+FarmerPotato Posted October 8, 2020 Share Posted October 8, 2020 I'm looking for a source of clock chip MM58274. It was used in the Geneve 9640. It has 4-bit registers, mapped with 4 address bits. Here is the thread I found with some history: I looked for MM58274 on aliexpress, and it goes for $7. I looked at several sellers that use the same photo and price. $7 I found this for $1 that is possibly fake. It doesn't have the Microchip logo, but has a sane date code. It could be a remark (laser on new markings because old ones are faded), a fake remark (dummy chip, usually with impossible date code), or else Microchip used another fab in '95. $1 for real? Mine in the Geneve 9640 has the logo and '87 date code. Any opinions on whether that is real or fake? I can try one sample for $6 shipped, might be worth a try. eBay is a mixed bag but there are a lot of photos there. One from '99 has the Microchip logo. Or another source? Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.