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Differentiate between RS 232 and RS 485.

written 6.5 years ago by hetalgosavi • 1.7k

modified 4.6 years ago by prashantsaini • 0

embedded systems

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written 6.5 years ago by hetalgosavi • 1.7k

Parameters	RS 232	RS 485
Mode of operation	Single ended	Differential
Total number of drivers and receivers on 1 line	1 driver and 1 receiver	32 drivers and 32 receivers
Maximum cable length	50 feet	4000 feet
Speed	115.2 kbaud/sec at 0.25 m	50 mbps at 50 feet
Logic levels- Logic 1 Logic 0	-3 to -25 V +3 to +25 V	0 to 12 V -7 to 0 V
Input resistance of receiver	3 kΩ - 7 kΩ	≥ 12 kΩ
Slew rate (max)	30 V/usec	N/A

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