Need Data for DTMF IC AY5-9100

[60hzEE]

Anyone have pinout, or better yet, a spec sheet?

I've tried General Instrument, now Motorola Broadband and no results.

Hope to use in a DTMF controller.


Lee
60HzEE

[radiobug]

I suppose you already know that's an encoder, not a decoder.

[60hzEE]

Nope. I didn't. So much for that project. I'd still like to get the pinout, though.

The guy who sold a couple to me didn't know which they were.

Thanks.

[radiobug]

Sorry -- Don't have a pinout. You could use a 8870 or SSI202 or something like that, plenty of those around.

[KA1AXY]

Having built more than a few DTMF decoders, I would heartily recommend the 8870 part. It's multi-sourced & works well. The AY-5 number is a VERY old General Instruments number, and I would advise against using it.

I found one in my junk box if you want it, email me with your address
& I'll mail it to you.

You'll need a 3.579545 MHz color burst crystal to make it go, and a couple
of resistors. You should be able to find the datasheet online.

Teltone has them in production if you're building more than one.