LAN8740-EN Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The Microchip LAN8740-EN is a compact 10/100 Mbps Energy Efficient Ethernet PHY transceiver supporting MII and RMII interfaces for embedded networking. It is packaged in a 32-pin QFN and meets IEEE 802.3az Energy Efficient Ethernet for reduced power in low-traffic scenarios.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 33
- Lifecycle
- OBSOLETE
- Datasheet
- LAN8740-EN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 10/100 Mbps Fast Ethernet (IEEE 802.3) support
- MII and RMII MAC interfaces
- IEEE 802.3az Energy Efficient Ethernet (EEE) compliance
- 32-pin QFN (XQCC-N32) surface-mount package
- Single-function Ethernet transceiver with auto-negotiation
- Commercial temperature grade operation
Applications
The LAN8740-EN is used in embedded systems requiring cost-effective 10/100 Mbps wired Ethernet connectivity, such as industrial Ethernet nodes, IoT gateways, and network-attached embedded controllers. Its RMII interface allows direct connection to popular SoCs and microcontrollers with built-in MAC peripherals, minimizing external component count. Energy Efficient Ethernet support makes it particularly attractive for always-on low-bandwidth devices where reducing power consumption during idle periods is important.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| JESD-30 Code | S-XQCC-N32 |
| Number of Functions | 1 |
| Package Body Material | UNSPECIFIED |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Surface Mount | YES |
| Telecom IC Type | ETHERNET TRANSCEIVER |
| Temperature Grade | COMMERCIAL |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Which MAC interface modes does the LAN8740-EN support, and what line rates does it provide?
The LAN8740-EN supports both MII and RMII MAC interfaces and operates at 10 Mbps or 100 Mbps Ethernet line rates with auto-negotiation, making it compatible with a wide range of microcontrollers and SoCs that include an integrated 10/100 MAC peripheral.
How does the LAN8740-EN reduce power consumption in an always-on IoT device?
The LAN8740-EN complies with IEEE 802.3az Energy Efficient Ethernet, which allows the PHY to enter a low-power idle state during periods of low or no data traffic. This can reduce PHY power dissipation significantly compared to non-EEE transceivers, extending battery life or lowering thermal load in continuously powered IoT gateways.
What package does the LAN8740-EN use, and how does it compare to a larger LQFP Ethernet PHY for PCB layout?
The LAN8740-EN is housed in a compact 32-pin QFN (XQCC-N32) surface-mount package with an exposed thermal pad, occupying significantly less PCB area than a comparable LQFP-32 footprint. This makes routing easier on constrained two-layer boards and reduces the overall BOM footprint for small embedded Ethernet modules.
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