100145DCQR

Overview

The National Semiconductor 100145DCQR is a high-speed ECL100 series shift register file. It integrates a 16x4 static RAM array within a single component, providing efficient data storage and shifting capabilities for logic applications. The device utilizes emitter-coupled logic technology to ensure rapid switching speeds and low propagation delays, making it suitable for demanding digital systems requiring reliable memory management and signal processing functions.

Feature Summary

• Integrates a 16x4 SRAM array for combined storage and shifting operations
• Utilizes ECL100 technology for high-speed performance
• Designed as a dedicated shift register file element

Applications

• High-speed digital signal processing circuits
• Data buffering in communication systems
• Logic control units requiring fast memory access

Procurement Notes

Verify the manufacturer designation as National Semiconductor, noting its historical status. Confirm the package type matches the 24-CDIP specification with a 0.600-inch width. Ensure the part number suffix DCQR aligns with the required temperature range and quality grade. Cross-reference the description as an ECL100 16x4 SRAM to confirm functional compatibility with existing system designs before procurement.

Selection Notes

Select this component when a compact solution for both shifting and temporary storage is required in high-speed environments. The ECL100 family offers superior speed compared to standard TTL or CMOS alternatives. Consider the 24-CDIP package for through-hole mounting requirements. Evaluate system power consumption constraints, as ECL devices typically draw higher current than other logic families while providing faster operation.

Part Context

This component belongs to the National Semiconductor ECL100 series, a line of high-speed emitter-coupled logic devices. The series was designed for applications demanding minimal propagation delay and high fan-out capabilities. As a shift register file, it combines the functionality of a shift register with embedded static RAM, streamlining circuit design by reducing the component count needed for complex data handling tasks.

Replacement Considerations

Direct substitutes may include other ECL100 series shift registers from National Semiconductor or equivalent high-speed ECL parts from manufacturers like Texas Instruments. Verify pin compatibility and electrical characteristics such as supply voltage and current draw. Ensure the replacement supports the same 16x4 memory depth and CDIP packaging if physical constraints are critical.