Datasheet

Thursday, 17 July 2003 MiniProject: Design Aspects Colin K McCord
EEE512J2 – Electronic Product Design Page 10 Chapter 2: Fundamentals
Baud Rate Max Distance Shielded Cable Max Distance Unshielded Cable
110 bps 5000 feet 3000 feet
300 bps 5000 feet 3000 feet
1200 bps 3000 feet 3000 feet
2400 bps 1000 feet 500 feet
4800 bps 1000 feet 250 feet
9600 bps 250 feet 250 feet
Figure 2.8c. Typical maximum distance modern line driver/receivers can manage before errors occur.
+15V
-15V
-3V
+3V
0V
Space (=0)Mark (=1)
0100000101
LSB MSB
8 Data Bits
Start Bit Stop Bit
Indeterminate
Region
Figure 2.8d. Illustration of how data is transmitted over RS232