SP481E/SP485E are Sipex's products, which are half-duplex transceivers that support RS-485 and RS-422 protocols with enhanced ESD performance, supporting 10Mbps transmission rates
The SP481E and SP485E transceivers meet RS‑485 and RS‑422 specifications while consuming very little power thanks to Sipex's BiCMOS design. They feature driver and receiver enable pins, a shutdown mode for ultra‑low standby current, and ruggedized ESD tolerance of at least +15 kV.
The document provides full electrical characteristics, pin‑out diagrams, truth tables for transmit and receive functions, environmental limits, package dimensions, and ordering codes, including lead‑free and tape‑and‑reel options.
| Supply Voltage | +4.75 V to +5.25 V |
|---|---|
| Maximum Data Rate | 10 Mbps |
| Operating Temperature (Industrial) | -40 °C to +85 °C |
| Shutdown Mode Current | ≈1 pA |
| ESD Tolerance | ≥+15 kV (Human Body Model & IEC‑1000‑4‑2) |
The SP481E’s shutdown mode reduces supply current to typically about 1 pA.
Both devices tolerate at least +15 kV for the Human Body Model and IEC‑1000‑4‑2 testing methods.
The transceivers operate up to 10 Mbps.
The allowed supply voltage range is from +4.75 V to +5.25 V.