LTC1484CS8#TRPBF

Drivers, Receivers, Transceivers Overview

The LTC1484CS8#TRPBF is a low power RS-485 transceiver in an 8-lead SOIC package. It operates on a single 5V supply with a maximum data rate of 5 Mbps. The device features receiver fail-safe to guarantee a high output state when inputs are floating or shorted. It withstands –15kV ESD (HBM) and includes thermal shutdown protection. Supply current is 900µA max with driver enabled, dropping to 20µA in shutdown mode.

Drivers, Receivers, Transceivers Feature Summary

• Fail-safe receiver guarantees a logic high output when inputs are open, shorted, or terminated without signal.
• Enhanced ESD protection withstands –15kV human body model and IEC-1000-4-2 Level 4 contact discharge.
• Thermal shutdown circuit forces outputs to high impedance during excessive power dissipation or faults.

Drivers, Receivers, Transceivers Applications

• Battery-powered RS-485/RS-422 communication systems
• Carrier Detect Multiple Access (CDMA) networks
• Level translation between different voltage domains

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging for automated assembly. Confirm the CS8 designation corresponds to the commercial temperature range and SOIC-8 package. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure component authenticity and correct revision level.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring robust fault protection and low standby power. The integrated fail-safe eliminates the need for external pull-up resistors in many configurations. Ensure the system operates within the specified 4.75V to 5.25V supply voltage range and respects the –7V to 12V common mode limits.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC1484 family of low power RS-485 transceivers. It is pin-compatible with the older LTC485 model, facilitating direct upgrades for improved ESD performance and lower power consumption. The family includes variants with different temperature ratings and package options.

Drivers, Receivers, Transceivers Replacement Considerations

LTC1484CS8#PBF

Drivers, Receivers, Transceivers FAQ

How does the receiver fail-safe mechanism function?

It guarantees a high receiver output state when the A and B inputs are left open, shorted together, or terminated with no signal present, preventing undefined logic states.

What is the ESD protection rating for the A and B pins?

The A and B pins withstand –15kV using the Human Body Model and meet IEC-1000-4-2 Level 4 (–8kV) contact and Level 3 (–8kV) air discharge specifications without latchup.

What triggers the thermal shutdown feature?

If the die temperature rises above 150°C due to prolonged shorts or excessive power dissipation, the thermal shutdown circuit forces the driver outputs into a high impedance state until the temperature cools.