Max Speed
Max Distance
Topology
Max Nodes
| Physical Layer | Single-ended |
| Wire Count | 3-25 |
| Power Delivery | No |
| Communication Mode | Asynchronous |
| Architecture | Peer-to-Peer |
| Error Detection | Parity |
| Addressing Method | None |
| Industry Domain | Computer Systems |
| Primary Application | Computer Peripherals |
| Year Introduced | 1960 |
| Standard Body | TIA/EIA |
| Implementation Cost | Low |
| Complexity Level | Low |
| A standard for serial communication transmission of data between computers and peripheral devices. Uses voltage levels between -15V and +15V and was commonly used for modems, terminals, and serial ports. |