MC74VHCT125AMELG

Overview

The MC74VHCT125AMELG is a high-speed CMOS quad bus buffer with three-state outputs, fabricated using silicon gate CMOS technology. It operates within a voltage range of 2.0 V to 5.5 V and features TTL-compatible inputs. The device provides four independent non-inverting buffers, each with a dedicated output enable control. Designed for memory address drivers, clock drivers, and bus-oriented systems, it ensures signal integrity in noisy environments while maintaining low power consumption.

Feature Summary

• TTL-compatible input thresholds ensure reliable logic level recognition across standard digital interfaces.
• Three-state outputs allow direct connection to bus structures without external pull-up resistors.
• High noise immunity meets JEDEC standards for stable operation in electrically challenging conditions.

Applications

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

Procurement Notes

Verify the exact suffix 'ELG' against the manufacturer's current datasheet to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required voltage range and temperature grade. Cross-reference RoHS compliance status directly with official documentation before procurement.

Selection Notes

Select this component when TTL-level compatibility is required alongside CMOS speed advantages. It serves as a suitable replacement for LS125 equivalents in designs needing isolated, driven bus lines. Confirm that the operating voltage aligns with the system's 2.0 V to 5.5 V supply rails and that the SOEIAJ-14 package fits the PCB layout constraints.

Part Context

This device belongs to the VHCT series, which combines the speed of advanced CMOS processes with TTL-compatible input levels. It is part of onsemi's portfolio of logic buffers designed for general-purpose digital applications requiring robust signal driving capabilities and electrical isolation between circuit stages.

Replacement Considerations

MC74VHC125ADTR2G

FAQ

Is the MC74VHCT125AMELG pin-compatible with LS125?

Yes, the device maintains the same pinout configuration as LS125 devices, facilitating direct drop-in replacements in existing designs.

What is the input compatibility of this buffer?

The inputs are TTL-compatible, allowing them to interface directly with standard CMOS or TTL outputs without additional level shifting components.