Electrical Characteristics - Citizen iDP-3550 User Manual

9.3.2

Electrical Characteristics

(1) Input signal level
All the input signals are at the 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 TTL level.
"HIGH" level : 2.4 V at minimum
"LOW" level : 0.4 V at maximum
(3) Input and output conditions
All the input signals are pulled up with a 3.3 k resistor.
[Printer Side]
All the output signals are pulled up with a 3.3k resistor.
[Printer Side]
Twisted Pair Wire
Twisted Pair Wire
[Host Side]
[Host Side]