What;s a good alternative for the IC 74c925?

A PIC, of course.

Is this for a replacement or new design ??

These things are still available, just might cost you more that a replacment unit.

In a new design, what else does the systems need beside a 4 digit counter (0 to 9999) ??

donald

On a sunny day (15 Feb 2007 19:05:38 -0800) it happened snipped-for-privacy@gmail.com wrote in :

PIC.

AVR....

Here's one you'll thank me for and I think it's still current. (and I think it is).

Surely you'll find some somewhere.

ICM7217 (intersil or maxim) made in a 5959 and a 9999 ann both CC and CA.

Or learn picbasic and do it with a PIC in a weekend.

The problem with PICs is that I don't have the programmer and the IC I need is for a specific circuit.

Thank you gentlemen. I'll try the ICM7217 :)

Or just get some counters and latches (if you need them) and decoders and wire them up. That's the way it used to be, and of course if you needed fewer digits you'd just leave one off. If you needed more, you'd add more.

You can even do it easier than in the old days, because unlike thirty years ago, you can get two decade counters in a single package (the 74390, unless its time has peaked), and 8 bits of latch in a single package. IN the old days, the best you could get (at least easily in the common logic families) was a decade counter per package and a 4-bit latch.

And then you can decide whether the added circuitry to allow multiplexing is worth saving some decoders. Those 8-bit latches would include tri-state outputs nowadays, making the multiplexing easier, but you have to decide at what number of digits it's time to do away with the extra decoders.

Michael

I take it that you are doing a repair.

Would buying just one, fix the specific circuit involved.

But two and your covered for the next time.

The cost of the ICM7217 is slightly cheaper, but to rewire an existing circuit would take time (time = money).

donald