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Author Topic: How to amplify TTL logical levels?  (Read 6923 times)

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Offline caiusTopic starter

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Re: How to amplify TTL logical levels?
« Reply #25 on: September 27, 2017, 07:44:12 am »
It seems the unknown IC  is a 74HC365 since other boards use a different revision of the custom (marked as 'UEC-51') which has no unknown chip but a 74LS365 on game PCB in the nearby.
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Offline caiusTopic starter

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    • Caius Arcade Repairs & Engineering
Re: How to amplify TTL logical levels?
« Reply #26 on: September 27, 2017, 10:04:33 am »
We were both close but wrong, it's a 74HC368!
The one I tried to identify for first first was bad in a output of a gate (pin 7), indeed I got not BLUE color on screen.So I removed another one from a good custom and I was able to identify it as a 74HC368.Now I have to review my schematics in order to implement it.Thanks to all (especially to 'stj')
« Last Edit: September 27, 2017, 10:13:00 am by caius »
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