ADLINK Technology MXE-1300 Series, User Manual, Page: 27 / 80

Introduction 15
MXE-1300
Table 1-6: D-sub 9P signal name of COM1 & COM2 ports
1.7.3 Digital I/O Connector
The MXE-1300 provides four channel non-isolation digital input
circuits and four digital non-isolation output circuits through a ter-
minal slot of pitch 3.81mm. Spec and connector pin numbering
and definitions are as follows.
Figure 1-10: DI/O Connector Pin Numbering
7 RTS# N/S N/S
8 CTS# N/S N/S
9 RI# N/S N/S
4-Channel Digital Input 4-Channel Digital Output
Logic high: 2 to 5.25 V
Output type: Open drain N-channel
MOSFET driver with internal pull high of
200
Ω
resistance
Output high: 2.4 to 5 V
Logic low: 0 to 0.8 V
Output low: 0 to 0.5 V
Source/Sink current for all channels: 24 mA
PIN
Signal name
RS-232 RS-422 RS-485
1 5
6 10