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Logic Level Conversion

The Art of Electronics (Horowitz & Hill, Cambridge University Press, ISBN 0-521-37095-7) On page 574 is a nice little table that lists what you can drive with what.

From       To-> TTL HCT/ACT HC/AC 4000B/74C@5v
TTL OK OK 1 1
HCT/ACT OK OK OK OK
HC/AC OK OK OK OK
4000B/74C@5v OK* OK OK OK

1 pullup to +5V, or use HCT as interface.

TTL - RS232 conversion

NEW! RLC-2 RS232 Level Converter in a DB9 backshell

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file: /Techref/logic/levelconversion.htm, 1KB, , updated: 2008/8/29 09:50, local time: 2018/9/26 00:23,
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