SP3491CN-L

Drivers, Receivers, Transceivers Overview

The SP3491CN-L is a 3.3V low-power full-duplex RS-485 and RS-422 transceiver manufactured by MaxLinear. It supports data rates up to 10 Mbps and operates from a single 3.3V supply while maintaining interoperability with 5.0V logic. The device features driver and receiver tri-state enable lines, a common-mode input voltage range of -7V to 12V, and ±200mV receiver input sensitivity. It utilizes BiCMOS technology for efficient power consumption and is compatible with industry standards such as the LTC491 and SN75180.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex communication capability supporting both RS-485 and RS-422 serial protocols
• Integrated driver and receiver tri-state enable lines for bus control
• Extended common-mode input voltage range accommodating -7V to 12V signals
• Low-power operation enabled by BiCMOS process technology

Drivers, Receivers, Transceivers Applications

• Industrial automation networks requiring full-duplex RS-485 connectivity
• Building automation systems utilizing RS-422/RS-485 protocols
• Metering applications needing low-power serial communication interfaces
• Control systems interfacing with 5.0V logic devices via 3.3V supplies

Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation on the component marking, as this part may be sourced from Exar Corporation or MaxLinear due to corporate acquisition history. Confirm that the suffix 'L' indicates lead-free compliance and RoHS adherence. Ensure the package type matches the required SOIC-14 footprint for PCB layout compatibility.

Drivers, Receivers, Transceivers Selection Notes

Select the SP3491CN-L when full-duplex operation is required, distinguishing it from half-duplex alternatives like the SP3485. Choose this component over the SP3490 if independent tri-state control of the driver and receiver is necessary for complex bus architectures. Verify that the 3.3V supply voltage aligns with the system power design before implementation.

Drivers, Receivers, Transceivers Part Context

This component belongs to the SP34xx series of low-power transceivers designed for serial communication buses. It serves as a direct replacement for legacy parts like the SN75180 and LTC491. The device is part of MaxLinear's portfolio acquired from Exar Corporation, maintaining pin-to-pin compatibility with established industry-standard interface ICs.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitutes include the SN75180 and LTC491. These components offer identical functionality and pinout configurations, allowing for direct interchangeability in existing designs without circuit modification.