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USB-232TTLMOS – Product Manual
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3.3V Logic Level
Logic Level is determined by the external DC
voltage value applied on the Pin#4 of the 5-pin
Terminal Blocks. If 2.5V is applied, then the Logic
level is set to 2.5V
Figure 2
2.2
Isolated Version Settings
The Isolated version setting is very simple, only 5V or 3.3V depends on the Pin#4 DIP
switch settings. The default is set at 5V.
DIP Switch Settings
Description
5V Logic Level (Default)
3.3V Logic Level