MC74VHC126DTR2G

Overview

The MC74VHC126DTR2G is a high-speed CMOS quad bus buffer with 3-state control inputs, fabricated using silicon gate technology. It operates within a supply voltage range of 2.0 V to 5.5 V and supports an operating temperature from -55°C to +125°C. The device features a typical propagation delay of 3.8 ns at 5.0 V and a maximum quiescent supply current of 40 µA. It provides balanced propagation delays and high noise immunity, with outputs capable of driving up to 8 mA. The component is housed in a TSSOP-14 package and includes power-down protection on inputs.

Feature Summary

• Provides non-inverting buffering for four independent channels with active-high output enable controls.
• Ensures stable output signals through internal circuitry designed for high noise immunity and low dynamic noise.
• Supports interface between 5 V systems and 3 V systems due to input structures tolerating voltages up to 5.5 V.
• Includes power-down protection on inputs to prevent unwanted signal states during low-power conditions.

Applications

• Level conversion for interfacing 3.3 V logic to 5.0 V CMOS systems
• Memory and address bus drivers
• Clock distribution buffers
• Bus-oriented architectures requiring 3-state control

Procurement Notes

Verify the specific suffix 'Q' indicates AEC-Q100 qualification and PPAP capability when automotive compliance is required. Confirm the 'DT' suffix corresponds to the TSSOP-14 package variant. Ensure RoHS compliance and lead-free status are validated against the latest manufacturer ordering information before finalizing procurement specifications.

Selection Notes

Select this component when a quad bus buffer with 3-state functionality is needed for high-speed digital applications. It is suitable for designs requiring operation across a wide temperature range and compatibility with standard CMOS logic levels. Consider the MC74VHCT126A if TTL-compatible input thresholds are necessary instead of standard CMOS levels.

Part Context

This part belongs to the MC74VHC126 family of quad bus buffers. It shares functional similarities with other members like the MC74VHC126DR2G but differs in packaging and automotive qualification. The device is part of onsemi's 74VHC series, designed to offer high-speed performance comparable to Bipolar Schottky TTL while maintaining CMOS low power dissipation characteristics.

Replacement Considerations

MC74VHC126DR2G