TOSHIBA 262,144 WORD x 4 BIT SYNCHRONOUS STATIC R.
Toshiba
TC55BS4258J-10 - 256K x 4-Bit Synchronous Static RAM
TOSHIBA 262,144 WORD x 4 BIT SYNCHRONOUS STATIC RAM with Input Registers, Output Registers and Pass-Through Feature 1l:55BS4258]-10/12 PRELIMINARY .