LTC489IN#PBF

Drivers, Receivers, Transceivers Overview

The LTC489IN#PBF is a low-power quad RS-485 line receiver manufactured by Analog Devices Inc. It operates on a single 5V supply with a voltage range of 4.75V to 5.25V and draws a typical supply current of 7mA. The device features four receivers with three-state outputs, supporting data rates up to 10Mb/s. It provides an extended common-mode range from -7V to +12V, allowing for significant ground differences between devices. Key electrical parameters include a typical propagation delay of 28ns, input hysteresis of 60mV, and fail-safe functionality that guarantees a high output state when inputs are open.

Drivers, Receivers, Transceivers Feature Summary

• Quad differential bus/line receivers designed for multipoint data transmission in RS-485 applications
• Three-state outputs maintain high impedance across the entire common-mode range or when powered off
• Fail-safe feature ensures a logic high output state when receiver inputs are left floating
• CMOS design offers reduced power consumption while maintaining robustness against overload and ESD damage

Drivers, Receivers, Transceivers Applications

• Multipoint data transmission systems using RS-485 standards
• Level translation circuits requiring extended common-mode voltage tolerance
• Industrial communication networks where ground potential differences exist between nodes

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and RoHS compliance as per manufacturer documentation. Confirm the package type matches the required PCB footprint, specifically the 16-lead plastic DIP (N Package) for this part number. Ensure the temperature grade corresponds to industrial requirements (-40°C to +85°C). Cross-reference the datasheet revision to confirm pinout compatibility with legacy designs referencing SN75175.

Drivers, Receivers, Transceivers Selection Notes

Select the LTC489IN#PBF when a quad receiver configuration is required without integrated drivers. This component is suitable for half-duplex systems where separate driver ICs, such as the LTC486, are utilized. Consider the 10Mb/s data rate capability and the -7V to +12V common-mode range for applications involving long twisted-pair cables or significant ground offsets. Verify that the 7mA supply current aligns with the system's power budget constraints.

Drivers, Receivers, Transceivers Part Context

The LTC489 is part of the LTC488/LTC489 family of low-power RS-485 receivers. It is functionally similar to the LTC488 but differs in control pin configuration; the LTC489 utilizes EN12 and EN34 pins for independent receiver group enabling, whereas the LTC488 uses shared EN pins. Both devices are pin-compatible with standard industry equivalents like the SN75175, facilitating direct replacements in existing designs.

Drivers, Receivers, Transceivers Replacement Considerations

The LTC489IN#PBF is pin-compatible with the SN75175. Designers should verify that the replacement maintains the same enable logic structure (EN12/EN34 vs. single EN) if migrating from other quad receiver variants.