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The TC5518CFL-20 is a static RAM (SRAM) chip manufactured by Toshiba (TOS). Below are the factual specifications, descriptions, and features:

Specifications:

• Memory Type: Static RAM (SRAM)
• Organization: 64K x 8 bits (524,288 bits)
• Supply Voltage: 5V ±10%
• Access Time: 20 ns (max)
• Operating Temperature Range: 0°C to +70°C
• Package Type: 28-pin PLCC (Plastic Leaded Chip Carrier)
• I/O Interface: Parallel
• Standby Current: 10 µA (typical)
• Operating Current: 50 mA (typical)
• Data Retention Voltage: 2V (min)
• Tri-State Outputs: Yes

Descriptions:

• The TC5518CFL-20 is a 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 is required.
• The chip is compatible with TTL levels and is suitable for battery-backed or low-power systems.

Features:

• High-Speed Access: 20 ns maximum access time.
• Low Power Consumption: CMOS technology ensures low standby and operating currents.
• Wide Voltage Range: Operates at 5V ±10%.
• TTL-Compatible Inputs/Outputs: Ensures easy interfacing with standard logic circuits.
• Data Retention Capability: Maintains data with a supply voltage as low as 2V.
• Tri-State Outputs: Allows bus sharing in multi-memory systems.
• Reliable Packaging: 28-pin PLCC for compact and robust mounting.

This information is strictly factual and based on the manufacturer's datasheet for the TC5518CFL-20.