TC55B4257J-12 ram equivalent, 256k x 4-bit bicmos static ram.
low power dissipation when the device is deselected using chip enable (CE), and has an output enable input (OE) for fast memory access.
The TC55B4257J is suitable for use.
where high speed is required such as cache memory, high speed storage, and main memory. All inputs and outputs are TIL c.
The TC55B4257J is a 1,048,576 bit high speed BiCMOS static random access memory organized as 262,144 words by 4 bits and operated from a single 5V supply. Toshiba's BiCMOS technology and advanced circuit design enable high speed operation.
The TC55B4.
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