BUY V53C104HP45 https://www.utsource.net/itm/p/213590.html
Fast Page DRAM, 256KX4, 45ns, CMOS, PDIP20, 0.300 INCH, PLASTIC, DIP-20
Description: V53C104HP45 is a 4Mbit (512K x 8) CMOS Static RAM. Features: - Low power consumption: Active current: 70mA (max) - Standby current: 10mA (max) - Access time: 45ns (max) - Operating voltage: 2.7V to 3.6V - Data retention voltage: 1.2V (min) - Package: DIP-20P Applications: V53C104HP45 is suitable for applications such as embedded systems, industrial control, instrumentation, consumer electronics, and automotive. (For reference only)