The MAX3471 is a half-duplex transceiver for lithium battery-powered RS-485/RS-422 applications. It draws only 1.6µA (typical) supply current from a 3.6V supply with the receiver enabled and the driver dis- abled.
The MAX3471 half‑duplex transceiver is intended for lithium‑battery‑powered RS‑485/RS‑422 communication. It features a very low supply current, a wide operating voltage range, and true fail‑safe operation that guarantees a logic‑high receiver output when inputs are open or shorted.
The device is offered in an 8‑pin µMAX package and supports supply voltages from 2.5 V to 5.5 V, common‑mode input ranges of –7 V to +10 V, and data rates up to 64 kbps. Detailed electrical characteristics, pin descriptions, and typical operating curves are provided for designers.
| Supply current (receiver enabled) | 1.6 µA typ. |
|---|---|
| Supply voltage range | 2.5 V to 5.5 V |
| Fail‑safe operation | True fail‑safe receiver input |
| Package | 8‑pin µMAX |
| Common‑mode input voltage range | –7 V to +10 V |
| Operating temperature (MAX3471CUA) | 0 °C to +70 °C |
| Operating temperature (MAX3471EUA) | –40 °C to +85 °C |
| Maximum data rate | 64 kbps |
The MAX3471 draws only 1.6 µA typical supply current when the receiver is enabled and the driver is disabled.
It operates from 2.5 V up to 5.5 V, suitable for lithium‑battery operation.
The device is offered in an 8‑pin µMAX package.
The transceiver can operate at data rates up to 64 kbps.