MC74VHCT244ADTR2G

Overview

The MC74VHCT244ADTR2G is an octal bus buffer and line driver from the VHCT logic family, manufactured by onsemi. It features eight inputs and eight outputs with three-state capability, housed in a TSSOP-20 package. The device operates within a supply voltage range of 4.5 V to 5.5 V and maintains a maximum static current of 4 uA. It supports a wide operating temperature range from -55°C to +125°C. Key electrical specifications include a propagation delay of 8.4 ns and a power dissipation rating of 833 mW.

Feature Summary

• Provides octal buffering and line driving functions with true output polarity.
• Integrates three-state outputs for effective bus line management and isolation.
• Ensures low quiescent power consumption through minimal static current draw.

Applications

• High-density memory module data buffering
• Clock distribution networks requiring signal integrity
• Portable equipment utilizing battery-powered logic systems

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with RoHS directives and REACH regulations as stated in the product datasheet. Confirm that the intended application environment falls within the specified -55°C to +125°C operating temperature range for reliable performance.

Selection Notes

Select this component when designing systems requiring high-speed octal buffering with strict power constraints. The VHCT series offers CMOS input characteristics compatible with standard TTL logic levels while maintaining low power dissipation. Consider the TSSOP-20 footprint for space-constrained printed circuit board layouts.

Part Context

This part belongs to the MC74VHCT244A series, representing advanced high-speed CMOS technology. It serves as a critical interface component in digital logic circuits, facilitating data transfer between microprocessors and peripheral devices. The device is designed to meet rigorous industrial standards for reliability and electrical performance.

Replacement Considerations

Direct substitutes may include other octal bus drivers from the same VHCT family or equivalent parts from different manufacturers offering identical pinouts and electrical characteristics. Verify functional equivalence regarding propagation delay and output drive strength before implementation.