HIGH-SPEED 2.5V 512/256/128K X 18 IDT70T3339/19/9.
IDT70T3399 - HIGH-SPEED 2.5V 512/256/128K x 18 SYNCHRONOUS DUAL-PORT STATIC RAM
IDT70T3399S - HIGH-SPEED 2.5V 512/256/128K x 18 SYNCHRONOUS DUAL-PORT STATIC RAM