Maxim Integrated MAX13085EESA+T, RS-422, RS-485 Transceiver, 1/1 Driver/Receiver, 8-SOIC (0.154", 3.90mm Width), Surface Mount, 4.5V ~ 5.5V Supply, Tape & Reel.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting type | Surface Mount |
| Voltage | 4.5V ~ 5.5V |
| Protocol | RS422, RS485 |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Number of drivers (Receivers) | 1/1 |
For BOM planning, that means no near-term risk of a forced redesign. The part is ROHS3 compliant, so it passes the standard environmental requirements for new builds.
The single driver and single receiver support half-duplex or full-duplex operation depending on how you wire the enable pins.
The part itself runs on 4.5V–5.5V, so you need a 5V supply for the transceiver. The logic pins (RO, DI) are referenced to VCC, so a 3.3V MCU will require level shifting on those signals. The bus-side differential signals remain at RS-485 levels regardless.
Both are 5V RS-485 transceivers in an 8-pin SOIC with 1/1 driver/receiver. The MAX13085EESA+T is a newer generation with improved ESD protection and typically higher data rate capability compared to the original MAX485. Pinout is compatible, so the MAX13085EESA+T can drop into a MAX485 socket as a direct upgrade without board changes.