The MSM514400A-70SJ is a 4,194,304-bit Dynamic RAM (DRAM) organized as 4M x 1 bit, manufactured by OKI. The '-70' designation indicates a 70ns access time. This DRAM is suitable for applications requiring a moderate access speed and a large memory capacity.

Applications

• Embedded systems
• Data storage in industrial equipment
• Memory for simple graphic displays
• Buffer memory in communication devices
• Applications requiring moderate-speed memory

Features

• Organization: 4,194,304 bits (4M x 1)
• Access Time: 70ns
• Power Supply Voltage: 5V
• Package: SOJ (Small Outline J-lead)
• Refresh: Standard DRAM refresh requirements
• Input/Output: TTL compatible

Benefits

• High Capacity: 4Mbit storage allows for storing a significant amount of data.
• Reasonable Access Time: 70ns access time is sufficient for many applications.
• Compact Size: SOJ package helps minimize board space.
• TTL Compatibility: Simplifies interfacing with other digital components.
• Cost-Effective: Offers a good balance of performance and cost.

Additional Details

The MSM514400A-70SJ operates on a 5V power supply and requires periodic refresh cycles to maintain data. Decoupling capacitors should be used near the power pins to minimize noise. The datasheet should be consulted for detailed timing and operating characteristics. Proper ESD precautions should be taken when handling the device.

This DRAM offers a suitable solution for embedded systems and other applications where a large amount of memory is needed at a reasonable speed. Its standard DRAM characteristics make it relatively easy to integrate into existing designs.