LTC485IN8#PBF

Drivers, Receivers, Transceivers Overview

The LTC485IN#PBF is a low-power RS-485/RS-422 transceiver manufactured by Analog Devices Inc. It operates on a single 5V supply (4.75V to 5.25V) and supports data rates up to 2.5Mb/s with typical propagation delays of 30ns and skew of 5ns. The device features an extended common-mode range from -7V to +12V, allowing for ±7V ground differences between bus devices. It includes thermal shutdown protection, glitch-free power-up/down outputs, and fail-safe receiver inputs that guarantee a high state when inputs are open. The component is housed in an 8-lead PDIP package and is rated for operation from -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Low power CMOS design with typical supply current of 300μA
• Extended common-mode range supporting ±7V ground differences
• Thermal shutdown circuit prevents excessive power dissipation during faults
• Fail-safe receiver guarantees high output when inputs are left open

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission networks using RS-485 standard
• RS-422 communication applications requiring differential signaling
• Level translation circuits for industrial control systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and RoHS compliance as per manufacturer specifications. Confirm the N8 package designation corresponds to the 8-lead plastic DIP form factor required for your PCB layout. Ensure the temperature grade matches the I-grade (-40°C to 85°C) needed for your operational environment.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring low power consumption alongside robust ESD protection and latchup immunity. It is suitable for designs needing an extended common-mode voltage range beyond standard supply rails. Consider the 2.5Mb/s speed limit and 32-transceiver bus capacity when designing network topology.

Drivers, Receivers, Transceivers Part Context

This part belongs to the LTC485 family of low-power RS-485/RS-422 transceivers. It is pin-compatible with other variants like the LTC486 quad drivers and the ±60V protected LTC2862. The IN8 suffix specifically denotes the industrial temperature range and PDIP packaging within the broader Linear Technology product line.

Drivers, Receivers, Transceivers Replacement Considerations

LTC485CN8#PBF offers identical functionality but is rated for commercial temperature range (0°C to 70°C). For higher speed requirements, consider the LTC1485 which supports 10Mb/s operation while maintaining similar interface characteristics.