LTC1690IS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1690IS8#PBF is a low-power differential driver and receiver pair compatible with RS485 and RS422 standards, manufactured by Analog Devices Inc. It operates on a single 5V supply and supports data rates up to 5 Mbps. The device features a fail-safe receiver that guarantees a high output state when inputs are open or shorted. It includes thermal shutdown protection for the driver outputs and withstands –7V to 12V common mode voltages. The component is housed in an 8-lead plastic SO package and is specified for operation over the industrial temperature range of –40°C to 85°C.

Drivers, Receivers, Transceivers Feature Summary

• Fail-safe receiver ensures a known high logic state when inputs are floating, shorted, or terminated without a signal present.
• Thermal shutdown circuit protects against excessive power dissipation by forcing driver outputs into a high impedance state during faults.
• Robust ESD protection meets –15kV Human Body Model and IEC1000-4-2 Level 4 contact specifications.
• Glitch-free power-up/down driver outputs permit live insertion or removal of the transceiver.

Drivers, Receivers, Transceivers Applications

• Battery-powered RS485/RS422 applications
• Low power RS485/RS422 transceivers
• Level translators
• Line repeaters

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS3 conformity. Confirm the IS8 designation corresponds to the industrial temperature grade and the S8 package type. Ensure the source document matches the official Analog Devices datasheet for the LTC1690 series to validate all electrical parameters and pin configurations.

Drivers, Receivers, Transceivers Selection Notes

Select this component for full-duplex communication requiring separate driver and receiver pins. It is suitable for environments with significant ground potential differences due to its wide common mode range. Consider the 5V supply requirement and ensure the application does not require a shutdown control pin, as this variant lacks one.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1690 family of differential drivers and receivers. It is pin-compatible with the SN75179 and the older LTC490 models. The 'I' suffix denotes the industrial temperature range, while 'S8' specifies the 8-lead SOIC package format.

Drivers, Receivers, Transceivers Replacement Considerations

Pin-compatible replacements include the SN75179 and the LTC490. For lower power requirements, consider the LTC1481 or LTC1483. Higher speed options include the LTC1485 or LTC1685/LTC1686 series.