The MAX13085E is a +5.0V, ±15kV ESD-protected, RS-485/ RS-422 transceiver featuring one driver and one receiver. The device includes fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. The receiver outputs a logic-high if all transmitters on a terminated bus are disabled (high impedance). The MAX13085E includes a hot-swap capability to eliminate false transitions on the bus during power-up or hot insertion. The MAX13085E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps. The MAX13085E is ideal for half-duplex communications and it draws 1.2mA of supply current when unloaded or when fully loaded with the drivers disabled. The MAX13085E has a 1/8-unit load receiver input imped- ance, allowing up to 256 transceivers on the bus.
The MAX13085E transceiver provides a single driver and receiver for half‑duplex RS‑485/RS‑422 communication. It includes fail‑safe circuitry that forces a logic‑high output when the bus is open or shorted, and a hot‑swap input structure to prevent false transitions during power‑up or insertion. The device operates from a +5 V supply and offers extended ESD protection of up to +15 kV HBM.
Typical applications include utility meters, lighting systems, industrial control, telecom, security, and instrumentation. The part is offered in 8‑pin SO and PDIP packages and supports up to 256 transceivers on a single bus when terminated correctly.
| Maximum Data Rate | 500 kbps |
|---|---|
| ESD Protection | +15 kV HBM |
| Fail‑Safe Receiver | Enabled |
| Hot‑Swap Capability | Enabled |
| Maximum Number of Transceivers on Bus | 256 |
| Package Types | 8‑pin SO, PDIP |
The device supports up to 500 kbps data rate.
Up to 256 transceivers can be placed on a terminated bus.
It provides +15 kV human‑body‑model ESD protection.