DP83848LFQSQ

Drivers, Receivers, Transceivers Overview

The DP83848LFQSQ is a single-port 10/100 Mb/s Ethernet transceiver from the PHYTER family, manufactured by Texas Instruments. It operates on a 3.3-V supply using 0.18-µm CMOS technology and supports both MII and RMII Rev. 1.2 MAC interfaces. The device features Auto-MDIX, IEEE 802.3 Auto-Negotiation, and integrated adaptive equalization for error-free operation beyond 137 meters of Cat-V cable. It includes ESD protection exceeding 4 kV Human Body Model and configurable LED indicators. The component is housed in a 6.00 mm × 6.00 mm WQFN 40-pin package.

Drivers, Receivers, Transceivers Feature Summary

• Supports MII and RMII Rev. 1.2 MAC interfaces with configurable strap options.
• Integrates Auto-MDIX to eliminate cabling complications and supports IEEE 802.3 Auto-Negotiation.
• Provides superior ESD protection greater than 4 kV Human Body Model for robust operation.
• Includes integrated ANSI X3.263 compliant TP-PMD physical sub-layer with adaptive equalization.

Drivers, Receivers, Transceivers Applications

• Peripheral devices
• Mobile devices
• Factory and building automation
• Base stations

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific temperature grade suffix (e.g., J, K, H) associated with the LFQSQ designation against the manufacturer's current orderable information. Confirm that the WQFN 40-pin package dimensions match the design constraints. Ensure the selected variant meets the required operating temperature range for the target application environment.

Drivers, Receivers, Transceivers Selection Notes

Select the appropriate temperature grade based on environmental requirements: Commercial (0°C to 70°C), Industrial (-40°C to 85°C), or Extreme (-40°C to 125°C). Verify interface compatibility with the host MAC, noting that RMII mode requires a 50-MHz reference clock while MII uses recovered clocks. Check if the specific variant includes the 25-MHz clock output feature if an external oscillator is to be eliminated.

Drivers, Receivers, Transceivers Part Context

This component belongs to the DP83848x PHYTER family, which offers small form factor solutions for space-sensitive embedded systems. The family includes variants with different temperature grades and pin configurations, such as the DP83848J/K for commercial/industrial use and DP83848H/M/T for extreme temperatures or clock output capabilities. All share the same core PHY functionality within the 40-pin WQFN package.

Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include other DP83848x variants like DP83848JSQ/NOPB or DP83848KSQX/NOPB, provided the temperature grade and specific pinout functions (such as CLK_OUT availability) align with the design requirements. Cross-referencing the datasheet's Device Comparison table is necessary to ensure functional equivalence.