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NMC27C512AQ150 from NSC,National Semiconductor

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NMC27C512AQ150

Manufacturer: NSC

150 ns, Vcc=5V+/-10%, 524,288-bit (64k x 8) UV erasable CMOS PROM

Partnumber Manufacturer Quantity Availability
NMC27C512AQ150 NSC 200 In Stock

Description and Introduction

150 ns, Vcc=5V+/-10%, 524,288-bit (64k x 8) UV erasable CMOS PROM # Introduction to the NMC27C512AQ150 EPROM  

The **NMC27C512AQ150** is a high-performance **EPROM (Erasable Programmable Read-Only Memory)** chip designed for applications requiring non-volatile data storage. With a capacity of **512 kilobits (64K x 8 bits)**, it provides reliable memory retention for embedded systems, industrial controls, and legacy computing applications.  

This component features a **150ns access time**, ensuring efficient data retrieval in time-sensitive operations. It operates on a **single 5V power supply**, making it compatible with standard TTL logic levels. The NMC27C512AQ150 supports **ultraviolet (UV) light erasure**, allowing for multiple reprogramming cycles when exposed to UV light for approximately 20 minutes.  

Key characteristics include:  
- **64KB memory organization**  
- **Low power consumption** in standby mode  
- **Tri-state outputs** for bus compatibility  
- **JEDEC-approved pinout** for industry-standard integration  

The NMC27C512AQ150 is housed in a **ceramic or plastic DIP (Dual In-line Package)**, ensuring durability in various environments. While largely succeeded by modern flash memory, this EPROM remains relevant in legacy systems requiring stable, long-term data storage.  

Engineers and developers working with older hardware or specialized firmware may find the NMC27C512AQ150 a dependable solution for non-volatile memory needs.

Application Scenarios & Design Considerations

150 ns, Vcc=5V+/-10%, 524,288-bit (64k x 8) UV erasable CMOS PROM

Alternative Part Number

  • M27C512-15F1 --: 512Kbit (64K x 8) UV EPROM with 150 ns access time, pin-compatible DIP-28 replacement for the NMC27C512AQ150.
  • AM27C512-150DC --: Equivalent 512Kbit CMOS EPROM with 150 ns speed grade in a 28-pin DIP package, widely used as a drop-in substitute.
  • TMS27C512-15JL --: 512Kbit UV-erasable EPROM rated at 150 ns, functionally and pin-compatible with the original NSC device.

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