The LTC®1484 is a low power RS485 compatible transceiver with a fail-safe feature that guarantees a high receiver output state when the inputs are left open, shorted together or terminated with no signal present. The LTC1484 can also drive low cost residential telephone wires.
The LTC1484 is a low‑power RS485/RS422 transceiver with a fail‑safe receiver that guarantees a high output when inputs are floating, shorted, or terminated. It operates from a single 5 V supply and offers up to 32 transceivers on a single bus.
The document provides absolute maximum ratings, electrical and switching characteristics, typical performance curves, pin functions, and package dimensions for the MSOP, PDIP, and SO variants.
| Quiescent Current in Shutdown Mode | 20 µA max |
|---|---|
| Number of Transceivers on Bus | Up to 32 |
In shutdown mode the LTC1484 draws up to 20 µA of quiescent current.
The device allows up to 32 transceivers on the bus.