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庫存編號 304-942
製造零件編號SN74LS259BN
HK$10.96
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 145-0381
製造零件編號SN74LS259BN
HK$9.796
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 368-4724
製造零件編號SN7447AN
HK$25.431
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 305-406
製造零件編號SN7447AN
HK$30.24
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 145-6398
製造零件編號CD74HCT138M96
HK$2.45
個 (在毎卷:2500)
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V 125 °C - 4.5 V -55 °C
RS庫存編號 662-7244
製造零件編號CD74HCT138M96
HK$5.198
/個 (每包:10個)
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +125 °C - 4.5 V -55 °C
RS庫存編號 833-709
製造零件編號CD74HCT138M
HK$7.10
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +125 °C - 4.5 V -55 °C
RS庫存編號 922-2903
製造零件編號CD4511BE
HK$5.008
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C
RS庫存編號 662-9698
製造零件編號CD4511BE
HK$5.838
/個 (每包:5個)
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C
RS庫存編號 709-1983
製造零件編號SN74HCT138N
HK$4.744
/個 (每包:10個)
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +85 °C - 4.5 V -40 °C
RS庫存編號 144-9994
製造零件編號SN74HCT138N
HK$4.714
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.5 V +85 °C - 4.5 V -40 °C
RS庫存編號 443-031
製造零件編號SN74HC138N
HK$5.68
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +85 °C - 2 V -40 °C
RS庫存編號 145-0477
製造零件編號CD74HC147EE4
HK$3.164
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 308-253
製造零件編號SN74LS139AN
HK$15.39
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 662-9531
製造零件編號CD40147BE
HK$5.838
/個 (每包:5個)
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C
RS庫存編號 709-2700
製造零件編號CD74HC147EE4
HK$6.774
/個 (每包:10個)
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 662-8430
製造零件編號SN74LV138APWR
HK$3.14
/個 (每包:10個)
單位
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 5.5 V +85 °C - 2 V -40 °C
RS庫存編號 162-7426
製造零件編號SN74LV138APWR
HK$1.033
個 (在毎卷:2000)
單位
- - - - Surface Mount TSSOP 16 5 x 4.4 x 1.15mm 5.5 V +85 °C - 2 V -40 °C
RS庫存編號 144-9897
製造零件編號SN74LS139AN
HK$7.046
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 145-0416
製造零件編號CD40147BE
HK$4.295
毎管:25 個
單位
- - - - Through Hole PDIP 16 19.3 x 6.35 x 4.57mm 18 V +125 °C - 3 V -55 °C