MC74HC125ADTR2

Overview

The MC74HC125ADTR2 is a quad buffer and line driver from the HC logic series, manufactured by onsemi. It features four independent non-inverting channels with three-state outputs housed in a TSSOP-14 package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a low-level output current of 7.8 mA and a high-level output current of -7.8 mA. Static current is specified at 4 uA, with a maximum power dissipation of 450 mW. Propagation delay varies from 90 ns at 2 V to 15 ns at 6 V. The operating temperature range spans from -55 °C to +125 °C.

Feature Summary

• Provides four independent non-inverting buffering channels with three-state output capability for bus-oriented systems.
• Features low input current of 1.0 μA to minimize loading effects on preceding circuits.
• Offers high noise immunity consistent with JEDEC standard No. 7A requirements for CMOS devices.

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented systems

Procurement Notes

Verify the specific suffix 'R2' against official datasheets to confirm tape-and-reel packaging specifications. Ensure the part number matches the exact HC series variant required for your voltage and speed constraints. Cross-reference the manufacturer's latest documentation for any pinout or electrical characteristic updates prior to finalizing procurement orders.

Selection Notes

Select this component when interfacing between different logic families or driving multiple loads requiring isolation. The wide 2 V to 6 V supply range allows flexibility in various power environments. Consider the propagation delay characteristics relative to your system clock speeds. Verify that the TSSOP-14 package fits your PCB layout constraints and thermal management requirements.

Part Context

This component belongs to the MC74HC125A family of buffers. It shares pin compatibility with LS125 equivalents. The HC series utilizes CMOS technology, offering advantages in power consumption and noise tolerance compared to older bipolar technologies. It is designed for general-purpose digital signal buffering and driving applications.

Replacement Considerations

MC74HC126ADTR2G offers similar buffering but with active-high enable control instead of active-low. MC74HCT125A provides TTL-compatible inputs while maintaining similar functionality. Verify logic polarity and input compatibility before substituting these alternatives.