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The MB81C84A-45 is a high-speed CMOS static RAM (SRAM) manufactured by Fujitsu. Below are the specifications, descriptions, and features based on factual data:

Specifications:

• Part Number: MB81C84A-45
• Manufacturer: Fujitsu
• Type: 8K x 8-bit CMOS Static RAM
• Speed: 45ns (Access Time)
• Operating Voltage: 5V ±10%
• Package: 28-pin DIP (Dual In-line Package)
• Operating Temperature Range: Commercial (0°C to +70°C) or Industrial (-40°C to +85°C)
• Power Consumption: Low standby current (typically 10μA in CMOS standby mode)
• I/O Compatibility: TTL-compatible inputs and outputs

Descriptions:

• The MB81C84A-45 is an 8K x 8-bit (64Kb) high-speed CMOS static RAM designed for applications requiring fast access times and low power consumption.
• It features a fully static operation, meaning no clock or refresh cycles are required for data retention.
• Suitable for battery-backed or power-sensitive applications due to its low standby current.

Features:

• High-Speed Access: 45ns access time for fast read/write operations.
• Low Power Consumption: CMOS technology ensures low active and standby current.
• Wide Operating Voltage: Supports 5V ±10% operation.
• TTL Compatibility: Inputs and outputs are TTL-compatible for easy interfacing.
• Fully Static Operation: No refresh cycles required.
• Three-State Outputs: Allows bus sharing in multi-device systems.

This information is based on the manufacturer's datasheet and technical documentation. For detailed electrical characteristics and pin configurations, refer to the official Fujitsu datasheet.