MC74VHCT126ADR2G

Overview

The MC74VHCT126ADR2G is a quad bus buffer manufactured by onsemi, belonging to the 74VHCT logic series. It features four non-inverting buffers with three-state outputs housed in a 14-SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to 85°C. It provides output drive currents of 8 mA for both high and low states, ensuring compatibility with standard CMOS and TTL loads.

Feature Summary

• Provides four independent non-inverting buffer channels with three-state output control
• Ensures compatibility with standard CMOS and TTL logic families through VHCT input characteristics
• Offers robust signal buffering and isolation capabilities for bus-oriented systems

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented system interconnects

Procurement Notes

Verify the exact part number suffix against official manufacturer documentation, as variations such as 'R2' versus 'R2G' may indicate different environmental compliance statuses or packaging configurations. Confirm RoHS compliance requirements for your specific application, as some variants in this series have been marked obsolete or non-compliant in public records. Always cross-reference the datasheet revision date to ensure accurate electrical specifications are used during design validation.

Selection Notes

Select this component when designing systems requiring 5 V operation with TTL-compatible inputs and high noise immunity. The 74VHCT series is suitable for applications needing moderate speed and strong drive capability. Ensure the PCB layout accommodates the 14-SOIC package dimensions. Consider thermal management if operating near the upper temperature limit, although typical digital logic applications rarely require additional cooling measures.

Part Context

This component is part of the broader 74VHCT family of high-speed CMOS logic devices produced by onsemi. These devices are designed to bridge the gap between older TTL standards and modern CMOS technologies, offering improved performance over legacy LS series parts while maintaining pin-out compatibility. The family includes various logic functions such as buffers, inverters, and gates, all sharing similar electrical characteristics and packaging options.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant are not available in the provided source material. Designers should consult the latest onsemi selection guide for compatible alternatives within the 74VHCT series, such as the MC74VHCT125ADTR2G, noting differences in enable polarity.