Maxim MAX3085CSA+ half-duplex RS-485/RS-422 transceiver, 500kbps data rate, 5V supply, 8-SOIC surface-mount package, commercial temperature grade.
| Parameter | Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply voltage | 4.75V ~ 5.25V |
| Protocol | RS422, RS485 |
| Operating temperature | 0°C ~ 70°C |
| Duplex | Half |
| Package | Tube |
| Data rate | 500kbps |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 100 mV |
| Number of drivers (Receivers) | 1/1 |
500kbps is the maximum data rate; the part will run slower without issue. Half-duplex means the driver and receiver share the same pair of wires — the bus must be turned around (TX enable toggled) between transmit and receive.
For a BOM freeze, this part does not force a near-term respin. The CSA+ stays the commercial-grade pick.
The MAX3085ESA+ is the extended-temperature version of the same transceiver, rated for -40°C to +85°C compared to the CSA+'s 0°C to 70°C. Both are half-duplex, 500kbps, 5V, 8-SOIC. The CSA+ is the commercial-grade option; the ESA+ covers industrial environments.
Yes. The supply range is 4.75V to 5.25V, making it a direct fit for 5V logic and power rails. It is not designed for 3.3V supplies.