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PAL16R8ANC from NS,National Semiconductor

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PAL16R8ANC

Manufacturer: NS, NSC

Progammable Array Logic Series 24 (PAL Series 24)

Partnumber Manufacturer Quantity Availability
PAL16R8ANC NS, NSC 234 In Stock

Description and Introduction

Progammable Array Logic Series 24 (PAL Series 24) The **PAL16R8ANC** from **National Semiconductor Corporation (NSC)** 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 **16 inputs and 8 registered outputs**, the PAL16R8ANC is built with a programmable AND array and a fixed OR array, allowing designers to create tailored logic functions. Its registered outputs include flip-flops, making it suitable for state machine designs and synchronous systems.  

Key characteristics include **TTL compatibility**, **low power consumption**, and **high-speed operation**, ensuring reliable performance in various digital systems. The device is housed in a **20-pin DIP (Dual In-line Package)**, providing ease of integration into existing circuit designs.  

The PAL16R8ANC is widely used in applications such as **control logic, address decoding, and data routing**, where custom logic functions are required without the complexity of full-custom ASICs. Its reprogrammability (via fusible links) offers design flexibility, though it is a one-time programmable (OTP) device.  

Engineers value the PAL16R8ANC for its **simplicity, reliability, and cost-effectiveness** in replacing discrete logic components. While newer CPLDs and FPGAs have since emerged, this PAL device remains a practical choice for legacy systems and straightforward logic implementations.

Application Scenarios & Design Considerations

Progammable Array Logic Series 24 (PAL Series 24)

Alternative Part Number

  • TIBPAL16R8-25CN --: Direct functional equivalent of the PAL16R8 in a 20-pin DIP package, with the same 8 registered outputs and 16 inputs; TI is the main second source for these classic PAL devices.
  • ATF16V8C-7PU --: Modern CMOS SPLD that is pin-compatible and can be programmed to emulate the PAL16R8AN architecture, offering lower power and a readily available replacement path.
  • GAL16V8D-25LP --: Generic array logic device that is a well-known drop-in replacement for 16R8 PALs, electrically erasable and reprogrammable, widely stocked as a legacy PAL substitute.
  • TIBPAL16R8-25CN --: TI second-source PAL16R8 device in the same 20-pin DIP package with compatible 16R8 architecture and 25 ns speed, a direct functional replacement for the NSC part.
  • TIBPAL16R8-15CN --: Same TI PAL16R8 family in a 20-pin DIP but with faster 15 ns propagation delay, offering improved timing margin while remaining pin and function compatible.
  • PAL16R8BCN --: AMD bipolar PAL16R8 in a 20-pin DIP with the same 16R8 registered output architecture, a widely available alternate source for the NSC device.

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