74HCT125DB,112

Overview

The Nexperia 74HCT125DB,112 is a quad buffer and line driver featuring three-state outputs controlled by active-low output enable inputs. It operates within a supply voltage range of 4.5 V to 5.5 V and accepts TTL-level input signals. The device provides four non-inverting buffers with independent control lines. It utilizes an SO14 plastic small outline package (SOT108-1) with a body width of 3.9 mm. The component supports an ambient operating temperature from -40 °C to +125 °C.

Feature Summary

• Features four independent non-inverting buffers with dedicated active-low output enable controls for precise signal management.
• Accepts TTL logic level inputs while providing CMOS-compatible outputs suitable for mixed-voltage system interfaces.
• Includes input clamp diodes to facilitate safe interfacing with voltages exceeding the supply rail using current limiting resistors.

Applications

• Memory address and data bus buffering in digital systems
• Clock distribution networks requiring high noise immunity
• Driving transmission lines or capacitive loads in industrial control equipment

Procurement Notes

Verify the specific ordering suffix '112' against the manufacturer's current production status, as availability may vary. Confirm that the SO14 package variant matches the required PCB footprint dimensions. Ensure the TTL input compatibility aligns with the source logic family in the target design before finalizing procurement orders.

Selection Notes

Select this component when TTL input thresholds are required alongside CMOS output drive capabilities. The wide operating temperature range makes it suitable for harsh industrial environments. Verify that the package type meets the spatial constraints of the printed circuit board layout.

Part Context

This part belongs to the 74HCT series of high-speed CMOS logic devices manufactured by Nexperia. The series is designed to bridge the gap between older TTL logic standards and modern CMOS technology. The 74HCT125 specifically addresses applications needing buffered signals with defined logic levels.

Replacement Considerations

The 74HCT125D is a direct functional equivalent within the same product family. Verify pinout compatibility and package dimensions when substituting components to ensure proper integration into existing designs.