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 Price 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
RS Stock No. 170-8040
Mfr. Part No.74HC154D,653
BrandNexperia
HK$3.032
Each (On a Reel of 1000)
units
- - - - Surface Mount SO 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 178-6959
Mfr. Part No.74HC154D,652
BrandNexperia
HK$5.817
Each (In a Tube of 30)
units
- - - - Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 483-6421
Mfr. Part No.74HC154D,652
BrandNexperia
HK$7.218
Each (In a Pack of 5)
units
- - - - Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 170-4831
Mfr. Part No.HEF4051BT,653
BrandNexperia
HK$1.279
Each (On a Reel of 2500)
units
- - - - Surface Mount SO 16 10 x 4 x 1.45mm 15 V +125 °C - 3 V -40 °C
RS Stock No. 165-9889
Mfr. Part No.74HC157D,652
BrandNexperia
HK$3.024
Each (In a Tube of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm - +125 °C - - -40 °C
RS Stock No. 170-4872
Mfr. Part No.74HC238PW,118
BrandNexperia
HK$1.754
Each (On a Reel of 2500)
units
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 178-6970
Mfr. Part No.HEF4543BT,652
BrandNexperia
HK$3.948
Each (In a Tube of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C
RS Stock No. 146-0367
Mfr. Part No.74HC138PW,112
BrandNexperia
HK$3.413
Each (In a Tube of 96)
units
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 170-4887
Mfr. Part No.74HC4067DB,118
BrandNexperia
HK$3.826
Each (On a Reel of 1000)
units
- - - - Surface Mount SSOP 24 8.4 x 5.4 x 1.8mm 10 V +125 °C - 2 V -40 °C
RS Stock No. 136-4813
Mfr. Part No.74HC138D,653
BrandNexperia
HK$0.952
Each (On a Reel of 2500)
units
- - - - Surface Mount SO 16 10 x 4 x 1.45mm 5.5 V +125 °C - 4.5 V -40 °C
RS Stock No. 165-8613
Mfr. Part No.74LVC1G157GV,125
BrandNexperia
HK$0.596
Each (On a Reel of 3000)
units
- - - - Surface Mount SC-74 6 3.1 x 1.7 x 1mm 5.5 V +125 °C - 1.65 V -40 °C
RS Stock No. 170-8065
Mfr. Part No.HEF4051BT,652
BrandNexperia
HK$2.946
Each (In a Tube of 50)
units
- - - - Surface Mount SO 16 10 x 4 x 1.45mm 15 V +125 °C - 3 V -40 °C
RS Stock No. 816-8769
Mfr. Part No.74LVC1G157GW,125
BrandNexperia
HK$2.331
Each (In a Pack of 50)
units
- - - - Surface Mount SC-88 6 2.2 x 1.35 x 1mm 5.5 V +125 °C - 1.65 V -40 °C
RS Stock No. 170-4837
Mfr. Part No.74LVC138APW,118
BrandNexperia
HK$0.89
Each (On a Reel of 2500)
units
- - - - Surface Mount TSSOP 16 5.1 x 4.5 x 0.95mm 3.6 V +125 °C - 1.2 V -40 °C
RS Stock No. 170-5337
Mfr. Part No.HEF4051BT,653
BrandNexperia
HK$3.276
Each (In a Pack of 25)
units
- - - - Surface Mount SO 16 10 x 4 x 1.45mm 15 V +125 °C - 3 V -40 °C
RS Stock No. 146-0387
Mfr. Part No.74HC139D,652
BrandNexperia
HK$3.237
Each (In a Tube of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 178-6977
Mfr. Part No.74HCT238D,652
BrandNexperia
HK$4.799
Each (In a Tube of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 5.5 V +125 °C - 4.5 V -40 °C
RS Stock No. 436-7537
Mfr. Part No.74HC237D,652
BrandNexperia
HK$4.452
Each (In a Tube of 50)
units
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 170-5365
Mfr. Part No.74HC154PW,118
BrandNexperia
HK$8.442
Each (In a Pack of 10)
units
- - - - Surface Mount TSSOP 24 7.9 x 4.5 x 0.95mm 6 V +125 °C - 2 V -40 °C
RS Stock No. 151-3387
Mfr. Part No.74HC4852D,118
BrandNexperia
HK$2.511
Each (On a Reel of 2500)
units
- - - - Surface Mount SO 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -40 °C