MC74VHC126DR2G

Overview

The MC74VHC126DR2G is a high-speed CMOS quad bus buffer with 3-state control inputs, fabricated using silicon gate technology. It operates within a voltage range of 2.0 V to 5.5 V and features balanced propagation delays typical of Bipolar Schottky TTL equivalents while maintaining low power dissipation. The device includes power-down protection on inputs and offers high noise immunity. It is housed in a SOIC-14 package and is Pb-Free and RoHS compliant.

Feature Summary

• High-speed non-inverting operation with balanced propagation delays
• Quad bus buffering with active-high 3-state output enable control
• Power-down protection provided on all input lines
• Pin and function compatible with standard logic families

Applications

• Level conversion between 3.3 V and 5.0 V systems
• Interfacing 5 V systems to 3 V systems
• Bus-oriented memory and address drivers

Procurement Notes

Verify the specific suffix 'DR2G' corresponds to the SOIC-14 package and tape & reel shipping configuration as listed in the ordering information. Confirm that the '-Q' suffix is not required if automotive qualification or unique site control changes are necessary for the application. Ensure compliance with AEC-Q100 requirements only if the part number explicitly includes the '-Q' designation.

Selection Notes

Select this component when a quad bus buffer with 3-state outputs is required for high-speed digital applications. It is suitable for designs needing compatibility with standard CMOS levels and operation across a wide temperature range from -55°C to +125°C. Consider the MC74VHCT126A variant if TTL-compatible input levels are needed instead of standard CMOS levels.

Part Context

This device belongs to the MC74VHC126 family of quad bus buffers manufactured by onsemi. It shares functional similarities with other members of the 74VHC series but is distinguished by its specific packaging and shipping format indicated by the DR2G suffix. The family is designed to provide high performance with low power consumption.

Replacement Considerations

Direct replacements include MC74VHC126DTR2G (TSSOP-14) and MC74VHC126DR2G (SOIC-14). Cross-manufacturer alternatives such as 74AHC126T14-13 may be considered for pin-compatible substitution.