DTMF decoder Module

This compact and highly readable DTMF(Dual Tone Multi Frequency) Decoder Module stands out in the league of similar modules available in the electronics markets provide operates 5 to 9 V DC. Every single data bit is provided with an on this board led indicator for quick visual confirmation. The momentary output LED bit is also provided with a bright white flash LED.
When a valid DTMF tone is received as input the status led flashes and the corresponding 4 bit binary value is latched to the output pins D0, D1, D2 & D3 and then a status led blink. The module is capable of providing 16 different outputs if the tones are fade thru a tone generation circuit or through PC based software ( the inputs being from 0-9 * # and A B C D ).However when operated through cellular phone device it can provide only 12 diff outputs because of 0-9 keyboard along with *
Special Features:-
Decodes DTMF as 4 bit binary
TTL level output for direct connection to microcontrollers
Low power 5V DC operation & Operating Current 100 mA
LED indication of outputs
Simple to use
Based on excellent HT92B70 IC

Description

This compact and highly readable DTMF(Dual Tone Multi Frequency) Decoder Module stands out in the league of similar modules available in the electronics markets provide operates 5 to 9 V DC. Every single data bit is provided with an on this board led indicator for quick visual confirmation. The momentary output LED bit is also provided with a bright white flash LED.
When a valid DTMF tone is received as input the status led flashes and the corresponding 4 bit binary value is latched to the output pins D0, D1, D2 & D3 and then a status led blink. The module is capable of providing 16 different outputs if the tones are fade thru a tone generation circuit or through PC based software ( the inputs being from 0-9 * # and A B C D ).However when operated through cellular phone device it can provide only 12 diff outputs because of 0-9 keyboard along with *
Special Features:-
Decodes DTMF as 4 bit binary
TTL level output for direct connection to microcontrollers
Low power 5V DC operation & Operating Current 100 mA
LED indication of outputs
Simple to use
Based on excellent HT92B70 IC