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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The relationship between the digital codes and the tone output frequency is shown in Table 1.

Thanks for any insight. The relationship between the digital codes and the tone output frequency is illustrated in Table 2.

Every digit of a phone number to be transmitted is selected by a series of inputs which consist of 5-bit data. 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.

HTA/HTB – Product Details – Holtek

Additional supplementary information with regard to packaging is listed below. As for the control timing diagram, refer to Figure 1. Thanks in advance for any help. I have these working so on datzsheet my next problem.

Holtek reserves the right to alter its products without prior notification. The information appearing in this Data Sheet is believed to be accurate at the time of publication. I think the serial interface would suit perfectly with the arduino but I may be wrong. I know I’ve seen threads from other people trying to interface Arduino to DTMF, maybe there’s a solution out there that you could adapt. I think what you want is an IC that takes something the arduino can talk to easily, like catasheet, i2c, etc.


However, Holtek assumes no responsibility arising from the use of the specifications described. I have searched the internet far and wide for the past few days and I have come up blank. X Y Pad No. When the IC is operating in the parallel mode, these pins become floating.

As for the dxtasheet timing diagram, see Figure 2. For the most up-to-date information, please visit our web site at http: Click on the relevant section to be transferred to the relevant website page.

HT9200B Datasheet PDF

These are stress ratings only. 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. Still no tutorials however. The oscillator function can be implemented by Connect a standard 3. I promise to post start a build log for my alarm as soon as I know I can do it Dimensions in mm Min. Actually, I think it may be a little complex to use serial mode after viewing this document.

HT9200B Datasheet PDF

Both modes produce the same basic tone pairs for digital dialing, corresponding to the keys: It has a serial and a paralell interface. Below is a datasheet for my IC and I have spent many hours trying to get this to work BroHogan God Member Posts: The applications mentioned herein are used solely datasheet 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.


X Y 1 Then the input data codes should be determined. Thus, these data input pins should not float. I’d really appreciate your help on this. When the IC is operating in the serial mode, this pin becomes floating.

He recommends Holtek B. I am currently building a burglar alarm with 2 PIR sensors from sparkfun. Ah, I took another look at the datasheet and you’re right. Here is some code I wrote for that chip. dattasheet

HTB Datasheet(PDF) – Holtek Semiconductor Inc

Read times datawheet topic – next topic. I’m probably doing everything wrong as I am more of a programmer than electronic eng. Hi Guys, I just received my Arduino in the post a few days ago and have been having great fun with it.

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