MC74VHCT240ADWR2

Overview

The MC74VHCT240ADWR2 is an octal inverting buffer and line driver manufactured by onsemi. It belongs to the VHCT logic series, providing CMOS performance with TTL-compatible inputs. The device features eight independent channels with three-state outputs, housed in a 20-SOIC package. It operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 6.1 ns, high-level output current of -8 mA, and low-level output current of 8 mA. The component supports surface mount installation and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration with three-state outputs for bus-oriented systems
• TTL-compatible input levels combined with CMOS switching characteristics
• Inverting buffer functionality for signal inversion and line driving

Applications

• Bus-oriented memory and address drivers
• Clock distribution buffers
• Signal inversion in digital logic circuits

Procurement Notes

Verify the specific suffix 'ADWR2' against official datasheets to confirm package dimensions and tape-and-reel specifications. Ensure compatibility with 4.5 V to 5.5 V supply rails. Confirm RoHS compliance status through manufacturer documentation prior to integration into regulated assemblies.

Selection Notes

Select this component when designing systems requiring octal buffering with inverted logic states. It is suitable for applications needing TTL-compatible inputs driven by CMOS sources. Verify that the required operating temperature range aligns with industrial standards and that the SOIC-20 footprint fits the target PCB layout constraints.

Part Context

This part is part of the MC74VHCT240A series, which provides high-speed buffering solutions. It shares functional similarities with other VHCT family members but is distinct due to its inverting nature and octal channel count. The device serves as a bridge between different logic families in mixed-voltage environments.

Replacement Considerations

Direct replacements may include variants from the same VHCT family with non-inverting or different channel counts, such as the MC74VHCT244A. Cross-manufacturer equivalents should be evaluated based on pinout compatibility and electrical parameter matching.