MC74VHCT126ADR2

Overview

The MC74VHCT126ADR2 is an obsolete quad bus buffer and line driver manufactured by onsemi. 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 4.5V to 5.5V. It provides output drive currents of 8mA for both high and low states. The component supports surface mount mounting and functions across an operating temperature range of -40°C to 85°C.

Feature Summary

• Contains four independent non-inverting buffer elements
• Provides three-state output capability for bus holding
• Compatible with TTL voltage levels via VHCT series design

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented systems

Procurement Notes

This part number is officially marked as obsolete and no longer manufactured by onsemi. Verification of current availability requires checking for replacement components or alternative sources. Users should confirm end-of-life status through official manufacturer channels before procurement planning.

Selection Notes

Designers requiring this functionality must identify active replacements within the 74VHCT family. Selection criteria should focus on maintaining the 14-SOIC footprint and 3-state output requirements. Verify that substitute parts support the same 4.5V to 5.5V supply range and 8mA drive current specifications.

Part Context

The MC74VHCT126ADR2 belongs to the 74VHCT logic series, which bridges CMOS technology with TTL input compatibility. This specific model integrates four buffers into a single package, facilitating compact circuit designs for digital signal routing and isolation tasks in standard 5V logic environments.

Replacement Considerations

Check for MC74VHCT126ADTR2G or similar suffix variations from onsemi. Verify pinout compatibility and electrical parameters against the original datasheet before substitution.