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BL3085E

BELLING
Part Number BL3085E
Manufacturer BELLING
Description High-speed transceiver
Published Jul 18, 2015
Detailed Description BL3085E General Description TheBL3085E is a +/- 15kV electrostatic discharge (ESD) protected, high-speed transceiver fo...
Datasheet PDF File BL3085E PDF File

BL3085E
BL3085E

Overview
BL3085E General Description TheBL3085E is a +/- 15kV electrostatic discharge (ESD) protected, high-speed transceiver for RS-485 communication that contain one driver and one receiver.
The device features fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted.
This means that the receiver output will be logic-high even if all transmitters on a terminated bus are disabled.
The BL3085E features reduced slew-rate driver that minimizes EMI and reduces reflections caused by improperly terminated cables, allowing error-free data transmission up to 500kbps.
All transmitter outputs and receiver inputs are protected to +/- 15kV using the Human Body Model.
The transceiver typically draws 500 micron ampere of supply current when unloaded, or when fully loaded with the driver disabled.
All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus.
The BL3085E is intended for half-duplex communications.
Applications  RS-485 Communications  Level Translators  Transceivers for EMI-Sensitive Applications  Industrial Control Local Area Networks  Energy Meter Networks  Power Inverters  Building Automation Networks  Telecommunications Equipment I/O ESD protection Human Body Model: ±15kV IEC 61000-4-2： Contact discharge: ±15kV Air discharge: ±20kV Page- 1 - www.
belling.
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cn V1.
0 PIN Configuration BL3085E BL3085E Pin figure Ordering Information PART BL3085E BL3085E logic figure TEMP RANGE -40℃～+85℃ PIN PACKAGE SOP8 Pin Description BL3085E PIN NAME FUNCTION 1 Receiver Output.
When RE is low and if A - B ≧-50mV, RO will be high; if A RO - B ≦-200mV, RO will be low.
Receiver Output Enable.
Drive RE low to enable RO; RO is high impedance 2 RE when RE is high.
Drive RE high and DE low to enter low-power shutdown mode.
Driver Output Enable.
Drive DE high to enable driver outputs.
These outputs 3 DE are high impedance when DE is low.
Drive RE high and DE low to ente...


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