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Microchip Technology LAN8720A-CP-TR
- Part No.:
- LAN8720A-CP-TR
- Manufacturer:
- Microchip Technology
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
LAN8720A-CP-TR.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 24QFN
- Quantity:
Unit Price:$0.560000
Ext Price:$0.560000
- Payment:
- Shipping:
Inventory:4,970
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In Stock : 4,970 PCS
| Qty. | Unit Price | Ext Price |
| 1+ | $0.560000 | $0.560000 |
| 5000+ | $0.400000 | $2000.000000 |
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Product Details
LAN8720A-CP-TR - Microchip 10/100M Ethernet PHY IC (QFN-24 / Built-in 50MHz Clock / RMII)
LAN8720A-CP-TR is a highly integrated 10/100M Ethernet Physical Layer (PHY) transceiver from Microchip in an ultra-compact QFN-24 package (3x3mm), with built-in 50MHz clock oscillator and voltage
Product Introduction
LAN8720A-CP-TR is a highly integrated 10/100M Ethernet Physical Layer (PHY) transceiver from Microchip in an ultra-compact QFN-24 package (3x3mm), with built-in 50MHz clock oscillator and voltage regulator - one of the smallest Ethernet PHYs with built-in clock on the market.
The chip is default-configured for RMII interface, requiring only 7 pins to connect to MAC controllers (TXD[0:1], RXD[0:1], REFCLK, CRS_DV, TXEN), greatly simplifying wiring and saving microcontroller pin resources. HP Auto-MDI/X automatically handles cable polarity - no manual distinction needed.
LAN8720A is fully IEEE 802.3/802.3u compliant with EEE (Energy Efficient Ethernet) low-power protocol, power consumption below 315mW, operating temperature range -40C~+85C - widely used in industrial IoT, smart home and communication terminals.
Expert Technical Insight
This part should be selected by checking the package, pinout, operating limits and application notes in the official datasheet. For production use, confirm derating, layout and qualification requirements with the latest manufacturer documentation.
Key Benefits
3x3mm QFN-24 package, 25% smaller footprint than QFN-32, ideal for extremely space-constrained embedded designs
No external crystal needed; when MODE[2:0]=010, outputs 50MHz clock for MAC use, saving cost and PCB space
Automatically detects and corrects TX/RX polarity, eliminating need to distinguish straight-through from crossover cables
Supports IEEE 802.3az low-power idle protocol, power consumption below 315mW, green and energy-saving
Specifications
| Parameter | Value | Notes |
|---|---|---|
| Device Type | Ethernet PHY IC | Physical layer transceiver |
| Manufacturer | Microchip | Acquired via SMSC |
| Standard | IEEE 802.3/802.3u | 10Mbps/100Mbps |
| Interface | RMII (default) / MII | Simplified MII interface |
| Package | QFN-24 | 3x3mm ultra-compact package |
| Supply Voltage | 3.3V (internal regulator) | Single supply design |
| Power Consumption | <315mW | Lower in EEE mode |
| ESD Protection | 6kV HBM | Industrial-grade |
| Operating Temp | -40C ~ +85C | Industrial temperature range |
| Clock | Built-in 50MHz oscillator | Outputs 50MHz for MAC |
Package Information
LAN8720A-CP-TR uses QFN-24 package (Quad Flat No-Lead, 3x3mm) with exposed thermal pad on the bottom. Compared to LAN8710A's QFN-32 package, LAN8720A reduces 8 pins while maintaining core functionality, achieving smaller footprint. QFN-24 package has gull-wing pins arranged on inner sides with large bottom pad for ground and thermal dissipation.
PCB layout recommendation: bottom pad must be well-grounded with thermal via arrays connecting to PCB ground plane. Differential traces with 100Ω differential impedance control; RX+/RX- and TX+/TX- traces surrounded by ground fill for isolation.
Pin Definition
- TX+/TX-: Transmit Differential Pair：Connect to transmit side of network transformer. Differential output; series resistors (22~33Ω) near chip recommended to reduce EMI.
- RX+/RX-: Receive Differential Pair：Connect to receive side of network transformer. On-chip termination - no external resistors needed.
- REFCLK (Pin 4): Reference Clock：50MHz bidirectional clock. When MODE[2:0]=010, chip outputs 50MHz clock for MAC use; acts as input otherwise.
- RXD[0:1] (RMII mode): Receive Data：RMII interface receive data, connecting to MAC controller RXD pins (2-bit data).
- TXD[0:1] (RMII mode): Transmit Data：RMII interface transmit data, connecting to MAC controller TXD pins (2-bit data).
- CRS_DV/MODE2 (Pin): Carrier/Data Valid：In RMII mode acts as CRS_DV (Carrier Sense/Data Valid) combined signal; enabled when MODE[2:0]=010.
Alternative Parts
The following alternative parts are listed for reference. Before selecting an alternative, verify communication interface, supply voltage, package compatibility, and software API differences.
| Part Number | Brand | Type | Package | Key Feature |
|---|---|---|---|---|
| LAN8710A-EZC-TR | Microchip | Ethernet PHY | QFN-32 | Same brand QFN-32 version, highly similar functionality to LAN8720A but larger package |
| KSZ8081RNBIA | Microchip | Ethernet PHY | QFN-32 | Microchip KSZ series, built-in Wake-on-LAN and richer diagnostic interfaces |
| DP83848I | TI | Ethernet PHY | QFN-32 | TI solution, supports MII/RMII, extended industrial temperature range, fiber interface extension support |
| RTL8201F | Realtek | Ethernet PHY | QFN-32 | Realtek solution, pin-to-pin compatible with LAN8720A, significant cost advantage |
| AX88790B | ASIX | Ethernet PHY | QFN-32 | ASIX solution, IEEE 802.3/802.3u compliant, low-power mode |
| W5500 | WIZnet | Ethernet Chip | LGA-32 | Integrated TCP/IP stack, reduces MCU load, suitable for MCUs with limited protocol stack capability |
| ENC28J60 | Microchip | Ethernet Controller | SPDIP-28 | Microchip legacy solution, built-in MAC+PHY, but no 100Mbps support |
Package Comparison
| Part Number | Package | Pins | Compatibility | Conclusion |
|---|---|---|---|---|
| LAN8720A-CP-TR (main) | QFN-24 | 24 | - | Direct substitute |
| LAN8710A-EZC-TR | QFN-32 | 32 | Different | Functional reference only |
| KSZ8081RNBIA | QFN-32 | 32 | Different | Functional reference only |
| DP83848I | QFN-32 | 32 | Different | Functional reference only |
Manufacturer Information
Microchip Technology Inc. (NASDAQ: MCHP), headquartered in Chandler, Arizona. After acquiring SMSC in 2012, Microchip incorporated SMSC's Ethernet product family - LAN8720A series is a miniaturized representative of this product line. Compared to LAN8710A, LAN8720A maintains core PHY functionality while shrinking to QFN-24, meeting space-constrained embedded design needs.
Microchip provides complete Ethernet solutions covering 10M to Gigabit PHYs, integrated MAC+PHY Ethernet controllers, plus supporting software drivers and reference designs, helping customers quickly bring products to market.
Applications
Frequently Asked Questions
What is LAN8720A-CP-TR used for?
LAN8720A-CP-TR is used in electronic designs according to the function and limits described in the manufacturer datasheet.
Can LAN8720A-CP-TR be replaced by another part?
Only after verifying package, pinout, electrical limits and software or circuit compatibility.
Where should the final parameters be checked?
Use the official manufacturer datasheet and latest ordering documentation before final design release.
Disclaimer
Information Accuracy: Technical specifications on this page are based on Microchip official datasheet (DS00002349C). We strive for accuracy and completeness, but specifications are subject to change without notice. Design engineers should verify all parameters before final design.
Product Authenticity: We guarantee all products are genuine factory originals with complete material traceability.
Technical Support: Free technical consultation available before and after purchase.
Application Note: This product page is for reference only. Suitability for specific applications should be verified by design engineers based on actual system requirements.
LAN8720A-CP-TR Specifications
- Specifications
- Attributes
- Property Value
- Manufacturer
- Microchip Technology
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Part Status:
- Active
- Type:
- Transceiver
- Protocol:
- RMII
- Duplex:
- Full
- Receiver Hysteresis:
- -
- Data Rate:
- -
- Voltage - Supply:
- 1.6V ~ 3.6V
- Operating Temperature:
- 0°C ~ 85°C
- Number of Drivers/Receivers:
- 2/2
- Grade:
- -
- Qualification:
- -
- Mounting Style:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
- Category:
- Drivers, Receivers, Transceivers
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