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KSZ9031RNXCA-TR

MCHPKSZ9031RNXCA-TR

Microchip Technology
4/4 Transceiver Full Ethernet 48-QFN (7x7)
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Overview

The KSZ9031RNXCA-TR is a highly integrated triple-speed 10/100/1000 Mbps Ethernet transceiver designed for data transmission over standard CAT-5 unshielded twisted pair cable. It features an RGMII interface for direct connection to Gigabit Ethernet MACs in processors and FPGAs, supporting data rates up to 1000 Mbps.

Why Choose This Part

The device features integrated LDO controller support for a single 3.3V supply operation and provides diagnostic features like LinkMD TDR-based cable diagnostics to identify wiring issues. It offers significant power savings with a standby current of only 300uA and supports on-chip termination resistors for the differential pairs.

Applications

Industrial Automation
High-speed communication links for programmable logic controllers and industrial Ethernet switches.
Networked Storage
Gigabit uplinks for NAS devices and media servers requiring low-latency data throughput.
Broadband Gateways
Integrated into CPE equipment to provide high-speed LAN connectivity for home and office environments.

Key Specifications

Type Transceiver
Duplex Full
Protocol Ethernet
Mounting Type Surface Mount
Package / Case 48-VFQFN Exposed Pad
Voltage - Supply 1.8V, 2.5V, 3.3V
Operating Temperature 0degC ~ 70degC
Supplier Device Package 48-QFN (7x7)
Number of Drivers/Receivers 4/4

Getting Started

Designers should prioritize the 48-QFN (7x7mm) thermal pad layout for heat dissipation and utilize the MDIO/MDC management interface for register configuration. Evaluation can be performed using Microchip's KSZ9031RNX evaluation boards which demonstrate proper RGMII signal integrity and timing alignment.

Part of Microchip KSZ Ethernet PHYs family » KSZ9031

KSZ9031 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Temp Range Stock
KSZ9031RNXCA-TR (this part) Tape & Reel VFQFN-48 0degC ~ 70degC —
KSZ9031RNXIA-TR Tape & Reel VFQFN-48 -40degC ~ 85degC 29,852
KSZ9031RNXIC-TR Tape & Reel VFQFN-48 -40degC ~ 85degC 3,857
KSZ9031MNXIA VFQFN-64 -40degC ~ 85degC —
Also available as: KSZ9031RNXCC, KSZ9031RNXIA, KSZ9031RNXIC

Also Consider

DP83867IR TITexas Instruments - Offers an industrial temperature range and enhanced ESD protection for harsh environments.
KSZ9031RNXIA-TR MCHPMicrochip Technology - Identical functional specification but rated for industrial temperature ranges (-40C to +85C).