74LCX541MTR

Overview

The STMicroelectronics 74LCX541MTR is a low voltage CMOS octal bus buffer featuring non-inverted logic and three-state outputs. It utilizes sub-micron silicon gate and double-layer metal wiring C2MOS technology for high-speed performance with a maximum propagation delay of 8.0 ns at VCC = 3V. The device supports an operating voltage range of 2.0V to 3.6V, including 1.5V data retention. It provides symmetrical output impedance with minimum drive currents of 24 mA at 3V. Inputs and outputs are 5V tolerant, allowing direct interfacing with 5V signal environments.

Feature Summary

• Features 5V tolerant inputs and outputs for seamless interfacing with 5V signal environments.
• Provides high-speed operation with balanced propagation delays suitable for 3.3V applications.
• Includes power-down protection on inputs and outputs to prevent excessive current draw.
• Offers symmetrical output impedance ensuring consistent high and low level drive capabilities.

Applications

• Low power and high speed 3.3V system applications
• Interfacing between 3.3V and 5V signal environments
• PCI bus level applications requiring guaranteed levels at 24 mA

Procurement Notes

Verify the specific package type required, as the MTR suffix indicates tape and reel packaging in SOP-20 format. Confirm that the design accommodates the absolute maximum ratings, particularly regarding supply voltage limits and input diode currents. Ensure ESD handling procedures are followed given the component's sensitivity. Check for any specific environmental or quality certifications required by the end application before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal buffering with 5V tolerance. It is suitable for applications needing high-speed data transfer at 3.3V with lower power consumption compared to older AC/ACT families. Consider the pinout compatibility with standard 74 series 541 designs if migrating existing layouts. Evaluate the need for three-state control via dual enable inputs G1 and G2 for complex bus architectures.

Part Context

This part belongs to the 74LCX family of low voltage CMOS logic devices from STMicroelectronics. The LCX series is designed for high-speed, low-power applications operating at 3.3V. The octal bus buffer configuration allows for the management of eight parallel data lines simultaneously. This specific model maintains functional compatibility with legacy 74 series parts while offering improved electrical characteristics.

Replacement Considerations

Direct replacements include other 74LCX541 variants from different manufacturers that maintain the same pinout and electrical specifications. Verify that substitute components support the required 5V tolerance and 24 mA drive current. Ensure the alternative package matches the SOP-20 form factor if board space is constrained.