Terminology » Data Communication » RS232 vs RS485: Interface Differences Explained

RS232 vs RS485: Interface Differences Explained

rs232
rs485
interface
serial communication
communication protocol

This page clarifies the differences between RS232 and RS485 interface types. You’ll also find links to information on RS422, SPI, CAN, and DigRF interface types.

RS232 vs. RS485: Key Specifications

Here’s a table summarizing the key differences between RS232 and RS485:

SpecificationsRS232RS485
Max. Distance SupportedAbout 50 feetAbout 4000 feet
Max Data rate supportedAbout 20 Kbps100 kbps to 10 Mbps
Application1 Driver with 1 Receiver (One to one)1 Driver and multiple receivers (about 32), multi-drop configuration
Voltage for logic 1 and logic 0Logic 0: +5 to +15 VDC, Logic 1: -5 to -15 VDCLoaded +/-1.5VDC, Unloaded +/-6VDC
Interface mode of operationSingle endedDifferential or balanced
Load impedance in Ohms3K-7K Ohms54 Ohms
RS232: Advantages and Disadvantages

RS232: Advantages and Disadvantages

Explore the pros and cons of RS232 communication, including its benefits such as legacy support and drawbacks like speed limitations.

rs232
serial communication
data communication
RS485 Advantages and Disadvantages

RS485 Advantages and Disadvantages

Explore the pros and cons of RS485 serial communication, including distance, speed, noise immunity, and limitations like wiring complexity and data transfer.

rs485
serial communication
data transfer
RS232 to RS485 Converter Explained

RS232 to RS485 Converter Explained

Understand RS232 to RS485 and RS485 to RS232 converters, their functions, and pin configurations. Learn how they convert signal levels for different communication standards.

rs232
rs485
converter