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CBM-910 User’s Manual
CITIZEN 21/47
5.4 Electrical Characteristics
(1) Input signal level
RESET signal are at TTL level, while inputs other than this are at HCMOS level.
TTL Level HCMOS Level
“HIGH” level : 2.0V MIN “HIGH” level : 4.0V MIN
“LOW” level : 0.8V MAX “LOW” level : 1.0V MAX
(2) Output signal level
Output signal level is held at TTL.
“HIGH” level : 2.4V MIN
“LOW” level : 0.4V MAX
(3) I/O Conditions
INPUT SIGNALS
(HC373 or equivalent)
(HC04 or equivalent)
(7407 or equivalent)