CD74FCT541E

Overview

The CD74FCT541E is an octal buffer and line driver manufactured by Texas Instruments, belonging to the FCT logic series. It features eight non-inverting inputs and outputs with three-state capability. The device operates within a supply voltage range of 4.75 V to 5.25 V. It utilizes a 20-pin PDIP package designed for through-hole mounting. The component supports a wide operating temperature range from -55 °C to +125 °C. Propagation delay is specified at 4.1 ns at 5 V. High drive currents are provided, with output capabilities of -32 mA for high state and 64 mA for low state.

Feature Summary

• Provides octal buffering and line driving functions with true output polarity
• Features three-state outputs controlled by active-low enable signals
• Delivers high current drive capability suitable for bus-oriented systems

Applications

• Bus-oriented architectures requiring signal buffering
• Memory module address and data line drivers
• Clock distribution circuits in digital systems

Procurement Notes

Verify the specific suffix E indicates the PDIP-20 package configuration when sourcing. Confirm RoHS compliance status as manufacturing specifications may vary by production batch. Ensure the supplier provides official datasheets matching the CD74FCT541T series documentation. Cross-reference ordering information with Texas Instruments official catalogs to validate part authenticity and current availability status.

Selection Notes

Select this component for applications requiring robust signal integrity over long traces due to high drive strength. The FCT technology offers speed comparable to LS TTL while maintaining CMOS power efficiency. Consider the PDIP package constraints for PCB layout if surface mount alternatives are not feasible. Verify that the system voltage strictly adheres to the 4.75 V to 5.25 V operational limits to prevent device damage.

Part Context

This part belongs to the Texas Instruments 74FCT family of high-speed CMOS logic devices. The 541 designation specifically identifies it as an octal buffer with three-state outputs. It serves as a standard interface component in legacy and industrial digital designs where reliable data transmission between microprocessors and peripheral devices is required.

Replacement Considerations

Compatible substitutes include CY74FCT541CTSO (SOIC package) and CY74FCT541ATQCT (SSOP package). Renesas CD74FCT541ATE is also functionally equivalent but verify lead-free certification requirements.