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The CY7C166-25PC is a high-speed CMOS static RAM (SRAM) manufactured by Cypress Semiconductor. Below are the key specifications, descriptions, and features:

Specifications:

• Part Number: CY7C166-25PC
• Manufacturer: Cypress Semiconductor (now part of Infineon Technologies)
• Type: 16K x 16-bit (262,144-bit) Static RAM
• Speed: 25ns access time
• Voltage Supply: 5V ±10%
• Operating Current: 120mA (typical)
• Standby Current: 30mA (typical)
• Package: 48-pin Plastic DIP (Dual In-line Package)
• Operating Temperature Range: Commercial (0°C to +70°C)
• I/O Type: TTL-compatible

Descriptions:

• The CY7C166-25PC is a low-power, high-performance static RAM designed for applications requiring fast access times.
• It features a fully static operation, eliminating the need for external refresh circuitry.
• The device is organized as 16K words of 16 bits each, making it suitable for memory-intensive applications.
• It is compatible with 5V TTL logic levels and offers three-state outputs for bus-oriented systems.

Features:

• High-Speed Performance: 25ns access time.
• Low Power Consumption:
• Active current: 120mA (typical)
• Standby current: 30mA (typical)
• Fully Static Operation: No clock or refresh required.
• TTL-Compatible Inputs/Outputs: Ensures easy interfacing with standard logic circuits.
• Three-State Outputs: Supports bus sharing in multi-memory systems.
• Wide Operating Voltage: 4.5V to 5.5V.
• Industrial-Standard Pinout: Compatible with similar SRAM devices.

This SRAM is commonly used in embedded systems, networking equipment, industrial controls, and telecommunications where fast, reliable memory access is required.

*(Note: For detailed electrical characteristics and timing diagrams, refer to the official datasheet from Cypress/Infineon.)*