MAX13485E/MAX13486E is a +5V, half-duplex, ±15kV ESD-protected RS-485 transceiver that features one driver and one receiver. These devices include fail-safe circuitry, guaranteeing a logic-high receiver output when receiver inputs are open or shorted. If all transmitters on a terminated bus are disabled (high impedance), the receiver outputs a logic-high. MAX13485E/MAX13486E include a hot-swap capability to eliminate false transitions on the bus during power-up or live-insertion. MAX13485E features reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free trans- mission up to 500kbps. MAX13486E driver slew rate is not limited, allowing transmit speeds up to 16Mbps. MAX13485E/MAX13486E feature a 1/4-unit load receiver input impedance, allowing up to 128 transceivers on the bus. These devices are intended for half-duplex communications. All driver outputs are protected to ±15kV ESD using the Human Body Model. MAX13485E/MAX13486E are available in 8-pin SO and space-saving 8-pin µDFN packages. The devices operate over the extended -40°C to +85°C temperature range.
The MAX13485E and MAX13486E are +5 V, half‑duplex RS‑485/RS‑422 transceivers with ±15 kV ESD protection and fail‑safe receiver circuitry. They operate over a –40 °C to +85 °C temperature range and are offered in 8‑pin SO and µDFN packages.
Key features include reduced‑slew‑rate drivers for the MAX13485E (500 kbps) and a high‑speed version (MAX13486E, 16 Mbps), hot‑swap capability, low‑power shutdown (10 µA), and a 1/4‑unit load receiver input that permits up to 128 devices on a single bus.
| Supply Voltage (VCC) | 4.75 V – 5.25 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Maximum Data Rate (MAX13485E) | 500 kbps |
| Maximum Data Rate (MAX13486E) | 16 Mbps |
| Receiver Input Impedance | 1/4‑unit load (48 kΩ), up to 128 transceivers |
| Shutdown Supply Current | 10 µA (low‑power shutdown) |
| Package Types | 8‑pin SO and 8‑pin µDFN |
They include a hot‑swap capability that eliminates false transitions on the bus during power‑up or live‑insertion.
Up to 128 transceivers can be connected thanks to the 1/4‑unit load receiver input impedance.
In low‑power shutdown mode the devices draw a maximum of 10 µA of supply current.
The transceivers are offered in standard 8‑pin SO and space‑saving 8‑pin µDFN packages.