LAN9253-I/R4X Microchip Integrated Circuit (Quad Flat No-Lead) In Stock

Name: LAN9253-I/R4X
Brand: Microchip
SKU: LAN9253-I/R4X
Availability: InStock

Microchip LAN9253 is a 3-port EtherCAT slave controller with dual integrated PHYs supporting 100 Mbps full-duplex Ethernet. It features a 16-bit address bus, SPI and I2C host interfaces, and boundary scan in a 64-pin QFN package, enabling real-time industrial automation network connectivity.

ACTIVEIntegrated CircuitVerified Jun 2026

Package / Visual Reference

LAN9253-I/R4XQuad Flat No-Lead

Quick Facts

Manufacturer: Microchip
Package: Quad Flat No-Lead
Pin Count: 64
Lifecycle: ACTIVE
Datasheet: LAN9253-I/R4X Datasheet PDF
Category: Integrated Circuit
Price: From $6.1552(MOQ 25)
Temp Range: -40.0°C to 85.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of LAN9253-I/R4X?

3-port EtherCAT slave controller with dual integrated 100 Mbps PHYs
16-bit address bus for high-throughput data exchange
SPI and I2C host interface compatibility
25 MHz maximum clock frequency
NRZI data encoding/decoding for reliable transmission
Boundary scan (JTAG) support for board-level testing
64-pin QFN compact package
Operating temperature -40°C to +85°C

What is LAN9253-I/R4X used for?

The LAN9253 is designed for EtherCAT slave nodes in industrial robot controllers, CNC machine tool drives, and factory automation PLCs that require deterministic 100 Mbps real-time Ethernet communication. Its dual integrated PHYs with a daisy-chain port configuration eliminate the need for external Ethernet transformers in EtherCAT ring topologies. The 64-pin QFN package and SPI/I2C host interface simplify integration with existing microcontroller-based motion control designs.

What are the specifications of LAN9253-I/R4X?

Manufacturer Package Code	QFN-64
Factory Lead Time	15Weeks
Date Of Intro	2020-08-18
YTEOL	19
Address Bus Width	16
Boundary Scan	YES
Bus Compatibility	I2C; SPI
Clock Frequency-Max	25MHz
Communication Protocol	SYNC, BYTE
Data Encoding/Decoding Method	NRZI
Data Transfer Rate-Max	12.5MBps
External Data Bus Width	16
JESD-30 Code	S-XQCC-N64
JESD-609 Code	e3
Low Power Mode	YES
Number of Serial I/Os	4
Package Body Material	UNSPECIFIED
Package Equivalence Code	LCC64,.35SQ,20
Package Shape	SQUARE
Package Style	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Supply Voltage-Max	1.26V
Supply Voltage-Min	1.14V
Supply Voltage-Nom	1.2V
Surface Mount	YES
Technology	CMOS
Terminal Finish	Matte Tin (Sn)
Terminal Form	NO LEAD
Terminal Pitch	0.5mm
Terminal Position	QUAD
uPs/uCs/Peripheral ICs Type	SERIAL IO/COMMUNICATION CONTROLLER, LAN
Package	Quad Flat No-Lead

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8542.31.00.01
Country of Origin	Taiwan, Thailand

Where can I find the LAN9253-I/R4X datasheet?

LAN9253-I/R4X Datasheet Download

Official datasheet from Microchip

What are equivalent replacements for LAN9253-I/R4X?

Compatible alternatives and drop-in replacements for LAN9253-I/R4X:

LAN9253/R4XMicrochip Technology Inc LAN

Controller, 4 Channel(s), 12.5MBps, CMOS

View Part →

LAN9253T/R4XMicrochip Technology Inc LAN

Controller, 4 Channel(s), 12.5MBps, CMOS

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

How many EtherCAT ports does the LAN9253 support, and what line rate do they operate at?

The LAN9253 provides 3 EtherCAT ports with 2 integrated 100 Mbps full-duplex PHYs, enabling daisy-chain or branching network topologies without external Ethernet switches. This allows EtherCAT frames to pass through the slave node at wire speed with deterministic sub-microsecond latency, which is essential for synchronized multi-axis motor control systems.

Which host interface options does the LAN9253 offer for connecting to a microcontroller in an industrial drive design?

The LAN9253 supports both SPI and I2C host interfaces operating alongside a 16-bit parallel address bus, giving designers flexibility to connect it to a wide range of microcontrollers and DSPs. SPI operation is common for high-throughput real-time data exchange in servo drives, while I2C suits lower-bandwidth configuration and status register access, both available on the 64-pin QFN footprint.

For a compact industrial I/O module, how does the 64-pin QFN package of the LAN9253 compare to larger LQFP alternatives in PCB area?

The LAN9253's 64-pin QFN package measures approximately 9 mm x 9 mm with no protruding leads, significantly smaller than a 64-pin LQFP at roughly 12 mm x 12 mm including leads. The QFN's exposed thermal pad also improves heat dissipation during continuous 100 Mbps operation, and the no-lead outline enables finer pitch routing on 6-layer industrial PCBs where space for the EtherCAT slave node is limited.

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AvailabilityIn Stock

Reference Price (USD)

From $6.1552

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
25+	$9.2600	$231.50
29+	$7.1022	$205.96
37+	$6.8654	$254.02
49+	$6.1552	$301.60

pcs

Unit price: $9.2600 · Total: $231.50

In Stock · 24h Response · Worldwide Shipping

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Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“The anti-counterfeit verification gave us confidence we'd never had with other China suppliers.”

Rajesh Patel

Procurement Manager, VoltEdge Energy, India

LAN9253-I/R4X Microchip Integrated Circuit (Quad Flat No-Lead) In Stock

What are the key features of LAN9253-I/R4X?

What is LAN9253-I/R4X used for?

What are the specifications of LAN9253-I/R4X?

Compliance & Regulatory

Where can I find the LAN9253-I/R4X datasheet?

What are equivalent replacements for LAN9253-I/R4X?

Frequently Asked Questions

How many EtherCAT ports does the LAN9253 support, and what line rate do they operate at?

Which host interface options does the LAN9253 offer for connecting to a microcontroller in an industrial drive design?

For a compact industrial I/O module, how does the 64-pin QFN package of the LAN9253 compare to larger LQFP alternatives in PCB area?

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