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SE/30 Video Section Replacement Parts
Posted by: superjer2000 on 2019-12-15 20:04:23 Does anyone have a list of known good Mouser or Digikey part numbers for the following SE/30 ICs: UE8 LS166 UF8 and UG8 LS393 UA8, UB8 and UC8 74F253 Thanks!
Posted by: techknight on 2019-12-17 10:11:57 As long as you match the LS for LS,. and F for F, you should be fine.
Posted by: superjer2000 on 2020-01-02 10:39:57 Does anyone have a list of known good Mouser or Digikey part numbers for the following SE/30 ICs: UE8 LS166 UF8 and UG8 LS393 UA8, UB8 and UC8 74F253 Thanks! I can confirm the following: UE8 LS166: Mouser Part # 595-SN74LS166AD UA8, UB8 and UC8 74F253: Mouser Part # 595-SN74F253DR I haven't yet needed to replace a UF8 or UG8 but I ordered and am pretty confident that 595-SN74LS393D will work.
Posted by: Bolle on 2020-01-02 12:35:31 I had to replace UG8 once. Replaced it with a LS393 from mouser - worked just like new afterwards. Probably was the same you found as well.
Posted by: smrieck511 on 2024-04-20 13:58:11 Glad I found this...what about UC8 or UD8? Looks like I might be replacing UD8. Thanks for any help.
Posted by: ThisDoesNotCompute on 2024-04-20 14:25:52 All of the U*8 chips are the same, SN74F253DRG4: https://www.mouser.com/ProductDetail/Texas-Instruments/SN74F253DRG4?qs=mE33ZKBHyE48NOrAiOcGCw==
Posted by: smrieck511 on 2024-04-20 14:36:34 All of the U*8 chips are the same, SN74F253DRG4: https://www.mouser.com/ProductDetail/Texas-Instruments/SN74F253DRG4?qs=mE33ZKBHyE48NOrAiOcGCw== Thanks!
Posted by: smrieck511 on 2024-04-20 15:42:00 Does anyone know about replacement PAL and Video ROM chips?
Posted by: daanvdl on 2024-04-21 02:11:06 Does anyone know about replacement PAL and Video ROM chips? You can use the Bolle PAL jedec files to program 16V8’s. The VIDEO ROM is a 27C.
Posted by: smrieck511 on 2024-04-21 05:39:51 You can use the Bolle PAL jedec files to program 16V8’s. The VIDEO ROM is a 27C. thanks. Where would I find these files? Is there one for the video ROM as well?
Posted by: daanvdl on 2024-04-21 10:13:47 SE30/PALs at main · TheRealBolle/SE30 Macintosh SE/30 logicboard recreation. Contribute to TheRealBolle/SE30 development by creating an account on GitHub. github.com For the VROM: maybe you can find a binary online, either create one yourself when you need a clone.
Posted by: smrieck511 on 2024-04-21 11:06:31 SE30/PALs at main · TheRealBolle/SE30 Macintosh SE/30 logicboard recreation. Contribute to TheRealBolle/SE30 development by creating an account on GitHub. github.com For the VROM: maybe you can find a binary online, either create one yourself when you need a clone. Thanks!
Posted by: smrieck511 on 2024-04-21 13:08:45 All of the U*8 chips are the same, SN74F253DRG4: https://www.mouser.com/ProductDetail/Texas-Instruments/SN74F253DRG4?qs=mE33ZKBHyE48NOrAiOcGCw== I didnt realize it but UF8 and UG8 are 14 pin chips but the rest are 16 pin chips. Are we certain that A-E are the same?
Posted by: ThisDoesNotCompute on 2024-04-21 14:36:58 I didnt realize it but UF8 and UG8 are 14 pin chips but the rest are 16 pin chips. Are we certain that A-E are the same? Sorry, I should have said UA8 through UD8 are the same. Here's a BOM of all the parts on the SE/30. What you're looking for is on the "Top-Side PnP BOM" tab. Any chips that aren't available as commodity parts are on the "Top-Side Special Parts" tab. https://docs.google.com/spreadsheets/d/1Nx-KRaF5cdhcJSdrX42SqrtQcKcN2UZhHbEiThW19gc/edit?usp=sharing
Posted by: smrieck511 on 2024-04-21 14:57:25 Sorry, I should have said UA8 through UD8 are the same. Here's a BOM of all the parts on the SE/30. What you're looking for is on the "Top-Side PnP BOM" tab. Any chips that aren't available as commodity parts are on the "Top-Side Special Parts" tab. https://docs.google.com/spreadsheets/d/1Nx-KRaF5cdhcJSdrX42SqrtQcKcN2UZhHbEiThW19gc/edit?usp=sharing got it. Thanks again for your help. I enjoy your channel also!
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