74HCT125D/AUJ

Overview

The Nexperia 74HCT125D/AUJ is a quad buffer and line driver featuring three-state outputs, manufactured in an SOIC-14 package. It operates within a supply voltage range of 4.5 V to 5.5 V. The device provides four non-inverting buffers with active LOW output enable inputs (nOE). When nOE is HIGH, the outputs enter a high-impedance OFF-state. Inputs include clamp diodes for interfacing with voltages exceeding VCC. The component complies with JEDEC standards JESD8C and JESD7A, ensuring compatibility with TTL logic levels.

Feature Summary

• Quad buffer/line driver configuration with three-state outputs controlled by active LOW enable inputs
• CMOS technology providing low power dissipation and high noise immunity
• Inputs equipped with clamp diodes to allow current limiting resistors for interfacing above VCC
• ESD protection exceeding 2000 V per Human Body Model and 1000 V per Charged Device Model

Applications

• Bus-oriented transmissions
• Clock buffering and distribution
• Memory module data line drivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range specifications. Ensure that the procurement channel sources products directly from authorized distributors or the manufacturer to guarantee authenticity and traceability. Cross-reference the part number with the latest product data sheet revision to confirm compliance with current JEDEC standards and RoHS directives before finalizing orders.

Selection Notes

Select this component when designing circuits requiring four independent non-inverting buffers with tri-state capability on a single integrated circuit. The HCT logic family ensures direct compatibility with standard TTL input levels while utilizing CMOS performance characteristics. Consider the SOIC-14 package dimensions for PCB layout constraints and verify that the operating temperature range meets the environmental requirements of the target application system.

Part Context

This component belongs to the 74HCT125 series of quad buffer and line drivers produced by Nexperia. It is part of the broader 74HC/HCT logic family, designed for general-purpose digital applications. The device serves as a fundamental building block for signal conditioning and bus driving in electronic systems requiring isolated control over multiple data lines simultaneously.

Replacement Considerations

Compatible substitutes include the 74AHCT125D,118 and 74VHC125D. Verify pinout compatibility and electrical parameter alignment with the original datasheet before implementation.