MC74AC240MELG

Overview

The MC74AC240MELG is a dual eight-buffer/driver featuring 3-state outputs, manufactured by onsemi. It operates within a supply voltage range of 2.0V to 5.5V and supports data rates up to 100MHz. The device utilizes CMOS technology for low power consumption and high noise immunity. Key electrical specifications include a typical propagation delay of 6ns at 5V and output drive capabilities suitable for bus-oriented applications. It is housed in a 24-pin TSSOP package.

Feature Summary

• Dual eight-buffer configuration with independent output enable controls
• Three-state outputs designed for direct interface to bus lines
• CMOS construction ensuring low static power dissipation

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• High-resolution signal sampling systems

Procurement Notes

Verify the complete part number including suffixes such as 'MELG' against official manufacturer documentation to ensure correct package type and tape-and-reel specifications. Confirm RoHS compliance status and operating temperature range requirements match your specific design constraints before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring dual eight-bit buffering with three-state control. Ensure the supply voltage aligns with the 2.0V to 5.5V operational range. Consider the TSSOP package dimensions for PCB layout compatibility and verify that the propagation delay characteristics meet the timing requirements of the target application circuit.

Part Context

This component belongs to the 74AC series of high-speed CMOS logic devices. It serves as a standard solution for digital signal routing in microprocessor-based systems. The AC series offers improved speed performance compared to older HC or HCT families while maintaining compatible pinouts for many legacy designs.

Replacement Considerations

Check for equivalents like MC74AC240DTR or MC74AC240DR2G from onsemi which share similar electrical characteristics but may differ in packaging or reel specifications. Verify functional compatibility with other 74AC family parts from different manufacturers if sourcing alternatives.