| ??? 01/29/06 17:15 Modified: 01/29/06 17:36 Read: times |
#108645 - HC and HCT Responding to: ???'s previous message |
Prahlad said:
Atmel Adapter uses 74HC244 that doesnt work with all PC parallel ports some newer pc ports use 3V signals and this is where HC244 fails. To avoid problems HCT should be used. Dear Prahlad, my IC on board is MM74HC244N. I just now saw datasheets of both the above and MM74HCT244N, and found the major differences: 
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And rest of the ratings are almost similar(if I havent overlooked). Could you please tell me why I should use HCT instead of HC? Regards, Vignesh [edit] Oops! I have found some explanations and discussions over the same here |
| Topic | Author | Date |
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| I still persist on Asim Khan's prog. ! | 01/01/70 00:00 | |
| whats BAD in Atmels Adapter | 01/01/70 00:00 | |
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| Abhishek or me? | 01/01/70 00:00 | |
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