EL4543IUZ

Overview

The EL4543IUZ is a high-speed differential line driver manufactured by Renesas Electronics, formerly Intersil. It integrates three independent channels within a single package, designed for driving twisted-pair transmission lines. The device operates with a supply voltage range of 5 V to 12 V and features a gain of 2 V/V. Key electrical specifications include a bandwidth of 350 MHz, an input bias current of 10 uA, and an input offset voltage of 10 mV. It consumes 16.2 mA of operating current and provides a power supply rejection ratio (PSRR) of 70 dB. The component is housed in a 24-pin QSOP surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates three independent differential amplifier channels for multi-line signal transmission.
• Provides fixed internal gain of 2 V/V to drive twisted-pair loads efficiently.
• Features high bandwidth capability suitable for high-speed data applications.
• Includes built-in protection against thermal overload and short-circuit conditions.

Applications

• Driving RS-422 and RS-485 communication interfaces over twisted-pair cables.
• High-speed digital signal transmission in industrial control systems.
• Data acquisition systems requiring differential signaling for noise immunity.

Procurement Notes

Verify the manufacturer marking on the component body, as production may have transitioned from Intersil to Renesas Electronics. Confirm the package type is the 24-pin QSOP variant. Check for moisture sensitivity labels if storage conditions are unknown. Ensure the part number suffix matches the specific tape-and-reel or tube packaging requirements for your assembly process. Cross-reference the datasheet revision date to confirm pinout compatibility.

Selection Notes

Select this component when a compact solution for multiple differential drivers is required. The fixed 2 V/V gain simplifies circuit design by eliminating external feedback resistors. Consider the 350 MHz bandwidth for signal integrity at higher data rates. Evaluate the 16.2 mA quiescent current against system power constraints. The wide supply voltage range allows flexibility in power distribution networks.

Part Context

This device belongs to the EL4543 series of differential line drivers. It is part of Renesas' portfolio of interface ICs derived from Intersil's legacy product line. The series focuses on providing robust performance for serial communication standards. Similar parts in the family may offer different channel counts or gain configurations.

Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided documentation. Verify compatibility with any alternative devices by comparing pinouts, electrical characteristics, and package dimensions. Consult official manufacturer cross-reference lists for validated replacements.