DM74LS125AM

Overview

The DM74LS125AM is a quad 3-state buffer manufactured by onsemi, housed in a 14-lead Small Outline Integrated Circuit (SOIC) package. It operates within a supply voltage range of 4.75V to 5.25V and supports an operating temperature of 0°C to +70°C. The device features four independent non-inverting gates with high drive capability, allowing direct bus line driving without external resistors. Key electrical parameters include a maximum propagation delay of 22ns at 50pF load and output currents of -2.6mA (high) and 24mA (low).

Feature Summary

• Contains four independent non-inverting buffer gates.
• Outputs exhibit low impedance characteristics when enabled for direct bus driving.
• High-impedance state presented when disabled to prevent bus loading.
• Disable time is shorter than enable time to minimize bus contention.

Applications

• Driving bus lines without external resistors.
• General-purpose buffering in digital logic circuits.
• System applications requiring controlled signal isolation.

Procurement Notes

Verify the specific ordering code suffix against current manufacturer documentation to confirm package type and tape/reel availability. Confirm RoHS compliance status as historical data may vary. Ensure the component meets the required operating temperature range and voltage specifications for the target application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring quad non-inverting buffers with 3-state control. The SOIC package offers a compact surface-mount solution compared to DIP alternatives. Consider the propagation delay and drive current capabilities relative to the system's timing requirements and bus loading conditions.

Part Context

This part belongs to the 74LS series of logic integrated circuits, specifically designed for Low-power Schottky TTL applications. The 'M' suffix denotes the 14-lead SOIC package variant. It serves as a standard interface component for managing signal flow in digital systems where tri-state control is necessary.

Replacement Considerations

Direct substitutes include SN74LS125AN from Texas Instruments. Verify pinout compatibility and electrical characteristics match the original design requirements when considering alternative manufacturers or packages.