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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Is it possible to substitute an LM1281N video IC, with a 1282? According to
the specs, they're exactly the same except the 1282 is 110Mhz, instead of 85MHz. Does that mean it has to run at that specific frequency? -- To reply via Email, remove NOSPAM from the address |
#2
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![]() "Chris F." wrote in message ... Is it possible to substitute an LM1281N video IC, with a 1282? According to the specs, they're exactly the same except the 1282 is 110Mhz, instead of 85MHz. Does that mean it has to run at that specific frequency? -- To reply via Email, remove NOSPAM from the address As far as I can see looking at the data sheets, you should be OK subbing a 1282 for a 1281. Looks like the 1282 is just a slightly better version. The 110MHz is just what the amps in the device, are good up to. Any video applied will have component frequencies going all the way down to DC, anyway. All that frequency spec means is that it can resolve finer video detail than the 1281. Go for it ! Arfa |
#3
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That's what I figured, thought I'd get some info before I went ahead and
gambled my time on it. Thanks. "Arfa Daily" wrote in message ... "Chris F." wrote in message ... Is it possible to substitute an LM1281N video IC, with a 1282? According to the specs, they're exactly the same except the 1282 is 110Mhz, instead of 85MHz. Does that mean it has to run at that specific frequency? -- To reply via Email, remove NOSPAM from the address As far as I can see looking at the data sheets, you should be OK subbing a 1282 for a 1281. Looks like the 1282 is just a slightly better version. The 110MHz is just what the amps in the device, are good up to. Any video applied will have component frequencies going all the way down to DC, anyway. All that frequency spec means is that it can resolve finer video detail than the 1281. Go for it ! Arfa |
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