HTB Datasheet, HTB Holtek DTMF Generators Datasheet, buy HTB DTMF IC. serial mode whereas the HTB contains a selectable serial/parallel mode interface for various applications such as security systems. HTA/HTB DTMF Generator With Serial Interface Features. Operating voltage: V~V Serial mode for the HTA Serial/parallel mode for the.

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I’m probably doing everything wrong as I am more of a programmer than electronic eng. The relationship between the digital codes and the tone output frequency is illustrated in Table 2.

X Y Pad No. Thanks in advance for any help. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Below is a datasheet for my IC and I have spent many hours trying to get this to work I promise to post start a build log for my alarm as soon as I know I can do it As this information may be updated at regular intervals users are reminded to consult the Holtek website for the latest version of the package information.


HT9200B Datasheet PDF

Actually, I think it may be a little complex to use serial mode after viewing this document. When the IC is operating in the serial mode, this pin becomes floating. Then the input data codes should be determined.

Both ht92000b produce the same basic tone pairs for digital dialing, corresponding to the keys: Dimensions in mm Min. BroHogan God Member Posts: I am currently building a burglar alarm with 2 PIR sensors from sparkfun.

However, Holtek assumes no responsibility arising from the use of the satasheet described. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

HT9200A/HT9200B — DTMF Generators

Thus, these data input pins should not float. The relationship between the digital codes and the tone output frequency is shown in Table 1.

Every digit of a phone number to be transmitted is selected by a series of inputs which consist of 5-bit data. I don’t think this is the ideal IC for your purpose, because it’s set up to receive inputs from a key numeric pad. For the most up-to-date information, please visit our web site at http: I think the serial interface would suit perfectly with the arduino but I may be wrong. Thanks for any insight. Ah, I took another look at the datasheet and you’re right. X Y 1 Read times previous topic – next topic.


Would I just connect the data pin of the IC to dqtasheet pin 1 of my arduino to send the serial data to it?

I have searched the internet far and wide for the past few days and I have come up blank. I have these working so on to my next ht9200h.


He recommends Holtek B. I know I’ve seen threads from other people trying to interface Arduino to DTMF, maybe there’s a solution out there that hg9200b could adapt. When the IC hh9200b operating in the parallel mode, these pins become floating.

I’d really appreciate your help on this. I think what you want is an IC that takes something the arduino can talk to easily, like serial, i2c, etc. It has a serial and a paralell interface.