BUY TC55257DF1-85L https://www.utsource.net/itm/p/1881877.html
STATIC RAM
The TC55257DF1-85L is a 256K-bit CMOS Static RAM organized as 32K words by 8 bits. It is fabricated using Toshiba's high-performance CMOS process and is available in a 28-pin SOP package. Features: * High-speed access time: 85ns * Low power dissipation: Active current: 55mA (max) * Standby current: 10μA (max) * Data retention current: 10μA (max) * Fully static operation * Single 5V ± 10% power supply * CMOS pin compatible with NMOS Applications: * Personal computers * Workstations * Notebook computers * Embedded systems * Telecommunications * Networking systems * Instrumentation * Industrial control systems (For reference only)