©Sealevel Systems, Inc.
2107 Manual
11
SL9218 05/2011
Electrical Specifications
The 485-DB9 utilizes a USB UART. This chip features programmable baud rate, data format, 128-
byte TX buffer, and 256-byte RX buffer. The RS-485 transceiver supports data rates up to 921.6K baud.
Refer to Appendix C for cable length limitations.
Pin # Signal
Name
Mode
1
DATA+ Data Positive
I/O
2
DATA- Data Negative
I/O
3
DATA- Data Negative
I/O
4
DATA+ Data Positive
I/O
5
GND
Ground
6
N/C
Not Connected N/A
7
N/C
Not Connected N/A
8
N/C
Not Connected N/A
9
N/C
Not Connected N/A
