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PAL20X4NC from NS,National Semiconductor

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PAL20X4NC

Manufacturer: NS

Progammable Array Logic Series 24 (PAL Series 24)

Partnumber Manufacturer Quantity Availability
PAL20X4NC NS 61 In Stock

Description and Introduction

Progammable Array Logic Series 24 (PAL Series 24) The **PAL20X4NC** from **National Semiconductor (NS)** is a **Programmable Array Logic (PAL)** device designed for high-performance digital logic applications. As part of the **PAL** family, it offers a flexible and efficient solution for implementing custom combinational and sequential logic circuits.  

Featuring **20 inputs and 4 outputs**, the **PAL20X4NC** is built with a **fuse-programmable AND array** and a **fixed OR array**, allowing designers to create tailored logic functions. Its architecture supports both **combinational and registered outputs**, making it suitable for a variety of applications, including state machines, address decoding, and control logic.  

The device operates with **TTL-compatible** inputs and outputs, ensuring seamless integration with standard logic families. Its **high-speed performance** and **low power consumption** make it ideal for use in industrial, automotive, and communication systems where reliability and efficiency are critical.  

The **PAL20X4NC** is housed in a **DIP (Dual In-line Package)**, providing ease of use in prototyping and production environments. With its programmable nature, it reduces design complexity while offering a cost-effective alternative to custom ASICs.  

Engineers and designers continue to value the **PAL20X4NC** for its versatility, performance, and proven reliability in digital circuit design.

Application Scenarios & Design Considerations

Progammable Array Logic Series 24 (PAL Series 24)
Partnumber Manufacturer Quantity Availability
PAL20X4NC NS/MMI 78 In Stock

Description and Introduction

Progammable Array Logic Series 24 (PAL Series 24) **Introduction to the PAL20X4NC Programmable Array Logic (PAL) Device**  

The **PAL20X4NC** is a programmable array logic (PAL) device developed by **National Semiconductor (NS) and Monolithic Memories Inc. (MMI)**. As part of the PAL family, it provides a flexible solution for implementing custom combinational and sequential logic circuits. The device features a fixed OR-array and a programmable AND-array, allowing designers to create tailored logic functions efficiently.  

With **20 inputs and 4 outputs**, the PAL20X4NC is well-suited for medium-complexity digital designs, including state machines, address decoding, and control logic. Its architecture supports both registered and combinatorial output configurations, enhancing its versatility. The device operates on standard TTL voltage levels and is designed for reliable performance in industrial and commercial applications.  

Key features include **high-speed operation**, **low power consumption**, and **ease of programmability** using industry-standard development tools. The PAL20X4NC is housed in a durable **DIP (Dual In-line Package)**, ensuring compatibility with traditional through-hole PCB designs.  

As an early-generation programmable logic device, the PAL20X4NC played a significant role in simplifying digital circuit design before the advent of more advanced CPLDs and FPGAs. Its legacy continues to be relevant for educational purposes and legacy system maintenance.

Application Scenarios & Design Considerations

Progammable Array Logic Series 24 (PAL Series 24)

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