Linear Technology Corporation introduces the LTC2862-2865, a family of exceptionally rugged, high voltage tolerant RS485/RS422 transceivers for elimination of field failures without the need of costly external protection devices. In practical RS485 systems, installation cross-wiring faults, ground voltage faults or lightning induced surge volt-ages can cause overvoltage conditions that exceed absolute maximum ratings of typical transceivers. The LTC2862-2865 feature ±60 V overvoltage fault protection on the data transmission lines, protecting bus pins during operation and power shutdown. Whether a circuit is transmitting, receiving, in standby or powered off, the LTC2862-2865 tolerate any voltage within ±60 V without damage, increasing the robustness of any typical RS485 network. The low power family supports fast 20 Mbps and low-EMI slew-rate-limited 250 kbps data rates, as well as half- and full-duplex versions.
展开▼
