BUY P5116SL-10 https://www.utsource.net/itm/p/9225125.html

Description: P5116SL-10 is an 8-bit static RAM from Intel. Features: Low power CMOS technology High speed access time of 10ns Low power dissipation TTL compatible inputs and outputs Fully static operation Single 5V power supply Automatic power down when deselected Low standby current High reliability Industrial temperature range Applications: Automotive Industrial Medical Networking Telecommunications Military (For reference only)