LTC1482CMS8#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1482CMS8#TRPBF is a low power RS-485 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply and supports data rates up to 4Mbps. The device features an active low carrier detect output and receiver fail-safe functionality. Supply current is 700µA maximum with the driver disabled, 900µA maximum in driver mode without load, and 20µA maximum in shutdown mode. It provides enhanced ESD protection of –15kV (Human Body Model) and withstands IEC1000-4-2 Level 4 contact discharge. The component is housed in an 8-lead MSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Active low carrier detect output for cable insertion or removal detection
• Guaranteed high receiver output state for floating, shorted, or terminated inputs
• Enhanced ESD protection without latchup or damage
• Thermal shutdown circuit prevents excessive power dissipation

Drivers, Receivers, Transceivers Applications

• Battery-powered RS-485/RS422 applications
• Low power RS-485/RS422 transceivers
• Level translators

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the CMS8 designation corresponds to the commercial temperature range variant. Ensure the supplier documentation matches the manufacturer's part identification to avoid receiving incorrect package types or temperature grades.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring low quiescent current and integrated carrier detection. Verify that the system operates within the specified 4.75V to 5.25V supply voltage range. Consider the 8-lead MSOP package dimensions for PCB layout constraints. Ensure the application does not require industrial temperature ratings, as this specific suffix denotes the commercial grade.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1482 series of low power RS-485 transceivers. It shares functional similarities with other devices in the family but differs in packaging and temperature specifications. The standard version is available in PDIP and SO packages, while this specific order code designates the surface mount MSOP variant intended for commercial temperature operation.

Drivers, Receivers, Transceivers Replacement Considerations

LTC1482CS8#PBF

Drivers, Receivers, Transceivers FAQ

How does the Carrier Detect pin function?

The CD pin is an open-drain output that pulls low when a carrier signal is present on the A and B lines. It pulls high via a weak internal pull-up when no carrier is detected, allowing multiple transceivers to share the same line.

What is the fail-safe mechanism of the receiver?

The receiver guarantees a high output state if the inputs are floating, shorted together, or terminated without a signal. This ensures a known logic state during idle periods or bus contention.

How is the device placed into shutdown mode?

Both the DE and DI/SHDN pins must be driven low simultaneously. In this state, the supply current drops to a maximum of 20µA, and all outputs become three-stated.