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

Manufacturer Part Number
LAN8720AI-CP-ABC
Manufacturer
Microchip Technology
Allelco Part Number
32D-LAN8720AI-CP-ABC
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
30,365 pcs available, New & Original
Parts Description
IC TRANSCEIVER FULL 2/2 24SQFN
Package
24-SQFN (4x4)
Data sheet
LAN8720AI-CP-AB.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: 30365
  • Unit Price: $0.873
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.873 $0.87
10+ $0.733 $7.33
30+ $0.656 $19.68
100+ $0.57 $57.00
490+ $0.531 $260.19
980+ $0.514 $503.72
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

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

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 Tray
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-ABC Image
LAN8720AI-CP-ABC (1)

Manufacturer Part Number

LAN8720AI-CP-ABC

Manufacturer

Microchip Technology

Introduction

LAN8720AI-CP-ABC is an RMII fast ethernet transceiver designed for embedded applications requiring high-speed data transmission.

Product Features and Performance

Integrated RMII Interface

Supports 10BASE-T and 100BASE-TX Network Standards

Flexible Power Management Features

HP Auto-MDIX Support

Product Advantages

Low Power Consumption

Robust ESD Protection

Compact 24-QFN Package

Energy Efficient Ethernet (IEEE 802.3az)

LAN8720AI-CP-ABC Image
LAN8720AI-CP-ABC (2)

Key Technical Parameters

RMII Protocol Interface

2 Drivers and 2 Receivers

Full Duplex Capability

Voltage Supply Range: 1.6V to 3.6V

Operating Temperature Range: -40°C to 85°C

Quality and Safety Features

Integrated Voltage Regulator

Exceeds 8kV ESD Protection on Ethernet Pins

Compatibility

Compatible with RMII 1.3 Specifications

Supports IEEE 802.3-2005 Standards

Application Areas

Embedded Networking

Industrial Automation

Consumer Electronics

Automotive Industry

Internet of Things (IoT) Devices

Product Lifecycle

Status: Active

Not Nearing Discontinuation

Replacements or Upgrades Available

Several Key Reasons to Choose This Product

Offers Reliable Performance in Industrial Environments

Minimizes Power Consumption for Energy-saving Applications

Small Form Factor Suitable for Space-constrained Designs

Ensures Interoperability with IEEE Compliant Network Devices

Capability to Self-configure for Crossed or Uncrossed Cable Connections Automatically

Frequently Asked Questions(FAQ)

How does the LAN8720AI-CP-ABC handle power consumption in low-voltage RMII applications, and what considerations apply when integrating it into a 3.3V system?
The LAN8720AI-CP-ABC operates across a supply range of 1.6V to 3.6V, making it suitable for both 3.3V and lower-voltage systems commonly used in battery-powered or energy-efficient designs. At 3.3V, typical current draw under normal operation is around 50–70 mA, depending on link activity and PHY configuration. This level of efficiency supports extended operation in embedded environments without significant thermal impact. Engineers should ensure stable power delivery with adequate decoupling capacitors near the VDD pins, especially during link negotiation bursts that may momentarily increase current demand.
What are the key differences between the LAN8720AI-CP-ABC and other full-duplex transceivers like the LAN8740A or LAN9303 in terms of protocol support and pin compatibility?
While the LAN8720AI-CP-ABC uses the RMII (Reduced Media Independent Interface) with a 2-wire control bus and supports 10/100 Mbps Ethernet, alternatives such as the LAN8740A also use RMII but include integrated magnetics, reducing external component count. In contrast, the LAN9303 supports multiple protocols including RMII, MII, and RGMII, offering greater flexibility but requiring more GPIOs and higher pin counts. The LAN8720AI-CP-ABC’s compact 24-pin SQFN package makes it ideal for space-constrained applications, whereas devices with integrated magnetics or broader protocol support typically require larger footprints or additional external circuitry.
Is the LAN8720AI-CP-ABC compatible with industrial temperature ranges, and how does this affect long-term reliability in outdoor or automotive edge nodes?
Yes, the LAN8720AI-CP-ABC is rated from -40°C to 85°C, aligning with industrial-grade requirements. This wide operating range ensures stable performance in harsh environments such as remote sensors or outdoor gateways. However, while the component itself meets these specifications, system-level reliability depends on supporting components—such as crystal oscillators, magnetics, and PCB materials—being selected for similar thermal profiles. Careful layout with thermal vias and isolation from heat-generating elements helps maintain junction temperatures within safe limits over prolonged operation.
What design precautions should be taken when using the LAN8720AI-CP-ABC with a 1.8V microcontroller to avoid logic level mismatches?
Since the LAN8720AI-CP-ABC accepts core voltages from 1.6V to 3.6V, it can interface directly with 1.8V microcontrollers via its RMII interface, provided all data lines (RXD, TXD, CRS_DV) remain within valid input thresholds. Microchip specifies VIH(min) at 0.7 × VDD for most digital inputs, which means at 1.8V, a minimum high-level input is approximately 1.26V. Most 1.8V MCUs output levels above 1.35V, ensuring reliable communication without level shifting. Engineers should verify timing margins and signal rise/fall times through simulation or prototyping, as excessive capacitance on long traces may degrade edge rates and cause setup/hold violations.
How does the Moisture Sensitivity Level (MSL) of 3 for the LAN8720AI-CP-ABC influence storage and assembly scheduling in volume production?
With an MSL rating of 3 (168 hours), the LAN8720AI-CP-ABC must be assembled within 168 hours after removing from moisture barrier packaging, assuming pre-conditioning per JEDEC J-STD-033. This impacts production planning by requiring controlled storage under dry conditions (typically <10% RH). Manufacturers often track bake cycles and use desiccant packs during shipping. Failure to adhere to this timeline increases risk of popcorning during reflow, potentially leading to delamination or interconnect failure—especially critical in lead-free soldering processes with peak temperatures exceeding 245°C.
Can the LAN8720AI-CP-ABC be used with non-Microchip reference designs, and what validation steps are recommended before finalizing hardware integration?
Although Microchip provides reference designs optimized for their evaluation boards, the LAN8720AI-CP-ABC can generally be used with third-party platforms as long as electrical characteristics align—particularly clock frequencies, impedance matching, and signal integrity. However, engineers should validate key parameters such as loopback performance, auto-negotiation success rates, and jitter tolerance under actual load conditions. It's advisable to perform time-domain reflectometry (TDR) on differential pairs and confirm magnetic transformer coupling efficiency if using discrete magnetics. Functional testing across the full temperature range further ensures robustness beyond datasheet nominal values.
Does the LAN8720AI-CP-ABC support Energy Efficient Ethernet (EEE), and how would enabling this affect power-down behavior and wake-up latency?
No, the LAN8720AI-CP-ABC does not implement IEEE 802.3az Energy Efficient Ethernet features. Instead, it enters a reduced-power state during idle periods via internal clock gating and PHY sleep modes controllable through management registers. Typical wake-up latency from sleep is under 1 ms, sufficient for many low-duty-cycle IoT applications. Designers aiming for ultra-low average power may combine this with software-controlled link shutdown, though this introduces longer recovery times (several hundred milliseconds) compared to true EEE implementations.
What impact does improper grounding or split planes have on EMI performance when routing signals adjacent to the LAN8720AI-CP-ABC?
Poor grounding strategies—such as star grounding without a solid return plane or splitting analog/digital grounds—can introduce noise into the LAN8720AI-CP-ABC’s analog front end, degrading SNR and increasing bit error rates. The device relies on a clean reference voltage (often 1.8V or 3.3V) and low-impedance return paths for accurate signal detection. Best practice involves placing a continuous ground plane beneath the PHY, minimizing loop areas on RMII traces, and avoiding crossing split planes with high-speed signals. Additionally, ferrite beads or series resistors on MDIO and MDC lines help suppress conducted emissions without compromising control functionality.
How does the exposed pad on the 24-SQFN package of the LAN8720AI-CP-ABC contribute to thermal management, and what solder joint risks arise during reflow?
The exposed thermal pad enhances heat dissipation by providing a direct path to the PCB’s ground plane via thermal vias. This improves junction-to-ambient thermal resistance, helping maintain die temperature below 85°C under moderate traffic loads. However, incomplete soldering during reflow—due to insufficient solder paste or poor stencil printing—creates voids that act as insulators, raising hotspot temperatures. To mitigate, designers should follow IPC-7351 footprint guidelines, use laser-cut stencils with 1.0 mil thickness, and verify wetting through automated optical inspection (AOI) post-reflow. A properly soldered pad reduces risk of early field failures due to thermal cycling stress.
When selecting magnetics for use with the LAN8720AI-CP-ABC, what center tap requirements and winding configurations are critical for proper bias current handling?
The LAN8720AI-CP-ABC expects center-tapped transformer windings for common-mode biasing of the differential RX pairs. The center tap must be connected to a stable 1.8V or 2.5V supply through a resistor (typically 49.9Ω) to establish DC bias current (~3.5 mA). Using uncoupled windings or omitting the bias resistor causes unbalanced common-mode voltages, leading to signal distortion and potential receiver lockup. Magnetics must meet Ethernet-specific insertion loss (<12 dB at 100 MHz), isolation ratings (≥1500 Vrms), and return loss >15 dB to ensure compliance with IEEE 802.3 standards while preserving eye diagram integrity.
Are there known limitations in using the LAN8720AI-CP-ABC with crystal-free oscillator architectures, and what alternatives exist for clock generation?
Yes, the LAN8720AI-CP-ABC requires an external 25 MHz crystal oscillator or clock source for RMII operation. It does not support internal clock synthesis or use of MEMS-based oscillators without adaptation. If a crystal-free approach is desired, engineers can feed a 25 MHz clock directly from a MCU or dedicated oscillator IC into the XTI/XTO pins. Care must be taken to ensure duty cycle stability (±10%) and phase jitter <1 ns RMS, as excessive jitter degrades far-end crosstalk (FEXT) performance and may violate IEEE 802.3 compliance tests. Some designs substitute a TCXO for improved stability in noisy RF environments.
How does the RMII interface of the LAN8720AI-CP-ABC compare to MII in terms of pin count and scalability for multi-PHY systems?
The RMII interface halves the pin requirement compared to MII: RMII uses only two data lines (one 2-bit bus) versus eight for MII, plus shared control signals, resulting in significantly fewer GPIOs needed on the host processor. This makes the LAN8720AI-CP-ABC ideal for cost-sensitive or pin-limited SoCs. However, RMII imposes stricter timing constraints due to burst-mode data transfer, requiring precise synchronization between transmitter and receiver. In multi-PHY designs, each additional LAN8720AI-CP-ABC still shares the same RMII bus but requires separate MDIO/MDC management channels or daisy-chained addressing, adding complexity in arbitration logic.
What role does the PHY address configuration play in systems using multiple LAN8720AI-CP-ABC units, and how is it programmed?
Each LAN8720AI-CP-ABC is configured via bits 7:5 of the Basic Mode Status Register (address 0x01), allowing up to four unique addresses (000b to 111b). In multi-PHY systems, this enables independent register access over a single MDIO/MDC bus. For example, setting address 010b allows differentiation between two identical LAN8720AI-CP-ABC devices without physical separation. Engineers must ensure no address conflicts exist and validate register reads/writes during initialization sequences. Failure to assign unique addresses results in unpredictable behavior during auto-negotiation or link monitoring.
Given its RoHS3 compliance, what hazardous substances are excluded from the LAN8720AI-CP-ABC, and how does this benefit global regulatory adherence?
As a RoHS3-compliant device, the LAN8720AI-CP-ABC excludes restricted substances including lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr⁶⁺), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and DEHP/BPA/BBP/DBP phthalates. This ensures alignment with international directives such as EU Directive 2011/65/EU and China RoHS, simplifying market entry across North America, Europe, and Asia. Suppliers provide full SVHC (Substances of Very High Concern) declarations, and material composition reports are available upon request, supporting sustainability audits and conflict mineral compliance programs.
What are the implications of the ECCN classification (5A991B1) for export control when sourcing the LAN8720AI-CP-ABC internationally?
The Export Commodity Classification Number 5A991B1 places the LAN8720AI-CP-ABC under U.S. Commerce Control List (CCL) Category 5—Part 2, indicating it is subject to Export Administration Regulations (EAR). While not classified as encryption items, its use in networking equipment may trigger additional licensing requirements when exported to certain countries. Importers should verify local regulations and consult export compliance teams before procurement, especially for defense-related or government projects. Proper documentation including commercial invoices and end-use statements is essential to avoid customs delays or penalties.
How should the LAN8720AI-CP-ABC be handled during ESD-sensitive assembly processes to prevent latent damage?
The LAN8720AI-CP-ABC has an HBM (Human Body Model) ESD rating of ±2 kV, but repeated exposure below specification increases risk of parametric degradation even without immediate failure. Assembly personnel must use grounded wrist straps, anti-static workstations, and ESD-safe trays. Components should remain in original conductive foam until placement. Automated pick-and-place machines with ESD-protective nozzles further reduce risk. Post-assembly, functional tests under accelerated aging conditions help detect early-stage reliability issues that might manifest under field stress.

Parts with Similar Specifications

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

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

LAN8720AI-CP-ABC Datasheet PDF

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

Datasheets
Cylindrical Battery Holders.pdf
PCN Assembly/Origin
2.73KHz.pdf
PCN Packaging
Label and Packing Changes 23/Sep/2015.pdf MBB/Label Chgs 16/Nov/2018.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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DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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LAN8720AI-CP-ABC Image

LAN8720AI-CP-ABC

Microchip Technology
32D-LAN8720AI-CP-ABC

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

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