MC74ACT125DTR2G

Overview

The MC74ACT125DTR2G is a quad 3-state buffer manufactured by onsemi in the 74ACT logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs. The device provides four non-inverting buffers with low-enable control, housed in a TSSOP-14 package. Key electrical parameters include a maximum propagation delay of 10 ns at 5.0 V with a 50 pF load, output currents of ±24 mA, and a maximum quiescent supply current of 80 µA.

Feature Summary

• Features TTL-compatible inputs for direct interfacing with TTL logic systems
• Provides four independent non-inverting buffers with low-active enable controls
• Outputs are capable of sourcing and sinking significant drive currents

Applications

• High-performance bus-oriented architectures requiring signal buffering
• Clock distribution circuits utilizing low-enable control
• Memory data register applications involving 3-state line driving

Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the datasheet lists multiple variants including SOIC-14 and TSSOP-14. Confirm the device code corresponds to the ACT logic family rather than the AC family. Ensure the component meets lead-free packaging requirements if specified by the design constraints.

Selection Notes

Select this component when TTL input compatibility is required alongside high-speed CMOS performance. The 74ACT series offers faster switching speeds compared to standard HC or HCT families while maintaining compatible input thresholds. Verify that the operating temperature range of -40°C to +85°C aligns with the environmental conditions of the target application.

Part Context

This part belongs to the MC74AC(T)125 family of quad buffers. The 'T' designation indicates the ACT variant, which ensures compatibility with TTL logic levels unlike the standard AC version. The DTR2G suffix specifies the surface-mount TSSOP-14 package configuration.

Replacement Considerations

MC74ACT125DR2G (SOIC-14 package)

FAQ

What is the input logic level compatibility of the MC74ACT125?

The MC74ACT125 features TTL-compatible inputs, allowing it to interface directly with TTL logic outputs.

How does the enable function operate?

The device utilizes a low-enable input; the outputs are active when the enable pin is low and enter a high-impedance state when the enable pin is high.