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CD74FCT540E
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Product Detailed Parameters
- Description：FAST OCTAL BUFFER & LINE DRIVERS
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Input Type：-
- Output Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The CD74FCT540E is an octal inverting buffer and line driver manufactured by Texas Instruments. It belongs to the FCT logic series and features three-state outputs for bus-oriented memory addressing and clock drivers. The device operates within a supply voltage range of 4.75 V to 5.25 V. It utilizes a 20-pin PDIP package and supports operation temperatures from -55°C to +125°C.
Feature Summary
- Octal inverting buffer architecture with three-state output capability
- Dual output enable inputs for flexible bus control
- High-speed CMOS technology optimized for low power consumption
- Industrial temperature range support for harsh environments
Applications
- Bus-oriented memory addressing systems
- Clock driver circuits
- Bidirectional data bus transceivers
- Parallel port interface buffers
Procurement Notes
Verify the specific suffix 'E' corresponds to the 20-pin PDIP package and industrial temperature grade (-55°C to +125°C). Confirm RoHS compliance status as indicated in official datasheets, as manufacturing processes may vary. Ensure pinout compatibility with existing PCB footprints before integration.
Selection Notes
Select this component when inverting signal buffering with high drive capability is required. The FCT series offers speed comparable to LS-TTL but with CMOS power efficiency. Consider the PDIP package only if through-hole mounting is necessary; otherwise, evaluate SOIC alternatives like the CD74FCT540DT for surface mount applications.
Part Context
This part is part of the CD74FCT family of high-speed logic devices. It serves as the inverting counterpart to non-inverting buffers like the CD74FCT541. The device is designed to replace older TTL logic families while providing improved noise immunity and lower power dissipation characteristics suitable for modern digital systems.
Replacement Considerations
Direct functional substitutes include the CY74FCT540T and SN74FCT540AT. Verify package compatibility when substituting DIP variants with SOIC or TSSOP versions. Cross-reference with CD74HC540E for CMOS-compatible designs, noting differences in drive strength and switching speed.
