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Electrical characteristics – Citizen Systems CBM-290 User Manual

Page 26

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CITIZEN

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6.3 Electrical characteristics

(1) Input Signal Level
All the input signals are at TTL level.
"HIGH" level

: 0.7Vcc MIN

"LOW" level

: 0.3Vcc MAX

(2) Output Signal Level
All the input signals are at TTL level.
"HIGH" level

: Vcc – 0.1V MIN

"LOW" level

: 0.1V MAX

(3) I/O Conditions
Input signal of STB and RESET are pulled up by 3.3K Ohm. Others are pulled up by 50K Ohm.

All the output signals are pulled up by 50K Ohm.

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