MC74VHCT126AMELG

Overview

The MC74VHCT126AMELG is a quad bus buffer manufactured by onsemi, designed for high-speed digital signal transmission. It features four non-inverting buffers with three-state outputs controlled by an active-high enable input. The device operates within a supply voltage range of 2.0 V to 5.5 V and utilizes silicon gate CMOS technology. It provides balanced propagation delays and low power dissipation while maintaining compatibility with standard logic families. The component is housed in a 14-pin SOIC package.

Feature Summary

• Quad bus buffer configuration with four independent non-inverting channels
• Three-state output capability managed by an active-high control input
• Operates across a wide supply voltage range from 2.0 V to 5.5 V
• Compatible with TTL logic levels at the input interface

Applications

• High-speed data bus buffering applications
• Clock distribution circuits requiring precise timing
• Memory address and data line drivers
• I/O port expansion systems

Procurement Notes

Verify the specific suffix 'AMELG' against official manufacturer documentation to confirm pinout, package dimensions, and environmental compliance status. Ensure the ordering part number matches the exact tape-and-reel or tube packaging requirements for your assembly process. Cross-reference the RoHS and REACH declarations with the current datasheet revision to guarantee regulatory adherence for your target market.

Selection Notes

Select this component when a quad buffer with three-state control is required for 5 V or 3.3 V systems. The VHC series offers speed comparable to Schottky TTL with lower power consumption. Consider the 14-pin SOIC package constraints regarding board space and thermal management. Verify that the input voltage levels align with the driving source logic family specifications.

Part Context

This part belongs to the 74VHC series of high-speed CMOS logic devices produced by onsemi. The VHC series is engineered to provide performance similar to Bipolar Schottky TTL while retaining the low power advantages of CMOS technology. The MC74VHCT126 variant specifically adds TTL-compatible input thresholds, facilitating direct interfacing between different logic families in mixed-voltage designs.

Replacement Considerations

Direct substitutes include MC74VHC126DTR2G and MC74VHC126DR2G. These alternatives share identical logical functionality and pin configurations but may differ in packaging format or manufacturing lot specifications. Verify electrical characteristics and package dimensions before substitution.