±60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers

The LTC2862/LTC2863/LTC2864/LTC2865 are low power, 20Mbps or 250kbps RS485/RS422 transceivers operating on 3V to 5.5V supplies that feature ±60V overvoltage fault protection on the data transmission lines during all modes of operation, including power-down. Low EMI slew rate limited data transmission is available in a logic-selectable 250kbps mode in the LTC2865 and in 250kbps versions of the LTC2862-LTC2864. Enhanced ESD protection allows these parts to withstand ±15kV HBM on the transceiver interface pins without latch-up or damage.

Extended ±25V input common mode range and full fail-safe operation improve data communication reliability in electrically noisy environments and in the presence of large ground loop voltages.

Part Number

Duplex

Enables

Max Data Rate

VL Pin

LTC2862-1

Half

Yes

20M

No

LTC2862-2

Half

Yes

250k

No

LTC2863-1

Full

No

20M

No

LTC2863-2

Full

No

250k

No

LTC2864-1

Full

Yes

20M

No

LTC2864-2

Full

Yes

250k

No

LTC2865

Full

Yes

20M/250k

Yes

Applications

* Supervisory Control and Data Acquisition (SCADA)

* Industrial Control and Instrumentation Networks

* Automotive and Transportation Electronics

* Building Automation, Security Systems and HVAC

* Medical Equipment

* Lighting and Sound System Control

* Protected from Overvoltage Line Faults to ±60V

* 3V to 5.5V Supply Voltage

* 20Mbps or Low EMI 250kbps Data Rate

* ±15kV ESD Interface Pins, ±8kV All Other Pins

* Extended Common Mode Range: ±25V

* Guaranteed Fail-safe Receiver Operation

* High Input Impedance Supports 256 Nodes