LAN8740A-EN

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LAN8740A-EN

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IC TRANSCEIVER FULL 1/1 32SQFN

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仕様

属性
Series flexPWR™
Part Status Active
Type Transceiver
Protocol MII, RMII
Number of Drivers/Receivers 1/1
Duplex Full
Data Rate 100Mbps
Voltage - Supply 1.8V ~ 3.3V
Operating Temperature 0°C ~ 70°C
Mounting Type Surface Mount
Package / Case 32-VFQFN Exposed Pad
Supplier Device Package 32-SQFN (5x5)
Base Product Number LAN8740

概要

Description

The LAN8740A-EN is a highly integrated, single-port Ethernet transceiver designed for applications requiring low power and robust performance. It is part of the LAN8700 series and supports 10BASE-T and 100BASE-TX Ethernet protocols. The device is compliant with IEEE 802.3 standards and is typically used to connect microcontrollers and processors to Ethernet networks.
Key features of the LAN8740A-EN include Auto-MDIX, which automatically detects and corrects for straight-through and crossover cables, and Wake-on-LAN (WoL) support for power management. It also offers HP Auto-MDIX for automatic configuration of crossover connections and extensive diagnostic capabilities, including a cable diagnostics function that can detect and report cable faults. The LAN8740A-EN provides low power consumption options, with advanced power-down modes, making it suitable for energy-sensitive applications.
The chip is housed in a small footprint package, making it ideal for space-constrained designs. It interfaces with Media Access Controllers (MAC) via a standard MII/RMII interface, which is commonly used in embedded networking applications.

Equivalent

The LAN8740A-EN is a low-power 10/100 Ethernet PHY transceiver. Equivalent products include:
1. Texas Instruments DP83822I
2. Microchip KSZ8081RNB
3. Broadcom BCM5241
4. Marvell 88E1512
5. Realtek RTL8201
These alternatives offer similar functionality for Ethernet connectivity with variations in power consumption, package options, and additional features. Always check the specific datasheets to ensure compatibility with your design requirements.

Features

The LAN8740A-EN is a low-power, 10/100 Mbps Ethernet PHY transceiver designed for embedded applications. Its key features include:
1. Energy Efficiency: Supports Energy Efficient Ethernet (EEE) and Wake-on-LAN functionality, optimizing power consumption.
2. Auto-Negotiation: Capable of automatic selection of speed (10/100 Mbps) and duplex mode (full/half).
3. MDI/MDIX Crossover: Automatically corrects for straight-through or crossover cables, simplifying network design and installation.
4. Cable Diagnostics: Provides real-time cable diagnostics to detect faults like short circuits or cable length issues.
5. Robust Performance: Offers excellent performance over various cable lengths and conditions with adaptive equalization and enhanced echo cancellation.
6. Compact Design: Available in small footprint QFN and QFP packages, suitable for space-constrained applications.
7. Temperature Range: Supports industrial temperature ranges, making it suitable for a wide range of environments.
8. Interface: Compatible with standard IEEE 802.3 standards, ensuring easy integration with other networking components.
These features make the LAN8740A-EN a versatile and efficient choice for various Ethernet applications, particularly in embedded systems.

Pinout

The LAN8740A-EN is a 10/100 Mbps Ethernet PHY transceiver. This device is commonly used in networking applications to interface between a MAC controller and a physical Ethernet network. The LAN8740A-EN typically comes in a 24-pin QFN package. Its key functions include:
1. MII/RMII Interface: Connects to the MAC layer, supporting both MII and RMII interfaces for flexibility in various applications.
2. Auto-MDIX: Automatically detects and corrects for crossover cables.
3. Energy Efficient Ethernet (EEE) Support: Reduces power consumption during periods of low data activity.
4. HP Auto-MDIX Support: Facilitates connection with both straight-through and crossover cables without additional configuration.
5. Wake-on-LAN Support: Allows the device to wake up from a low-power state upon receiving specific network packets.
6. Integrated Voltage Regulator: Simplifies power supply requirements by allowing operation with a single 3.3V supply.
These features make the LAN8740A-EN suitable for embedded systems requiring reliable and efficient Ethernet connectivity.

Manufacturer

The LAN8740A-EN is manufactured by Microchip Technology Inc. Microchip is a publicly traded American company known for producing microcontroller, mixed-signal, analog, and Flash-IP integrated circuits. It serves a wide array of sectors, including automotive, industrial, consumer, aerospace, and communications. Established in 1989, Microchip is recognized for its focus on embedded control applications and its comprehensive range of semiconductors.

Application

The LAN8740A-EN is a low-power, 10/100 Ethernet transceiver commonly used in various applications. It is ideal for embedded systems requiring Ethernet connectivity, such as industrial automation, consumer electronics, and smart home devices. Additionally, it's used in network peripherals like printers and IP cameras, as well as in automotive applications for in-vehicle networking. Its low power consumption and small package size make it suitable for portable and battery-powered devices. The transceiver's robust design also allows it to be used in harsh environments, contributing to applications in IoT devices and networked sensors.

Package

The LAN8740A-EN is an Ethernet transceiver from Microchip Technology, typically provided in a 24-pin QFN (Quad Flat No-leads) package. This compact package type is designed for applications requiring small form factor and efficient thermal performance.

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