LTC2859HDD#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2859HDD#TRPBF is a low-power, half-duplex RS485/RS422 transceiver operating on a 5V supply. It features a logic-selectable 120Ω termination resistor and supports up to 256 nodes per bus with an eighth unit load receiver. The device guarantees a high output state under floating or shorted input conditions. It includes a logic-selectable low-EMI mode limited to 250kbps and maintains high output impedance when disabled. Enhanced ESD protection withstands ±15kV HBM without latchup. Current limiting and thermal shutdown prevent damage from bus contention. It operates within a temperature range of -40°C to +105°C.

Drivers, Receivers, Transceivers Feature Summary

• Integrated switchable 120Ω termination resistor controlled by the TE pin
• Logic-selectable low-EMI mode for reduced emissions at 250kbps
• Guaranteed failsafe receiver operation ensuring high output during idle states
• High input impedance supporting up to 256 nodes on the bus

Drivers, Receivers, Transceivers Applications

• Multi-node industrial communication networks requiring end termination control
• Backplane transceivers in embedded systems
• Level translation between different voltage domains
• Applications requiring robust ESD protection on interface pins

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package configuration matches the design requirements before integration. Confirm that the ordering suffix corresponds to the intended temperature grade and packaging format. Ensure compatibility with the system's power supply voltage and logic levels. Cross-reference the datasheet revision history for any updates to electrical characteristics or application notes relevant to the implementation.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring integrated line termination to simplify PCB layout. The half-duplex architecture suits cost-sensitive designs where bidirectional communication suffices. Consider the thermal performance if operating near the upper temperature limit. Evaluate the low-EMI mode necessity based on electromagnetic compatibility requirements of the final enclosure.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2859/LTC2861 family of 20Mbps RS485 transceivers. It shares functional similarities with the LTC2850 and LTC2851 series but operates specifically on 5V supplies. Unlike the full-duplex LTC2861, this variant provides only one driver and one receiver pair. It complements the broader Analog Devices interface portfolio designed for reliable serial communication.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2859IDD#TRPBF offers the same functionality with a commercial temperature range (0°C to 70°C). LTC2859CDD#TRPBF provides an extended range down to -40°C but stops at 85°C. For full-duplex requirements, consider the LTC2861 series. Verify pinout compatibility when substituting with other RS485 transceivers.