MC74AC125DTR2

Overview

The MC74AC125DTR2G 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 at 3.3 V and 7 ns maximum at 5.0 V with a 50 pF load. Quiescent supply current is typically 8 µA at 5.5 V.

Feature Summary

• Provides low-impedance buffering for digital signals with three-state output capability
• Features low enable input control for efficient bus management
• Constructed using silicon-gate CMOS technology for high-speed performance

Applications

• Bus-oriented transmissions
• Clock distribution circuits
• Memory module data buffering

Procurement Notes

Verify the complete part number includes the 'G' suffix (MC74AC125DTR2G) to confirm lead-free packaging compliance as per the datasheet ordering information. Confirm the package type matches the required TSSOP-14 form factor. Ensure the specific reel quantity aligns with manufacturing requirements. Cross-reference the manufacturer's latest documentation for any updates to mechanical dimensions or marking specifications before finalizing procurement orders.

Selection Notes

Select this component when a quad buffer with three-state outputs is required for 2V to 6V logic systems. The AC series offers higher speed compared to standard HC devices. Verify that the 24 mA drive current meets the load requirements. Consider the TSSOP-14 package if space constraints necessitate a smaller footprint than SOIC-14. Ensure input voltage levels match the system logic thresholds for reliable operation across the full temperature range.

Part Context

This device belongs to the MC74AC125 family of quad buffers. It shares functional similarities with the MC74ACT125, though the ACT variant features TTL-compatible input thresholds. The DTR2G suffix indicates a tape and reel packaging format in a TSSOP-14 case. It serves as a standard solution for signal conditioning and isolation in digital communication interfaces.

Replacement Considerations

MC74AC125DTR2G is a direct replacement for MC74AC125DR2G in tape and reel configurations. MC74AC125DG serves as the tube-packaged alternative in the SOIC-14 housing. For applications requiring TTL input compatibility, the MC74ACT125DTR2G provides equivalent functionality with adjusted input thresholds.