MC74VHCT125ADTR2

Overview

The MC74VHCT125ADTR2G is a quad buffer and line driver from onsemi's VHCT logic family, housed in a 14-TSSOP package. It features four non-inverting outputs with three-state capability and independent low-active enable inputs. The device operates within a supply voltage range of 2.0 V to 5.5 V, ensuring compatibility with both 3.3 V and 5 V CMOS systems while accepting TTL-compatible inputs. Key electrical parameters include an output current of ±8 mA, a maximum propagation delay of 9 ns at 5 V, and a static current of 8 µA. It supports industrial temperature ranges from -55°C to +125°C.

Feature Summary

• Provides four independent non-inverting buffers with three-state outputs for bus-oriented applications
• Accepts TTL-compatible input levels while operating with standard CMOS supply voltages
• Features independent active-low output enable controls for each channel

Applications

• Memory address drivers in computer systems
• Clock signal distribution networks
• Bus-oriented architecture interfaces

Procurement Notes

Verify the complete part number suffix, as 'MC74VHCT125ADTR2' typically corresponds to 'MC74VHCT125ADTR2G' for RoHS-compliant tape-and-reel packaging. Confirm the specific manufacturer source document for exact pinout and electrical limits. Ensure the ordering code matches the required package style and environmental rating before finalizing procurement specifications.

Selection Notes

Select this component when interfacing between 3.3 V and 5 V domains requiring high noise immunity and TTL input compatibility. The VHCT series offers faster switching speeds than standard HC/HCT families. Verify that the load requirements do not exceed the ±8 mA output drive capability and that the system voltage remains within the 2.0 V to 5.5 V operational range.

Part Context

This device belongs to the MC74VHCT125A series, which integrates advanced silicon gate CMOS technology. It is designed to bridge the gap between traditional TTL logic levels and modern low-voltage CMOS environments. The TSSOP-14 package provides a compact solution for space-constrained printed circuit board designs requiring multiple buffered channels.

Replacement Considerations

Direct functional substitutes include MC74VHCT125ADT and MC74VHCT125AMTC. Cross-family replacements like MC74HC125 or MC74HCT125 may require voltage level adjustments due to different input threshold characteristics.