MC74AC125N

Overview

The MC74AC125N is a quad 3-state buffer manufactured by onsemi, utilizing high-performance silicon-gate CMOS technology. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient operating temperature from -40°C to +85°C. The device features four non-inverting inputs and outputs capable of sourcing or sinking up to 24 mA. Propagation delays are specified at 9 ns maximum for 3.3 V operation and 7 ns maximum for 5.0 V operation, with output enable/disable times ranging from 7.0 ns to 11.5 ns depending on voltage conditions.

Feature Summary

• Quad 3-state buffering architecture with low-enable functionality
• High-current output capability supporting source and sink loads
• Silicon-gate CMOS construction ensuring low power consumption

Applications

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

Procurement Notes

Verify the specific package suffix against the datasheet ordering information to ensure correct physical dimensions and shipping quantities. Confirm that the procurement channel provides original manufacturer documentation to validate RoHS compliance and Pb-Free status. Cross-reference the marking diagram with the received component to verify assembly location and wafer lot details before integration into production.

Selection Notes

Select this component when designing circuits requiring multiple buffered signals with controllable tri-state outputs. Ensure the system logic levels align with the AC series input thresholds rather than the ACT series TTL requirements. Evaluate thermal dissipation capabilities based on the specific SOIC-14 or TSSOP-14 package selected, as power dissipation limits vary between case styles under still air conditions.

Part Context

This device belongs to the MC74AC125 family of logic integrated circuits produced by onsemi. It serves as a standard buffer solution within the broader 74AC logic portfolio, designed for general-purpose digital signal conditioning. The product line includes variants such as the MC74ACT125, which offers different input threshold characteristics for compatibility with specific legacy logic families.

Replacement Considerations

MC74AC125DG

FAQ

Does the MC74AC125N feature TTL-compatible inputs?

No, the MC74AC125N is part of the AC series and does not have TTL-compatible inputs. The MC74ACT125 variant is required for TTL-compatible input specifications.

What is the maximum quiescent supply current for this device?

The maximum quiescent supply current (ICC) is guaranteed to be 80 µA at 5.5 V with inputs at VCC or GND.