BUS-TR
Logic bus transceiver
Drives data between two digital buses according to the selected direction and enable conditions.
Schematic
Symbols · RS232
RS-232 transceiver
In plain English
What does RS-232 transceiver mean?
An RS-232 transceiver converts between logic-level serial signals and the selected RS-232 electrical interface.
A simple example
A controller can connect to a compatible serial service port using the required conversion device.
What the drawings help you do
Put logic-level serial signals on one side and RS-232 signals on the other. These are different electrical levels, even when both carry serial data. Label the transmit, receive and reference connections according to the selected devices so crossing or connector conventions are not guessed.
- UART
- A logic-side serial communication function.
- Signal reference
- The connection against which the selected single-ended signals are interpreted.
Before using this reference
- Distinguish logic-level UART and RS-232 connections.
- Identify transmit, receive and signal-reference connections.
- Reference the exact connector and device pin assignments.
Can a logic-level UART pin connect directly to RS-232?
Not as a general rule. The electrical interfaces differ. Use a suitable transceiver and the selected device documentation to establish valid levels and connections.
Read the source: RS-232 transceiver functions
Schematic · RS232
A distinction that matters
Logic-level UART wiring is not directly interchangeable with an RS-232 electrical connection.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
RS-232 transceiver functions
RS-232 transceiver functions: public technical context for the named function. Product and compliance details remain with the publisher.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
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