LTC1482IS8#PBF

Drivers, Receivers, Transceivers Overview

The LTC1482IS8#PBF 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 circuitry that guarantees a high state for floating or shorted inputs. It provides enhanced ESD protection rated at -15kV (Human Body Model) and withstands IEC1000-4-2 Level 4 contact discharge. The component includes thermal shutdown protection and glitch-free driver outputs during power transitions.

Drivers, Receivers, Transceivers Feature Summary

• Active low carrier detect output with open-drain configuration
• Receiver fail-safe ensures high output state without external components
• Enhanced ESD protection prevents latchup and damage
• Thermal shutdown protects against excessive power dissipation

Drivers, Receivers, Transceivers Applications

• Battery-powered RS-485/RS-422 applications
• Low power RS-485/RS-422 transceivers
• Level translator circuits

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific IS8 suffix indicates the industrial temperature range (-40°C to +85°C) and SOIC-8 package. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a low power RS-485 interface with integrated carrier detection is required. Ensure the system design accommodates the 5V supply voltage and utilizes the open-drain CD pin with appropriate pull-up resistors if fast rise times are necessary.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1482 series of low power RS-485 transceivers. It is available in multiple packages including MSOP, PDIP, and SO variants. The IS8 designation specifically denotes the industrial temperature grade and surface-mount plastic SOIC-8 packaging.

Drivers, Receivers, Transceivers Replacement Considerations

LTC1482CN8#PBF: Same electrical performance but in PDIP-8 package. LTC1482CMS8#PBF: Same electrical performance but in commercial temperature range.

Drivers, Receivers, Transceivers FAQ

How does the Carrier Detect (CD) pin function?

The CD pin is an open-drain output that pulls low when a valid carrier signal is present on the A and B lines. It pulls high via an internal weak pull-up when no carrier is detected.

What is the fail-safe mechanism of the receiver?

The receiver guarantees a high logic state at the RO output if the A and B inputs are floating, shorted together, or terminated without a signal, eliminating the need for external pull-up resistors.

What ESD protection levels does the device support?

The A and B pins withstand -15kV Human Body Model, IEC1000-4-2 Level 4 (-8kV) contact discharge, and Level 3 (-8kV) air discharge without damage or latchup.