MC74HCT541ADTR2

Overview

The MC74HCT541ADTR2 is an octal 3-state non-inverting buffer and line driver manufactured by onsemi. It belongs to the 74HCT logic family, providing TTL-compatible inputs with CMOS outputs. The device features eight independent input/output channels housed in a 20-TSSOP surface-mount package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports output drive currents of 6 mA for both high and low states. The component is rated for extended industrial temperature ranges from -55°C to +125°C.

Feature Summary

• Octal configuration providing eight independent non-inverting buffering channels
• 3-state output capability allowing effective bus line driving and isolation
• TTL-compatible input thresholds ensuring compatibility with standard logic families
• Extended industrial temperature rating for reliable operation in harsh environments

Applications

• Bus-oriented memory and address drivers
• Clock distribution and buffering circuits
• Data acquisition systems requiring signal isolation
• Industrial control interfaces utilizing TTL/CMOS logic levels

Procurement Notes

Verify the specific suffix 'TR2' against official datasheets to confirm tape-and-reel packaging specifications. Ensure the operating environment remains within the specified -55°C to +125°C range. Confirm that the 4.5V to 5.5V supply voltage aligns with system power rails. Check for RoHS compliance status if required by assembly standards. Validate pinout compatibility during PCB layout finalization.

Selection Notes

Select this component when designing systems requiring high-density octal buffering with 3-state control. It is suitable for applications needing TTL-level input recognition with robust CMOS output drive capabilities. Consider the 20-TSSOP package constraints for board space limitations. Evaluate thermal management requirements given the extended temperature range. Compare against standard 74HC variants if lower power consumption at reduced speeds is prioritized over speed performance.

Part Context

This part is part of the widely adopted 74HCT series, bridging the gap between older TTL logic and modern CMOS technologies. The 74HCT541 variant specifically addresses the need for multi-bit data path buffering in complex digital systems. Its design supports high-speed switching while maintaining noise immunity typical of HCT logic families, making it a staple in mixed-logic interface designs.

Replacement Considerations

Direct substitutes include other manufacturers' 74HCT541 devices in TSSOP-20 packages, such as those from NXP or Texas Instruments. Verify equivalent electrical characteristics, particularly output current and propagation delay. Ensure mechanical footprint compatibility before substitution.