DM54LS125AW/883

Overview

The DM54LS125AW/883 is a high-performance low-power Schottky (LS) quad bus driver manufactured by National Semiconductor. It features four independent 1-to-4 bit drivers with separate output enable controls and high-impedance states. The device utilizes a CDFP16 ceramic flatpack package, designed for MIL-STD-883 compliance. It operates within a temperature range of -55°C to 125°C and supports standard TTL logic levels, providing reliable signal buffering and isolation in demanding environments.

Feature Summary

• Provides four independent bidirectional bus drivers with dedicated output enable inputs
• Features high-impedance state capability for effective bus isolation and line driving
• Constructed with low-power Schottky technology to minimize power consumption while maintaining speed
• Encapsulated in a hermetically sealed ceramic flatpack suitable for harsh operational conditions

Applications

• Military and aerospace data bus systems requiring MIL-STD-883 qualification
• High-reliability computer memory buffer circuits
• Industrial control system signal routing and isolation
• Telecommunications equipment requiring robust logic level translation

Procurement Notes

Verify the specific suffix AW/883 against the manufacturer's current datasheet to confirm package dimensions and pinout compatibility. Ensure the component meets the required MIL-STD-883 screening level for your application. Cross-reference the National Semiconductor part number with Texas Instruments documentation, as TI acquired NS. Confirm that the ceramic flatpack form factor matches your PCB footprint requirements before procurement.

Selection Notes

Select this component when a quad bus driver with individual enable controls is required for LS-TTL interfaces. It is appropriate for designs needing high noise immunity and low power dissipation in wide temperature ranges. Consider the CDFP16 package constraints during layout. Compare against similar LS series drivers if pin-compatible alternatives are needed for supply chain resilience.

Part Context

This part belongs to the DM54LS series, which denotes military-grade low-power Schottky TTL logic. The '54' prefix indicates military temperature and reliability standards, distinguishing it from commercial '74' series parts. National Semiconductor produced this line before its acquisition by Texas Instruments, making original NS markings relevant for legacy system maintenance.

Replacement Considerations

Check for direct equivalents such as the DM54LS125J or other manufacturers' MIL-spec LS quad bus drivers. Verify that any substitute maintains the same output enable logic polarity and high-impedance characteristics. Ensure the replacement package is compatible with existing mounting hardware.