DM74S244N

Overview

The DM74S244N is an octal bus driver manufactured by Fairchild Semiconductor, utilizing Schottky TTL technology. It features eight non-inverting buffers with three-state outputs organized into two groups of four, each controlled by a separate active-low output enable input. The device operates within a supply voltage range of 4.5V to 5.5V and is housed in a standard 20-pin DIP package.

Feature Summary

• Provides high-speed data buffering for memory-address drivers and bus-oriented transmitters
• Features low-impedance outputs capable of driving terminated transmission lines down to 133 ohms
• Maintains high-impedance inputs to prevent significant loading on the transmission line

Applications

• Memory systems
• Microprocessor systems
• Communication systems

Procurement Notes

Verify the specific manufacturer origin, as Fairchild Semiconductor's logic division was acquired by onsemi. Confirm that the component matches the original Fairchild specifications rather than subsequent production runs. Ensure the package type corresponds to the required footprint and pin configuration for the target application.

Selection Notes

Select this component when high-speed switching performance is required alongside low power dissipation relative to standard TTL. It serves as a functional replacement for older Schottky counterparts while maintaining pin compatibility. Consider the bidirectional or unidirectional buffer requirements based on the specific system architecture needs.

Part Context

This part belongs to the Advance Schottky (AS) family of logic circuits designed for advanced digital applications. It complements other devices like the DM74AS240 and DM74ALS244 within the same ecosystem, offering optimized switching characteristics suitable for demanding interface tasks in complex electronic designs.

Replacement Considerations

The DM74LS241N is a documented similar part number from Fairchild Semiconductor. Verify electrical parameter compatibility before substitution.