Product Description
Copyright © 2018 by E.E.P.D. GmbH All rights reserved
Hardware Reference Manual – IM232/IM485
15
3.3.2 RS485 / RS422 Full Duplex
Transceiver SN65HVD31 (IM485B
only)
•
1/8 Unit-Load option available (up to 256 Nodes on the
bus).
•
Bus-pin ESD protection exceeds 15 kV HBM.
•
Low-current standby mode: < 1 mA.
•
Glitch-free power-up and power-down protection for
hot-plugging applications.
•
Bus idle, open, and short circuit failsafe.
•
Driver current limiting and thermal shutdown.
•
Designed for RS422 and RS485 networks.
•
3 Mbit/s signaling rate.
3.3.3 RS485 Half Duplex Transceiver
SN65HVD11 (IM485A only)
•
1/8 unit-load option available (up to 256 nodes on the
bus).
•
Bus-pin ESD protection exceeds 15 kV HBM.
•
Low-current standby mode: < 1 mA.
•
Glitch-free power-up and power-down protection for
hot-plugging applications.
•
Driver current limiting and thermal shutdown.
•
3 Mbit/s signaling rate.
•
Meets or exceeds the requirements of ANSI TIA/EIA-
485-A.
•
Bus-pin short circuit protection from -7V to 12 V.
•
Open-circuit, idle-bus, and shorted-bus failsafe
receiver.
•
Thermal shutdown protection.