NAPCO DD-494 Blank Prom Programmable Memory Chip Panels

( Brand: Napco ), ( Manufacturer Part Number: DD-494 ), ( Model: PANELS ), ( Type: Control Panels Keypads ), ( Country Of Origin: Dominican Republic )

Review NAPCO Dd494 Blank Prom Programmable Read only Memory Chip Assembly

The Napco DD-494, also known as the DD494, is a programmable read-only memory (PROM) chip manufactured by Napco Security Technologies, Inc. This chip is designed for use in security systems and other applications where custom programming is required.

The DD-494 is a mask-programmable PROM chip, which means that it can be programmed with a unique code using a specialized programming device. Once programmed, the chip becomes read-only, ensuring that the data stored on it cannot be altered. This feature makes the DD-494 an ideal choice for applications where security and reliability are paramount.

The DD-494 is available in a 14-pin dual-in-line package and can store up to 256 bytes of data. Each chip is individually serialized to facilitate easy tracking and identification. The chip operates on a 5V power supply and has a typical programming time of around 30 seconds.

The programming of the DD-494 is done using Napco's proprietary PROM programming device, such as the NP511 or NP513. These devices are available from Napco Security Technologies or authorized dealers. The programming process is straightforward and can be accomplished in a few simple steps.

The DD-494 is a versatile and reliable PROM chip that is widely used in various industries, including security, automotive, and industrial automation. Its programmability and read-only functionality make it an essential component in custom applications where data security is critical.

In summary, the Napco DD-494 is a mask-programmable PROM chip designed for use in security systems and other applications where custom programming is required. It operates on a 5V power supply and can store up to 256 bytes of data. The chip is individually serialized for easy tracking and identification and can be programmed using Napco's proprietary PROM programming devices. With its versatility, reliability, and security features, the DD-494 is an indispensable component in various industries.

Napco DD-494/DD494 Programmable ROMS: A Comprehensive Analysis

The Napco DD-494/DD494 is a type of programmable Read-Only Memory (PROM) chip. PROMs are a type of integrated circuit that can be programmed only once using special equipment. Here are some pros and cons associated with buying this specific chip.

1. Customizable: PROM chips like the Napco DD-494/DD494 offer the advantage of being customizable. Once programmed, the contents of the chip remain unchangeable, making it suitable for applications requiring a one-time programmable memory solution.

2. Cost-effective: Compared to other types of memory chips like EPROMs and EEPROMs, PROMs are generally less expensive since they do not require expensive erase/write equipment.

3. Durability: Once programmed, the data stored in a PROM chip remains stable and unaffected by power loss or external influences.

4. Wide Application: PROMs find extensive use in various industries, including automotive, telecommunications, military, and industrial automation, for storing custom application code or configuration data.

1. Single-use: The primary disadvantage of PROMs is their single-use nature. Once programmed, the chip cannot be erased and reprogrammed, making it unsuitable for applications requiring frequent updates to the stored data.

2. Programming Requirements: To program a PROM chip like the Napco DD-494/DD494, you need specialized equipment, which can be expensive and complex to operate. Additionally, programming a PROM requires a significant time investment and technical expertise.

3. Limited Capacity: The Napco DD-494/DD494 has a relatively small memory capacity of 256 bytes. This might not be sufficient for modern applications with larger code bases or more extensive configuration data.

The Napco DD-494/DD494 PROM chip is a suitable option for applications that require a one-time programmable memory solution and have limited capacity requirements. Its durability and cost-effectiveness make it an attractive choice for various industries, particularly those with specific programming needs. However, its single-use nature and the requirement for specialized programming equipment may limit its appeal for applications requiring frequent updates or larger memory capacities.

If you are looking for a PROM chip with a larger capacity or the ability to be erased and reprogrammed, consider exploring other types of programmable memory chips like EPROMs or EEPROMs. However, if your application requirements align with the capabilities of the Napco DD-494/DD494, it could be a valuable investment for your project.

Details:

Its a dirty mess but they are brand new and will work perfectly the black stuff has completely decayed.

part #: dd494 price

• $99.00

specifications contrpake:

• brand: Napco
• mpn: Dd-494
• model: Panels
• type: Control Panels Keypads
• country of origin: Dominican Republic

seller contrpake:

• # reviews: 4023
• city: Dover, New Jersey
• rating: 100.0%

shipping contrpake:

• carrier: UPS
• service: UPS Ground Saver
• transit: 4-11 Days
• cost: $5.00
• type: Fixed
• class: Economy

returns contrpake:

• policy: No Returns

payments contrpake:

• credit card: Diners-club
• wallet: Apple-pay
• other

general contrpake:

• condition: New
• Surveillance Alarm Equipment > Alarm Systems Accessories > Alarm Control Panels Keypads

offer contrpake:

• started: March 30, 2026
• options: Ship-to-home
• quantity: 5
• availability: In Stock
• sold: 0

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