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 124-2261
製造零件編號74HC4514D,652
BrandNexperia
TWD49.50
毎管:30 個
單位
- - - - Surface Mount SOIC 24 15.6 x 7.6 x 2.45mm 6 V +125 °C - 2 V -40 °C
RS庫存編號 170-3561
製造零件編號MC74HC138ADR2G
Brandonsemi
TWD4.20
個 (在毎卷:2500)
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 885-0709
製造零件編號HT12E-20SOP
BrandHoltek
TWD36.60
毎管:38 個
單位
- - - - Surface Mount SOP 20 12.8 x 7.5 x 2.35mm 12 V +75 °C - 2.4 V -20 °C
RS庫存編號 806-1413
製造零件編號MC74HC138ADR2G
Brandonsemi
TWD14.00
Each (On a Tape of 50)
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 689-8709
製造零件編號MC74HC138ADG
TWD18.20
/個 (每包:5個)
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 885-0705
製造零件編號HT12D-20SOP
BrandHoltek
TWD31.60
毎管:38 個
單位
- - - - Surface Mount SOP 20 12.8 x 7.5 x 2.35mm 12 V +75 °C - 2.4 V -20 °C
RS庫存編號 122-0107
製造零件編號MC74HC138ADG
Brandonsemi
TWD15.90
毎管:48 個
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 923-2486
製造零件編號SN74HC138N
TWD17.60
毎管:25 個
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 368-6039
製造零件編號SN74LS138N
TWD28.70
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 169-5679
製造零件編號SN74HCT139DR
TWD5.30
個 (在毎卷:2500)
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +85 °C - 4.5 V -40 °C
RS庫存編號 178-6970
製造零件編號HEF4543BT,652
BrandNexperia
TWD21.10
毎管:50 個
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C
RS庫存編號 178-4003
製造零件編號HCS200/SN
BrandMicrochip
TWD46.10
毎管:100 個
單位
- - - - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 13 V +70 °C - 3.5 V 0 °C
RS庫存編號 467-0776
製造零件編號HCS200/SN
BrandMicrochip
TWD46.20
/個 (每包:5個)
單位
- - - - Surface Mount SOIC 8 4.9 x 3.9 x 1.25mm 13 V +70 °C - 3.5 V 0 °C
RS庫存編號 662-8272
製造零件編號SN74HCT139DR
TWD15.00
/個 (每包:10個)
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.5 V +85 °C - 4.5 V -40 °C
RS庫存編號 355-9460
製造零件編號HEF4543BT,652
BrandNexperia
TWD24.00
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 15 V +85 °C - 3 V -40 °C
RS庫存編號 184-4262
製造零件編號MC14543BDG
Brandonsemi
TWD19.80
毎管:48 個
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.5mm +18 V +125 °C AEC-Q100 -5 V -55 °C
RS庫存編號 663-0363
製造零件編號CD74HC4514M
TWD128.00
單位
- - - - Surface Mount SOIC 24 15.4 x 7.52 x 2.35mm 6 V +125 °C - 2 V -55 °C
RS庫存編號 483-6487
製造零件編號74HC238D,652
BrandNexperia
TWD18.80
/個 (每包:10個)
單位
- - - - Surface Mount SOIC 16 10 x 4 x 1.45mm 6 V +125 °C - 2 V -40 °C
RS庫存編號 178-9211
製造零件編號SN74LS47D
TWD66.70
毎管:40 個
單位
- - - - Surface Mount SOIC 16 9.9 x 3.91 x 1.58mm 5.25 V +70 °C - 4.75 V 0 °C
RS庫存編號 144-9942
製造零件編號CD74HC138E
TWD18.20
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