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The 93S47PC is a Programmable Read-Only Memory (PROM) chip manufactured by Fairchild Semiconductor (FAI). Below are its specifications, descriptions, and features based on available data:

Manufacturer:

• Fairchild Semiconductor (FAI)

Specifications:

• Type: PROM (Programmable Read-Only Memory)
• Memory Size: 512 x 8 (4K-bit)
• Organization: 512 words × 8 bits
• Access Time: Typically 45 ns (varies by variant)
• Supply Voltage: +5V DC (standard TTL levels)
• Package Type: 24-pin DIP (Dual In-line Package)
• Technology: Bipolar (TTL-compatible)
• Programming: One-time programmable (OTP) via external programmer

Descriptions:

• The 93S47PC is a high-speed, low-power bipolar PROM designed for microprogramming and firmware storage.
• It is commonly used in early computing systems, industrial controls, and embedded applications.
• Data is permanently written (fused) during programming and cannot be erased.

Features:

• High-Speed Operation: Fast access time (45 ns typical).
• TTL-Compatible: Direct interface with standard TTL logic.
• Low Power Consumption: Optimized for power efficiency.
• One-Time Programmable (OTP): Non-volatile storage after programming.
• Wide Temperature Range: Operates reliably in industrial environments.

This information is based on historical Fairchild Semiconductor documentation. For exact details, refer to the original datasheet if available.