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It read clearly on the ic. But I do not have a camera that is good enough to take a picture. So I made the picture as above.
Whoooo ... maybe you are right, this is a custom product. Very reasonable.
Case closed :thumbsup: Unless someone else can provide different information.
Thank you sir...
I agree with you, but I did not find any information (datasheet) about the IC on Texas Instrument website (www.ti.com). Because the amount of stock is very much, it's a pity if not used 8-)
Hello Sir, Thanks for your reply.
I do not have the original product with enough clarity. So I made a picture like that. All text, logo, I write like the original picture.
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Helo Sir,
Thanks for your Reply. I do not have the original product with enough clarity. So I made...
I found some stock components in my office warehouse. Unfortunately no one knows the type and function. Looking at the logo, it appears that he was produced by Texas Instrument. However I was browsing on the TI web, not finding any meaningful hints. I tried googling, also still find the answer...
tpetar:
yes. especially detect On Hook Detector. when user on hook (call end) then circuit generate dtmf "D" tone. i am monitoring dtmf ("D") via soundcard (mic) then triger my app for bill calculation. do you have an idea tpetar?
i'm a student, want to create circuit for monitoring phone "ON HOOK" activity, when user on hook (call end) then circuit generate dtmf "D" tone at my audio amplifier.
any there some simple circuit (without) microcontroler? please...please... ;-)
thank's
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