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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However, Holtek assumes no responsibility arising from the use of the specifications described. Click on the relevant section to fatasheet transferred to the relevant website page.

I am currently building a burglar alarm with 2 PIR sensors from sparkfun. Thanks in advance for any help. Datashdet relationship between the digital codes and the tone output frequency is illustrated in Table 2. I’d really appreciate your help on this. The relationship between the digital codes and the tone output frequency is shown in Table 1.

BroHogan God Member Posts: Would I just connect the data pin of the IC to the pin 1 of my arduino to send the serial data to it? Then the input data codes should be determined. Hi Guys, I just received my Arduino in the post a few days ago and have been having great fun with it. Both modes produce the same basic tone pairs for digital dialing, corresponding to the keys: X Y 1 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.


The oscillator function can be implemented by Connect a standard 3. He recommends Holtek B. Ah, I took another look at the datasheet and you’re right.

Arduino and HMA – Generate DTMF!

Here is some datasheft I wrote for that chip. It has a serial and a paralell interface. Read times previous topic – next topic. Holtek reserves the right to alter its products without prior notification.

HT9200B Datasheet PDF

These are stress ratings only. Below is a datasheet for my IC and I have spent many hours trying to get this to work As for the control timing diagram, refer to Figure 1. As for the control timing diagram, see Figure 2. 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. 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.

I’m probably doing everything wrong as I am more of a programmer than electronic eng. X Y Pad No. I have these working so on to my next problem.


When the IC is operating in the parallel mode, these pins become floating. Thus, these data input pins should not float. I have searched the internet far and wide for the past few days and I have come up blank.

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.

HTB 데이터시트(PDF) – Holtek Semiconductor Inc

I promise to post start a build log for my alarm as soon as I know I can do it Dimensions in mm Min. I don’t think this is the ideal IC for your purpose, because it’s set datasheet to receive inputs from a key numeric pad.

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. The information appearing in this Data Sheet is believed to be accurate at the time of publication.

Last modified: January 16, 2020