FEATURES
TIA/EIA RS-485/RS-422 compliant ESD protection on RS-485 I/O pins ±15 kV human body model (HBM) Data rates ADM487E: 250 kbps ADM485E/ADM1487E: 2.5 Mbps Half-duplex Reduced slew rates for low EMI Common-mode input range: −7 V to +12 V Thermal shutdown and short-circuit protection 8-lead SOIC packages ADM487EW qualified for automotive applications APPLICATIONS
Energy/power metering Lighting systems Industrial control Telecommunications Security systems Instrumentation GENERAL DESCRIPTION
The ADM485E/ADM487E/ADM1487E are 5 V, low power data transceivers with ±15 kV ESD protection suitable for halfduplex communication on multipoint bus transmission lines. They are designed for balanced data transmission and comply with Telecommunication Industry Association/Electronics Industries Association (TIA/EIA) standards RS-485 and RS-422. Because only one driver is enabled at any time, the output of a disabled or power-down driver is three-stated to avoid overloading the bus. FUNCTIONAL BLOCK DIAGRAM VCC ADM485E/ ADM487E/ ADM1487E RO R RE A DE B DI D 06356-001 GND Figure 1.
Analog Devices
