Electrical Characteristics - Citizen iDP-3221 Series User Manual

6.3.2

Electrical Characteristics

(1) Input signal level
The STB and DATA1-8 input signals are at the C-MOS level.
C-MOS Level:
High level --- 4.0 V at minimum
Low level ---- 1.0 V at maximum
TTL Level:
High level --- 2.0 V at minimum
Low level ---- 0.8 V at maximum
(2) Output signal level
All the output signals are at the C-MOS level.
High level --- 2.4 V at minimum
Low level ---- 0.4 V at maximum
(3) Input and output conditions
The DATA1-8 input signals are pulled up at 50k , and the other input signals at 50k .
[Printer Side]
The DATA1-8 output signals are pulled up at 50k
[Printer Side]
Other input signals are at the TTL level.
[Host Side]
and the other output signals 3.3k .
[Host Side]
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