LTC2870IFE#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC2870IFE#TRPBF is a multiprotocol transceiver supporting RS232, RS485, and RS422 protocols. It operates on a single 3V to 5.5V supply voltage with a logic interface range of 1.7V to 5.5V. The device integrates one RS485 transceiver and two RS232 transceivers on shared I/O lines. It supports data rates up to 20Mbps for RS485 and 500kbps for RS232. An integrated DC/DC boost converter generates the required negative supply voltage using a small inductor and capacitor. The component features pin-controlled automatic termination resistors of 120Ω for RS485 and 5kΩ for RS232.

Drivers, Receivers, Transceivers Feature Summary

• Pin-configurable multiprotocol support for RS232, RS485, and RS422 interfaces
• Integrated DC/DC boost converter eliminates external high-voltage supplies
• Software-selectable automatic termination resistors for bus impedance matching
• High ESD protection ratings on interface pins

Drivers, Receivers, Transceivers Applications

• Point-of-sale terminals
• Cable repeaters
• Protocol translators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'I' grade designation matches the required operating temperature range of -40°C to 85°C for your application environment. Ensure the 28-lead TSSOP package dimensions align with your PCB footprint requirements before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a single IC must handle multiple serial communication standards without external switching relays. It is suitable for designs requiring reduced bill of materials by integrating termination resistors and charge pumps. Consider the shared I/O architecture if independent control of separate RS232 channels is not strictly necessary compared to the LTC2871 variant.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC2870/LTC2871 family of robust multiprotocol transceivers manufactured by Analog Devices Inc. The LTC2870 variant specifically combines one RS485 and two RS232 transceivers on shared pins, distinguishing it from the LTC2871 which offers independent control over dedicated lines. Both share the same core protocol switching and power generation capabilities.

Drivers, Receivers, Transceivers Replacement Considerations

LTC2870CFE#TRPBF (Commercial Grade)

Drivers, Receivers, Transceivers FAQ

How does the device manage RS485 termination?

The LTC2870IFE#TRPBF includes an integrated 120Ω termination resistor that can be enabled or disabled via the TE485 pin, eliminating the need for external resistors.

What is the maximum data rate supported for RS485?

The device supports a maximum data rate of 20Mbps for RS485 operations.

Does the component require multiple supply voltages?

No, it operates on a single 3V to 5.5V supply. An internal DC/DC boost converter generates the necessary negative voltage for RS232 drivers.