DM74ALS125N

Overview

The DM74ALS125N is a quad buffer and line driver manufactured by Fairchild Semiconductor. It features four independent non-inverting buffers with three-state outputs, housed in a 14-pin DIP package. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from 0°C to 70°C. It utilizes the Advanced Low-Power Schottky (ALS) TTL process for improved performance over standard LS counterparts.

Feature Summary

• Contains four independent non-inverting buffers configured as three-state drivers
• Utilizes Advanced Low-Power Schottky (ALS) technology for enhanced AC performance
• Functionally and pin-for-pin compatible with Schottky and Low-Power Schottky TTL devices

Applications

• Memory systems requiring bus isolation
• Microprocessor data buses
• Asynchronous bidirectional data transmission

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific manufacturing date codes against current datasheet revisions. Ensure proper handling procedures are followed due to the legacy nature of the ALS logic family.

Selection Notes

Select this component when high-speed switching characteristics are required alongside low power consumption in TTL environments. It serves as a suitable replacement for older Schottky TTL buffers where speed is critical but power dissipation must be minimized compared to standard LS logic families.

Part Context

This part belongs to the DM74ALS series, representing Fairchild's implementation of Advanced Low-Power Schottky logic. This family bridges the gap between standard LS and full Schottky speeds while maintaining lower power usage than pure Schottky devices, widely used in industrial and computing applications during the late 20th century.

Replacement Considerations

Direct substitutes include SN74ALS125N from Texas Instruments. Verify pin compatibility and electrical specifications before substitution.