DM54150W/883

Overview

The DM54150W/883B is a high-reliability, military-grade integrated circuit manufactured by National Semiconductor (now Texas Instruments). It functions as a 4-bit binary up-counter utilizing Low-power Schottky TTL (L-TTL) logic technology. The device is housed in a ceramic flatpack package with 14 pins, designed for operation in extreme environments. It supports asynchronous counting modes and operates within a wide temperature range of -55°C to +125°C. The component requires a 5V power supply and draws a maximum supply current of 5.5 mA. It achieves a maximum operating frequency of 6 MHz. This part is certified under the MIL-PRF-38534 standard (indicated by the /883B suffix), ensuring compliance with rigorous aerospace and defense specifications.

Feature Summary

• Military-grade reliability compliant with MIL-PRF-38534 standards
• Low-power Schottky TTL logic for reduced energy consumption
• Wide operational temperature range suitable for harsh environments
• Asynchronous 4-bit binary counting capability

Applications

• Aerospace and defense digital systems
• Military communication equipment
• High-reliability industrial control counters
• Spacecraft telemetry data processing

Procurement Notes

Verify the specific revision level and lot traceability documentation when sourcing this component. Ensure that the supplier provides full certification of compliance with MIL-PRF-38534 requirements. Confirm that the ceramic flatpack package integrity is intact, as thermal cycling performance depends on seal quality. Request detailed test reports if the application demands strict adherence to radiation hardness or extended life testing criteria defined in the original datasheet.

Selection Notes

Select this component when a robust, asynchronous 4-bit counter is required for L-TTL logic families in critical applications. It is appropriate for designs needing wide temperature tolerance and high noise immunity typical of Schottky technology. Consider this part over commercial equivalents if long-term availability and proven reliability in extreme conditions are primary constraints. Ensure system voltage levels align with standard 5V TTL operations.

Part Context

This component belongs to the SN54 series of logic integrated circuits, which are distinguished by their military-grade qualification compared to the commercial SN74 series. The DM prefix typically denotes a specific manufacturer code or variant within the National Semiconductor portfolio before its acquisition by Texas Instruments. The /883B suffix explicitly indicates qualification to the MIL-PRF-38534 specification, differentiating it from standard commercial or industrial grade parts.

Replacement Considerations

Direct replacements must match the SN54L93 functional equivalent. Verify pin compatibility with the 14-pin ceramic flatpack footprint. Ensure substitute components also meet the -55°C to +125°C temperature range and L-TTL electrical characteristics. Cross-reference with Texas Instruments' official obsolescence notices for legacy military logic parts.