknr. 100-0709
FabrikantnummerLM567CN/NOPB
1,738 €
Each (In a Tube of 40)
Aantal stuks
0.5MHz Bipolar - - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 9 V +70 °C - 4.75 V 0 °C -
RS-stocknr. 460-819
FabrikantnummerLM567CN/NOPB
2,046 €
Each (In a Pack of 5)
Aantal stuks
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 -
RS-stocknr. 806-1413
FabrikantnummerMC74HC138ADR2G
Fabrikantonsemi
0,32 €
Each (On a Tape of 50)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS-stocknr. 368-6039
FabrikantnummerSN74LS138N
0,669 €
Each (In a Tube of 25)
Aantal stuks
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
RS-stocknr. 663-0509
FabrikantnummerCD74HCT154M
0,784 €
Each (In a Pack of 5)
Aantal stuks
- - - - Surface Mount SOIC 24 15.4 x 7.52 x 2.35mm 5.5 V +125 °C - 4.5 V -55 °C -
RS-stocknr. 170-3561
FabrikantnummerMC74HC138ADR2G
Fabrikantonsemi
0,111 €
Each (On a Reel of 2500)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS-stocknr. 689-8709
FabrikantnummerMC74HC138ADG
Fabrikantonsemi
0,418 €
Each (In a Pack of 5)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS-stocknr. 122-0107
FabrikantnummerMC74HC138ADG
Fabrikantonsemi
0,32 €
Each (In a Tube of 48)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C -
RS-stocknr. 791-8719
Fabrikantnummer74HC157D,652
FabrikantNexperia
0,426 €
Each (In a Pack of 25)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm - +125 °C - - -40 °C -
RS-stocknr. 165-9889
Fabrikantnummer74HC157D,652
FabrikantNexperia
0,36 €
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm - +125 °C - - -40 °C -
RS-stocknr. 178-6970
FabrikantnummerHEF4543BT,652
FabrikantNexperia
0,162 €
Each (In a Tube of 50)
Aantal stuks
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C -
RS-stocknr. 162-6504
FabrikantnummerCD4511BPW
0,351 €
Each (In a Tube of 90)
Aantal stuks
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 18 V +125 °C - 3 V -55 °C -
RS-stocknr. 809-6220
FabrikantnummerCD4511BPW
0,131 €
Each (In a Pack of 15)
Aantal stuks
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 1.05mm 18 V +125 °C - 3 V -55 °C -
RS-stocknr. 526-921
FabrikantnummerSN74HC139D
0,346 €
Each (In a Tube of 40)
Aantal stuks
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 6 V +85 °C - 2 V -40 °C -
RS-stocknr. 307-575
FabrikantnummerSN74LS42N
2,22 €
Each
Aantal stuks
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C -
RS-stocknr. 145-0465
FabrikantnummerCD4028BE
0,471 €
Each (In a Tube of 25)
Aantal stuks
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C -
RS-stocknr. 709-2034
FabrikantnummerCD74HC238E
0,574 €
Each (In a Pack of 10)
Aantal stuks
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +125 °C - 2 V -55 °C -
RS-stocknr. 781-2831
Fabrikantnummer74HC4514D,652
FabrikantNexperia
1,131 €
Each (In a Pack of 10)
Aantal stuks
- - - - Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C -
RS-stocknr. 662-8102
FabrikantnummerSN74HC139DR
0,066 €
Each (In a Pack of 10)
Aantal stuks
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 6 V +85 °C - 2 V -40 °C -