LTC2861IGN#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2861IGN#TRPBF is a full-duplex RS-485/RS-422 transceiver operating on a 5V supply. It features a logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus with one-eighth unit load input impedance. The device operates at a maximum data rate of 20Mbps, with a low-EMI mode limited to 250kbps. Supply current reaches 900µA in receive mode and 1000µA in transmit mode. It includes failsafe receiver operation, thermal shutdown, and ±15kV HBM ESD protection.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled by the TE pin
• Logic-selectable low-EMI 250kbps slew-limited driver mode
• Guaranteed high output state under floating or shorted input conditions
• High input impedance supporting up to 256 nodes on the bus

Drivers, Receivers, Transceivers Applications

• Level translator applications
• Backplane transceiver systems
• Low EMI industrial communication networks

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant matches the design requirements, as the component family includes half-duplex options. Confirm that the temperature grade aligns with the operational environment specifications. Ensure the ordering suffix corresponds to the correct tape and reel packaging configuration for automated assembly processes.

Drivers, Receivers, Transceivers Selection Notes

Select this part when full-duplex communication is required alongside integrated line termination capabilities. The device is suitable for designs needing reduced electromagnetic interference through the selectable slew-rate control feature. Verify that the 5V supply voltage range meets the system power constraints before implementation.

Drivers, Receivers, Transceivers Part Context

This component belongs to the LTC2859/LTC2861 series of low-power RS-485/RS-422 transceivers. While the LTC2859 provides half-duplex functionality, the LTC2861 offers full-duplex operation with separate driver outputs. Both share identical receiver characteristics, including the switchable termination and failsafe features.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2859CDE#TRPBF

Drivers, Receivers, Transceivers FAQ

How does the SLO pin affect the driver performance?

Taking the SLO pin low forces the driver into a reduced slew rate mode, limiting the data rate to approximately 250kbps to control high-frequency EMI emissions.

What is the function of the TE pin?

The TE pin enables the internal 120Ω termination resistor between pins A and B when set high, allowing for logic-controlled line termination without external components.

Does the device guarantee failsafe operation?

Yes, the receiver guarantees a high output state when inputs are floating, shorted, or terminated but not driven, ensuring reliable operation across the entire common mode range.