MC74AC240DWR2G

Overview

The MC74AC240DWR2G is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic series. It features eight inverting inputs with three-state outputs housed in a 20-pin SOIC-Wide package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 24 mA. Propagation delay is specified at 8 ns at 3.3 V and 6.5 ns at 5 V. Static current is 8 uA, with a maximum power dissipation of 200 mW.

Feature Summary

• Provides octal buffering with inverting logic functionality for signal integrity maintenance.
• Features three-state outputs to facilitate bus-oriented memory and circuit driving applications.
• Operates across a wide supply voltage range from 2 V to 6 V for flexible system integration.

Applications

• Bus-oriented memory and circuit driving
• Clock drivers
• Buffering applications requiring high drive capability

Procurement Notes

Verify the specific suffix 'DWR2G' against official datasheets to confirm the SOIC-Wide-20 package and tape-and-reel packaging configuration. Ensure compatibility with RoHS directives as indicated by the manufacturer's documentation. Cross-reference the part number with authorized distributors to validate authenticity and current production status before procurement.

Selection Notes

Select this component when designing systems requiring octal buffering with inverting characteristics and three-state control. It is suitable for applications needing high output drive currents up to 24 mA. Consider the 2 V to 6 V operating range and propagation delays when matching timing requirements. Verify that the SOIC-Wide-20 package fits the PCB layout constraints.

Part Context

This component is part of the MC74AC240 family of octal buffers and line drivers. It shares functional similarities with non-inverting variants like the MC74AC244 but differs in polarity. The AC series offers improved speed and lower power consumption compared to older HC or HCT families, making it appropriate for modern digital logic interfaces.

Replacement Considerations

Direct substitutes include other MC74AC240 variants with compatible packages. Non-inverting equivalents such as MC74AC244 may be considered if polarity inversion is not required. Verify pinout compatibility and electrical specifications before substituting with parts from different manufacturers.