The MAX13448E is a full-duplex RS-485 transceiver from Texas Instruments that features input and output fault protection up to ±80V (with respect to ground).
The MAX13448E is a full‑duplex RS‑485/RS‑422 transceiver that provides ±80 V fault protection on its I/O ports, true fail‑safe receiver operation, and hot‑swap input capability. It operates from a +3.0 V to +5.5 V supply and supports data rates up to 500 kbps (250 kbps at 3.3 V). The device is offered in a 14‑pin SO package and is rated for –40 °C to +85 °C.
The datasheet includes absolute maximum ratings, electrical characteristics, switching timing, typical operating curves, pin descriptions, and detailed functional diagrams. It also describes ESD protection of ±8 kV (Human Body Model), shutdown behavior, and recommended termination for optimal fault protection.
| Supply Voltage Range | +3.0 V to +5.5 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Fault‑Protection Voltage | ±80 V on I/O ports |
| Fail‑Safe Receiver | Logic‑high output when inputs are open or shorted |
| Hot‑Swap Input Capability | Prevents false transitions during power‑up or insertion |
| Maximum Data Rate | 500 kbps at +5 V, 250 kbps at +3.3 V |
| Package | 14‑pin SO |
The device supports up to 500 kbps when powered at +5 V and up to 250 kbps at +3.3 V.
It operates from +3.0 V to +5.5 V.
The transceiver is protected against ±80 V on its RS‑485 I/O ports.