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 am currently building a burglar alarm with 2 PIR sensors from sparkfun. I promise to post start a build log for my alarm as soon as I know I can do it He recommends Holtek B.

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I have these working so on to my next problem. The relationship between the digital codes and the tone output frequency is illustrated in Table 2.

As for the control timing diagram, see Figure 2. Thanks for any insight. It has a serial and a paralell interface. Both modes produce the same basic tone pairs for digital dialing, corresponding to the keys: Thus, these data input pins should not float.

HT9200B Datasheet PDF

X Y 1 To get it to work, you’ll have to get the arduino to mimic the electrical behavior caused by the capacitance change that happens when you press one of those buttons. Thanks in advance for any help. Read times previous topic – next topic. Functional operation of this device dataasheet other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.


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. I have searched the internet far and wide for the past few days and I have come h9200b blank. When the IC is operating in the serial mode, this pin becomes floating. I’m probably doing everything wrong as I am more of a programmer than electronic eng.

Dimensions in mm Min. 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. When the IC is operating in the parallel mode, these pins become floating.

These are stress ratings only. Additional supplementary information with regard to packaging is listed below. Below is a datasheet for my IC and I have spent many hours trying to get this to work For the most up-to-date information, please visit our web site at http: 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.

Here is some code I wrote for that chip.

HT9200B Datasheet PDF

I know I’ve seen threads from other people trying to dattasheet Arduino to DTMF, maybe there’s a solution out there that you could adapt. I’d really appreciate your help on this. Still no tutorials however. Click on the relevant section to be transferred to the relevant website page.


Would I just connect the data pin of the IC to the pin 1 of my arduino to send the serial data to it? Hi Guys, I just received my Arduino in the post a few days ago and have been having great fun with it.

Ah, I took another look at the datasheet and you’re right. Every digit of a phone number to be transmitted is selected by a series of inputs which consist of 5-bit data. BroHogan God Member Posts: As for the control timing diagram, refer to Figure 1.

I think the serial interface would suit perfectly with the arduino but I may be wrong. Actually, I think it may be a little complex to use serial mode after viewing this document.

The information appearing in this Data Sheet is believed to be accurate at the time of publication. The oscillator function can be implemented by Connect a standard 3. Then the input data codes should be determined. However, Holtek assumes no responsibility arising from datasyeet use of the specifications described.

X Y Pad No.

HTA/HTB – Product Details – Holtek

Holtek reserves the right to alter its products without prior notification. The relationship between the digital codes and the tone output frequency is shown in Table 1.

I think what you want is an IC that takes something the arduino can talk to easily, like serial, i2c, etc.

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