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HomeProductsIntegrated Circuits (ICs)Interface - Drivers, Receivers, TransceiversLAN8720AI-CP-TR
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LAN8720AI-CP-TR - Microchip Technology

Manufacturer Part Number
LAN8720AI-CP-TR
Manufacturer
Microchip Technology
Allelco Part Number
32D-LAN8720AI-CP-TR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
27,385 pcs available, New & Original
Parts Description
IC TRANSCEIVER FULL 2/2 24SQFN
Package
24-SQFN (4x4)
Data sheet
LAN8720AI-CP-TR.pdf

PCN Assembly/Origin

2.73KHz.pdf

PCN Design/Specification

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 27385
  • Unit Price: $0.756
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.756 $0.76
10+ $0.669 $6.69
30+ $0.586 $17.58
100+ $0.54 $54.00
500+ $0.514 $257.00
1000+ $0.501 $501.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LAN8720AI-CP-TR Tech Specifications
Microchip Technology - LAN8720AI-CP-TR technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology - LAN8720AI-CP-TR

Product Attribute Attribute Value
Manufacturer Microchip Technology
Voltage - Supply 1.6V ~ 3.6V
Type Transceiver
Supplier Device Package 24-SQFN (4x4)
Series -
Protocol RMII
Package / Case 24-VFQFN Exposed Pad
Product Attribute Attribute Value
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C
Number of Drivers/Receivers 2/2
Mounting Type Surface Mount
Duplex Full
Data Rate -
Base Product Number LAN8720

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 5A991B1
HTSUS 8542.39.0001

Parts Introduction

LAN8720AI-CP-TR Image
LAN8720AI-CP-TR (1)

Manufacturer Part Number

LAN8720AI-CP-TR

Manufacturer

Microchip Technology

Introduction

Small form factor Fast Ethernet PHY providing integrated communication on Ethernet networks

LAN8720AI-CP-TR Image
LAN8720AI-CP-TR (2)

Product Features and Performance

Integration of PHYceiver for seamless interface with Ethernet controllers

Supports RMII interface for reduced pin count

HP Auto-MDIX support for automatic detection of cable connection

Supports full-duplex operation with IEEE 802.3x flow control

Energy-efficient Ethernet (IEEE 802.3az) for power savings

Flexible power management features

Small footprint 24-QFN package suitable for space-constrained applications

Product Advantages

Low-power consumption for energy-efficient designs

Robust operation over extended temperature range

Reduced BOM cost by integrating termination resistors

Easy implementation with auto-negotiation and auto polarity correction

Lead-free and RoHS compliant

Key Technical Parameters

Type: Ethernet PHY Transceiver

Protocol: RMII

Number of Drivers/Receivers: 2/2

Duplex: Full

Voltage Supply: 1.6V to 3.6V

Operating Temperature: -40°C to 85°C

Mounting Type: Surface Mount

Package / Case: 24-VFQFN Exposed Pad

Supplier Device Package: 24-QFN (4x4)

Quality and Safety Features

High-reliability design with integrated protection against electrostatic discharge (ESD)

LAN8720AI-CP-TR Image
LAN8720AI-CP-TR (3)

Compatibility

Compatible with Ethernet MACs with an RMII interface

Application Areas

Embedded systems

Networked devices

Industrial automation

Consumer electronics

Product Lifecycle

Currently active and not near discontinuation

Availability of replacements or upgrades not explicitly stated

Several Key Reasons to Choose This Product

Optimized for low-power operations, increasing battery life for portable devices

Highly integrated solution reduces external component count, simplifying design and reducing time-to-market

Supports a wide range of supply voltages (1.6V to 3.6V), offering design flexibility

Operational across a broad temperature range, ensuring reliability in harsh environments

Comprehensive feature set, including EEE, auto-MDIX, and flow control, enhancing network efficiency and interoperability

Frequently Asked Questions(FAQ)

How does the LAN8720AI-CP-TR perform in terms of power consumption when operating at 3.6V versus 1.6V, and what design trade-offs should be considered for battery-powered applications?
The LAN8720AI-CP-TR operates within a supply voltage range of 1.6V to 3.6V, which allows flexibility across various system power budgets. At lower voltages such as 1.6V, dynamic power dissipation decreases proportionally with V², significantly reducing energy consumption per data transfer—important for portable or battery-operated systems where efficiency is critical. However, lowering the supply voltage may increase sensitivity to noise and reduce signal integrity margins due to smaller noise headroom. Designers must balance this against potential increases in transmission line loss or reduced PHY performance if signal levels drop below receiver thresholds. For applications requiring both low quiescent current and stable operation over temperature, maintaining a slightly higher voltage within the range may offer better robustness.
What are the key differences between the LAN8720AI-CP-TR and other common Ethernet transceivers like the LAN8740 or DP83848 when selecting for RMII-based designs?
While the LAN8720AI-CP-TR supports full-duplex RMII communication with 2/2 drivers and receivers, alternatives such as the LAN8740 from Microchip or the DP83848 from TI offer different feature sets and pin configurations. The LAN8740 typically includes built-in magnetic isolation and integrated magnetics, reducing external component count but increasing cost and board space. In contrast, the LAN8720AI-CP-TR requires discrete magnetics but provides greater layout flexibility and lower BOM cost for basic isolated applications. Additionally, some variants support MII instead of RMII, impacting interface speed and pin usage. When choosing between these devices, engineers must evaluate whether integrated magnetics justify their use case complexity or if an external transformer solution offers superior ESD protection or regulatory compliance paths.
Can the LAN8720AI-CP-TR be used in industrial control systems operating near -40°C, and what precautions are necessary to ensure reliable communication under thermal stress?
Yes, the LAN8720AI-CP-TR is rated for operation from -40°C to +85°C, making it suitable for industrial environments including outdoor enclosures and factory automation equipment. However, extreme cold can affect passive components such as transformers and capacitors, potentially altering impedance matching and causing signal reflections. To maintain reliable RMII link integrity at low temperatures, designers should verify that the selected magnetics have stable inductance and DCR values across the full temperature range. Additionally, layout practices—such as minimizing trace lengths on differential pairs and avoiding vias near high-speed lines—are essential to preserve timing margins. Thermal derating of the PHY itself is minimal due to its CMOS construction, but ensuring adequate airflow or heat dissipation around the 24-SQFN package prevents long-term reliability issues.
What considerations apply when interfacing the LAN8720AI-CP-TR with a microcontroller lacking native RMII support?
If the host MCU does not include an RMII interface, the LAN8720AI-CP-TR cannot communicate directly. Engineers must either select a compatible microcontroller with built-in RMII or implement a software-based workaround using GPIO pins to simulate the RMII signals (TXD[1:0], TX_EN, RXD[1:0], CRS_DV, etc.) at precise timing intervals. This approach demands careful attention to clock synchronization and timing jitter, often requiring a dedicated clock source or PLL to meet RMII’s 50 MHz reference clock requirement. Alternatively, a bridge IC such as a USB-to-Ethernet controller or FPGA capable of translating between MII/RMII and another protocol may be employed. Such solutions add latency and complexity compared to hardware-native interfaces and may limit throughput or increase power consumption.
How does the Moisture Sensitivity Level (MSL) of 3 for the LAN8720AI-CP-TR impact storage and assembly processes in mass production?
With an MSL rating of 3, the LAN8720AI-CP-TR must be baked prior to reflow if stored beyond 168 hours (one week) above 30°C/60% relative humidity. Failure to adhere to JEDEC J-STD-033 guidelines risks popcorning or internal delamination during solder reflow, leading to catastrophic failure. In high-volume manufacturing, this necessitates controlled storage conditions—typically dry cabinets with desiccant—and tracking via barcodes or lot numbers. Process technicians must follow the moisture exposure clock, and rework stations should also bake affected parts before repair. Adhering to MSL 3 procedures minimizes field returns and ensures consistent yield, especially in automated assembly lines where inventory turnover is rapid.
What role does the exposed pad on the 24-SQFN package play in thermal management for the LAN8720AI-CP-TR, and how should it be handled during PCB layout?
The exposed pad on the LAN8720AI-CP-TR’s 24-SQFN (4x4) package serves dual purposes: electrical grounding for noise reduction and thermal conduction for heat dissipation. Proper attachment to a solid copper plane improves signal integrity by providing a low-impedance return path and enhances reliability by conducting heat away from the die. During PCB layout, this pad should be connected to GND with multiple vias (at least four recommended) to minimize inductance and ensure efficient thermal transfer. Avoid splitting the ground plane underneath the pad unless absolutely necessary; doing so can degrade EMI performance and increase ground bounce. Solder paste coverage must be verified during manufacturing to prevent voids that compromise both thermal and electrical contact.
Are there any known limitations regarding EMI emissions when using the LAN8720AI-CP-TR in compact IoT devices, and how can they be mitigated?
As with most high-speed analog circuits, the LAN8720AI-CP-TR generates electromagnetic emissions primarily through conducted radiation on supply lines and radiated emissions from unterminated traces and connectors. In dense IoT designs, these emissions can exceed FCC Part 15 Class B limits if not properly managed. Mitigation strategies include using ferrite beads on VDD pins, placing decoupling capacitors close to the package with low ESL types (e.g., 0201 MLCCs), and routing differential pairs with controlled impedance (typically 100Ω for Ethernet). Shielding the RJ45 connector or adding common-mode chokes can further suppress high-frequency noise. Layout symmetry and minimizing loop areas in clock and data paths are equally important to reduce far-field radiation.
How do supply rail transient events—such as brownouts or voltage spikes—affect the LAN8720AI-CP-TR, and what protective components should be added?
Although the LAN8720AI-CP-TR accepts inputs from 1.6V to 3.6V, sudden voltage drops below 1.6V can cause unintended reset or link instability, while spikes above 3.6V risk damaging internal ESD structures. To protect against such transients, series resistors (22–100Ω) can limit surge currents, and TVS diodes rated for 3.3V clamping voltage should be placed near the VDD pins. These diodes absorb fast transients without affecting normal operation but require careful selection to avoid leakage current issues at low temperatures. Additionally, bulk capacitance (e.g., 10µF tantalum + ceramic bypass caps) helps stabilize the supply during brief interruptions. Designers should validate transient response using oscilloscope probing under real-world conditions, such as plugging/unplugging cables or simulating motor loads nearby.
What factors influence the maximum achievable Ethernet data rate when pairing the LAN8720AI-CP-TR with a specific MAC layer implementation?
The LAN8720AI-CP-TR supports standard IEEE 802.3u 10BASE-T and 100BASE-TX physical layers, meaning the effective data rate remains fixed at 100 Mbps regardless of RMII configuration. However, actual throughput depends on MAC efficiency, frame size, and protocol overhead. For example, small packet transfers suffer higher protocol overhead (e.g., preamble, CRC, inter-frame gaps), reducing utilization. The RMII interface reduces pin count by halving clock frequency (25 MHz vs. MII’s 50 MHz), but introduces tighter timing constraints on data setup/hold windows. Therefore, while the PHY itself doesn’t enable faster speeds, optimal MAC-PHY co-design ensures minimal latency and maximal packet delivery success—critical for real-time applications like industrial Ethernet or video streaming over constrained networks.
Does the LAN8720AI-CP-TR require external termination resistors, and why or why not?
No, the LAN8720AI-CP-TR does not require internal or external termination resistors on the RMII signals themselves because RMII uses single-ended logic levels and operates over short PCB traces. Termination is typically unnecessary unless trace lengths exceed 10 cm or crosstalk becomes problematic in multi-device buses. However, Ethernet differential pairs (MDI/MDIX) must still be impedance-matched to 100Ω using magnetics designed for that purpose—usually provided in the RJ45 module or discrete transformer. Over-terminating or under-terminating the PHY-side traces can distort signal edges and increase eye diagram closure penalties, degrading link margin. Thus, proper magnetics selection and layout adherence are more consequential than adding resistive terminations to digital control lines.
How does the choice between Cut Tape (CT) and Digi-Reel® packaging affect procurement lead times and assembly logistics for the LAN8720AI-CP-TR?
Both Cut Tape (CT) and Digi-Reel® packaging deliver the same LAN8720AI-CP-TR device, differing only in reel format. Digi-Reel® is optimized for automated pick-and-place machines and enables continuous feeding during high-speed assembly, reducing manual handling errors. CT is suitable for lower-volume prototyping or manual placement but may incur longer lead times if not stocked locally. Suppliers often list both options to accommodate diverse manufacturing workflows—small batches benefit from CT’s simplicity, while mass producers prefer Digi-Reel® for consistency and traceability. Inventory planning should consider shelf life, MSL constraints, and compatibility with feeder systems to avoid delays in final product build.
What steps should be taken to verify correct initialization and link establishment when integrating the LAN8720AI-CP-TR into a new design?
After power-up, the LAN8720AI-CP-TR undergoes internal calibration and begins advertising capabilities via auto-negotiation registers. Designers should monitor the Basic Control Register (address 0x00) for soft reset completion and the Status Register (0x01) for link status. Use MDIO read operations to poll these registers and confirm 100BASE-TX/FULL negotiation success. Oscilloscope probing of RMII signals (especially TX_CLK and RXD[1:0]) validates timing compliance with RMII specifications. A functional test involves connecting to a known-good switch or host and verifying packet transmission/reception counters. Debugging tools like Microchip’s LAN8720 evaluation boards simplify validation and provide reference schematics for layout comparison.

Parts with Similar Specifications

The three parts on the right have similar specifications to Microchip Technology LAN8720AI-CP-TR

Product Attribute LAN8720AI-CP-TR-ABC LAN8720A-CP-TR-ABC LAN8720A-CP-TR LAN8720AI-CP-ABC
Part Number LAN8720AI-CP-TR-ABC LAN8720A-CP-TR-ABC LAN8720A-CP-TR LAN8720AI-CP-ABC
Manufacturer Microchip Technology Microchip Technology Microchip Technology Microchip Technology
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Mounting Type - Surface Mount Through Hole Surface Mount
Protocol - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Data Rate - - - -
Duplex - - - -
Type - - - -
Number of Drivers/Receivers - - - -

LAN8720AI-CP-TR Datasheet PDF

Download LAN8720AI-CP-TR pdf datasheets and Microchip Technology documentation for LAN8720AI-CP-TR - Microchip Technology.

Datasheets
Cylindrical Battery Holders.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf MBB/Label Chgs 16/Nov/2018.pdf
PCN Assembly/Origin
2.73KHz.pdf
PCN Design/Specification
Cylindrical Battery Holders.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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LAN8720AI-CP-TR Image

LAN8720AI-CP-TR

Microchip Technology
32D-LAN8720AI-CP-TR

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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