MC74VHC244DTR2G

Overview

The MC74VHC244DTR2G is an octal bus buffer and line driver manufactured by onsemi, belonging to the VHCT logic series. 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 static current consumption of 4 uA. It provides a power dissipation rating of 833 mW and maintains an operating temperature range from -55 °C to +125 °C. Propagation delay is specified at 8.4 ns.

Feature Summary

• Octal configuration providing eight independent non-inverting signal paths for high-density data routing.
• Three-state output architecture enabling direct connection to multiplexed data buses without external switching components.
• Wide supply voltage compatibility ranging from 2 V to 5.5 V, facilitating integration across various digital logic families.

Applications

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

Procurement Notes

Verify the complete part number including the suffix 'DTR2G' to ensure correct packaging and RoHS compliance. Confirm that the required operating temperature range extends to -55 °C, as this exceeds standard commercial limits. Cross-reference the datasheet for specific pinout configurations and electrical characteristics relevant to the target application environment.

Selection Notes

Select this component when an octal buffer with three-state outputs is required for wide voltage operation. The VHCT series offers CMOS input compatibility with TTL-like noise margins. Consider the TSSOP-20 package dimensions for PCB layout constraints. Evaluate the 833 mW power dissipation against thermal management capabilities if multiple units are deployed in close proximity.

Part Context

This device is part of the broader 74VHC logic family, designed for high-speed CMOS applications. It serves as a functional equivalent to other octal buffers but distinguishes itself through its specific voltage tolerance and propagation delay characteristics. The component supports modern electronic designs requiring reliable signal integrity across varying supply conditions.

Replacement Considerations

Direct substitutes include the MC74VHC244ADTR2G, which shares identical logical functionality and pinout. Verify that any alternative component matches the 2 V to 5.5 V operating range and the TSSOP-20 package form factor to ensure mechanical and electrical compatibility.