ST485EC

ST485EB ST485EC - ST485EX ±15 kV ESD protected, low power RS-485/RS-422 transceiver Features ■ Low quiescent current: 300 µA ■ Designed for RS-485 interface application ■ - 7 V to 12 V common mode input voltage range ■ Driver maintains high impedance in 3-state or with the power OFF ■ 70 mV typical input hysteresis ■ 30 ns propagation delay, 5 ns skew ■ Operates from a single 5 V supply ■ Current limiting and thermal shutdown for driver overload protection ■ ESD protection: – ± 15 kV (HBM) – ± 8 kV (IEC-1000-4-2 contact discharge) ■ Allows up to 256 transceivers on the bus Description SO-8 Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that place the driver outputs into a high-impedance state. The ST485E is designed for bi-directional data communications on multipoint bus transmission lines (half-duplex applications). The ST485E is a low power transceiver for RS485 and RS-422 communication. Each driver output and receiver input is protected against ± 15 kV electrostatic discharge (HBM) (ESD) shocks, without latch-up. These parts contain one driver and one receiver in half duplex configuration. This transceiver draws 300 µA (typ.) of supply current when unloaded or fully loaded with disabled drivers. It operates from a single 5 V supply. Table 1. Device summary Order codes Temperature range Package Packaging ST485EBD ST485ECDR ST485EBDR ST485EXDR - 40 to 85 °C 0 to 70 °C - 40 to 85 °C - 55 t...