MC74HC126ADTR2

Overview

The MC74HC126ADTR2 is a quad bus buffer from the HC logic family, manufactured by onsemi. It features four non-inverting channels with three-state outputs in a TSSOP-14 package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a propagation delay of 90 ns at 2 V and 15 ns at 6 V. Output drive capabilities are specified as -7.8 mA for high level and 7.8 mA for low level. Static current is typically 4 uA, with a maximum operating temperature of +125 C.

Feature Summary

• Provides four independent non-inverting signal paths for bus buffering applications.
• Integrates three-state output control to facilitate data transfer between buses without contention.
• Operates across a wide supply voltage range suitable for various digital logic systems.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffering
• Multiple bus transceivers

Procurement Notes

Verify the specific suffix 'G' for RoHS compliance when ordering, as the base model number may refer to older or non-compliant variants. Confirm the package type matches the required PCB footprint. Ensure the supply voltage requirements align with the system design before procurement.

Selection Notes

Select this component for designs requiring low power consumption and high-speed buffering within the HC logic family. Consider the TSSOP-14 package constraints for thermal management. Evaluate the propagation delay specifications against the system timing requirements to ensure signal integrity.

Part Context

This part belongs to the MC74HC126A series of quad bus buffers. It is part of onsemi's broader portfolio of CMOS logic integrated circuits designed for general-purpose digital applications. The HC series offers compatibility with standard TTL logic levels while maintaining low power dissipation characteristics typical of modern CMOS technology.

Replacement Considerations

Direct substitutes include the MC74HC126ADTR2G variant which includes environmental compliance markings. Other compatible parts in the same family should be verified for pinout and electrical specification equivalence.