ST485EX +/-15 kV ESD protected, low power RS-485/RS-422 transceiver

The ST485E is a low power transceiver for RS-485 and RS-422 communication. Each driver output and receiver input is protected against ±15 kV electrostatic discharge (H.B.M.) (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.

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).

技术特性

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 (H.B.M.)
- ±8 kV (IEC-1000-4-2 contact discharge)
Allows up to 256 transceivers on the bus

ST485EX 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
ST485EXDR	Active	1.468	1000	SO-8	Tape And Reel	-55 °C-125 °C	ST485EXDR

DATASHEET

下载	描述	版本	大小
ST485EX	DS2530: +/-15 kV ESD protected, low power RS-485/RS-422 transceiver	1	699KB

APPLICATION NOTES

下载	描述	版本	大小
AN1702	AN1702: ST485EX for e-meter applications	2	160KB
AN1690	AN1690: Fail-safe biasing for ST485EX	2	261KB