MC74HC126ADTR2G

Overview

The MC74HC126ADTR2G is a quad bus buffer featuring three-state outputs and non-inverting logic, manufactured by onsemi. It operates within a supply voltage range of 2 V to 6 V and utilizes a TSSOP-14 surface-mount package. The device provides high-level output current of -7.8 mA and low-level output current of 7.8 mA, with a static current of 4 uA. Propagation delay varies from 90 ns at 2 V to 15 ns at 6 V. It supports an operating temperature range from -55 C to +125 C and has a power dissipation rating of 450 mW.

Feature Summary

• Features four independent non-inverting buffers with separate output enable controls for flexible bus management.
• Provides three-state output capability to facilitate direct connection to bus-oriented systems without external drivers.
• Compatible with standard CMOS outputs and LSTTL loads when pull-up resistors are utilized.

Applications

• Memory address drivers in digital systems
• Clock signal distribution networks
• Bus-oriented system architectures

Procurement Notes

Verify the specific suffix ADTR2G against official datasheets to confirm tape-and-reel packaging and RoHS compliance status. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee component authenticity and traceability. Cross-reference the ordering information section for any recent product change notices that may affect pinout or electrical characteristics.

Selection Notes

Select this component for designs requiring wide voltage operation between 2 V and 6 V with high noise immunity. The HC series offers superior speed compared to older LS equivalents while maintaining CMOS input compatibility. Consider the TSSOP-14 package constraints for PCB layout and thermal management requirements under maximum load conditions.

Part Context

This part belongs to the MC74HC126A family of quad bus buffers. It shares pin compatibility with legacy LS126 devices, allowing for drop-in replacements in existing designs. The A variant typically denotes enhanced specifications or manufacturing revisions within the standard HC logic family line.

Replacement Considerations

• MC74HC126DTR2G
• MC74HC126N