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Hi all,
I am having a spot of bother with prescaler chips. Basically I need to find one at the right price and availability. US$5 each is reasonable, but where from? Is there one available that is not obsolete? I live in Sweden and my local component shop is ELFA (Swedens answer to RS). They don't sell ANY digital divider that operates above 50MHz, except for the 74F163 and I cannot come up with a reliable interface circuit to couple an oscillator into it at over 100MHz. I found the MB501 (MC12022, SP8704) but it is obsolete and cannot find a reliable source. I bought a couple, but that source dried up. All I need is a divider chip that will accept a small signal up to 150MHz, is available, cheap(ish) and will divide down to under 10MHz so that I can use CMOS to process a synthesiser. A parallel-load synthesiser chip with in-built 150MHz prescaler would do. I have used "Teleport" to download over 50,000 pdf datasheets without any luck. I have gone through most of them, but it takes a fair bit of time. If anyone has a helpful suggestion I would appreciate it. BR from Harry - SM0VPO http://w1.859.telia.com/~u85920178/ harryvpo (at) hotmail (dot) com |
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