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MC74ACT540M
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Product Detailed Parameters
- Description：IC INVERTER 8-INPUT 20SOEIAJ
- Series：*
- Mfr：onsemi
- 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 MC74ACT540M is an octal buffer and line driver manufactured by onsemi, belonging to the 74ACT logic series. It features eight inverting outputs with three-state capability, allowing for high-impedance isolation when disabled. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports surface-mount installation in a 20-pin SOIC package. It provides strong output drive currents of 24 mA for both sourcing and sinking, ensuring reliable signal transmission across digital bus architectures.
Feature Summary
- Three-state outputs enable effective bus isolation and multi-driver system compatibility
- TTL-compatible inputs allow direct interfacing with standard TTL logic circuits
- High-current drive capability supports multiple loads and robust signal integrity
Applications
- Memory address and data bus driving
- Clock signal distribution networks
- Microprocessor output port buffering
Procurement Notes
Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm current availability status and lead times before finalizing procurement plans.
Selection Notes
Select this component when designing systems requiring octal buffering with inverting functionality and three-state control. It is suitable for applications needing TTL input compatibility and moderate speed performance within a 5 V logic environment. Consider the 20-pin SOIC package constraints for PCB layout density and thermal management requirements during the design phase.
Part Context
This component is part of the broader 74ACT family of high-speed CMOS logic devices. It shares functional similarities with other octal buffers like the 74AC540 but offers specific voltage and drive characteristics tailored for 5 V systems. The device serves as a critical interface element between microprocessors and peripheral memory or I/O devices in complex digital electronics.
Replacement Considerations
Compatible substitutes include MM74HC540 variants for lower voltage operation and MC74AC540 for non-inverting configurations. Verify pinout compatibility and electrical parameters such as propagation delay and output current when replacing components in existing designs.
