MC74VHC244DTR2

Overview

The MC74VHC244DTR2 is an octal bus buffer and line driver manufactured by onsemi, belonging to the VHCT logic family. It features eight non-inverting inputs and outputs with three-state capability, housed in a TSSOP-20 surface-mount package. The device operates within a supply voltage range of 2 V to 5.5 V, supporting low-power CMOS technology. Key electrical specifications include a maximum propagation delay of 11 ns at 5 V, static current of 4 uA, and power dissipation of 450 mW. It functions reliably across an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Provides octal buffering for high-speed digital signal transmission with non-inverting logic functionality.
• Integrates three-state outputs to facilitate efficient data bus management and isolation.
• Supports wide supply voltage operation from 2 V to 5.5 V for versatile system integration.

Applications

• High-speed data bus buffering in computing systems
• Clock distribution networks requiring precise timing control
• Memory interface circuits for data storage devices

Procurement Notes

Verify the specific suffix 'DTR2' against current manufacturer documentation, as it may indicate obsolete or discontinued status compared to the 'DTR2G' variant. Confirm RoHS compliance and moisture sensitivity levels prior to procurement. Ensure the source provides valid traceability for this specific part number to avoid counterfeit components.

Selection Notes

Select this component when designing systems requiring octal buffering with three-state outputs under the 2 V to 5.5 V supply range. Consider the VHCT series compatibility if interfacing with HCT logic families. Evaluate the TSSOP-20 package constraints for PCB layout and thermal management requirements relative to the 450 mW power dissipation limit.

Part Context

This component is part of onsemi's VHCT logic family, designed for high-speed applications. It serves as a successor or alternative to older 74-series buffers, offering improved speed and lower power consumption. The octal configuration allows for parallel data handling, making it suitable for complex digital interfaces where multiple lines require simultaneous buffering and control.

Replacement Considerations

The MC74VHC244DTR2G is listed as a direct replacement. Other potential substitutes include the NLV74VHC244DTR2G and MC74VHC244DW variants, depending on packaging and environmental compliance requirements.