MAX243EWE+T

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Transceiver
Protocol:	RS232
Number of Drivers/Receivers:	2/2
Duplex:	Full
Receiver Hysteresis:	500mV
Data Rate:	200kbps
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC
Base Part Number:	MAX243

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Introduction

Maxim Integrated\'s MAX243EWE+T is an integrated circuit (IC) driver, receiver, and transceiver designed specifically to meet the physical layer requirements of high-speed communication systems. The MAX243EWE+T is designed to help reduce the cost, complexity and power consumption of an implementation while providing connectivity across disparate protocol implementations. The overall performance of the device meets IEEE 802.3ab-2020, IEEE802.3-2012 and FAST Ethernet standards.

Functionality

The MAX243EWE+T includes both a receiver and a driver in a single IC, reducing the number of components used in a solution and simplifying the overall design. The device supports high data rates with minimal phase error and jitter. The receiver incorporates a preamplifier and waveform equalizer, which provides improved signal integrity and increased tolerance for wide-band cable structures. The drive section of the device is optimized for power efficiency, providing excellent drive strength with minimal power consumption. When transmitting, the device automatically pre-compensates for cable lengths of up to 5 meters, allowing for a simplified cable design with less skew and without the need for additional compensation components.The device utilizes SPI communications and integrates with a control microcontroller to provide a complete functional solution.

Application Field

The MAX243EWE+T is commonly used in the applications described below:

• Ethernet, FAST Ethernet and Gigabit Ethernet drop cables
• High-speed communications systems
• Broadband (CATV) systems
• Multi-media systems
• Video systems
• Telecommunications equipment

Working Principle

The MAX243EWE+T supports the transmission of data at speeds of up to 1 Gbps. The device incorporates equalization and signal conditioning circuits to detect and filter noises in the incoming signal and to provide for increased tolerance for long cables.The device includes a transmitter section which is optimized for low power consumption and to provide reliable signal transmission. Further, it includes programmable pre-emphasis, which allows for pre-compensation of cable lengths up to 5 meters, eliminating the need for additional compensation components.The receiver section contains an amplifier which amplifies a weak signal and provides greater noise immunity. The receiver section also contains an adaptive equalizer that compensates for different cable media and lengths. The device is controlled via Serial Peripheral Interface (SPI) using commands and registers that allow for configuration of the device.

Conclusion

The MAX243EWE+T integrated circuit driver, receiver, and transceiver from Maxim Integrated is designed to meet the physical layer requirements of high-speed communication systems. The device provides power efficiency with minimal signal loss, ideal for Ethernet, FAST Ethernet, and Gigabit Ethernet drop cables. The device can be easily integrated into a system and controlled via the SPI interface, allowing for easy configuration and control of the device.

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