D4364C-15L 8-BIT Static CMOS RAM 28-Pin DIP

From the shop's description

Description The uPD4364 is a high-speed, 8192-word by 8-bit static RAM. Its unique circuitry, using CMOS peripheral circuits and N-channel memory cells with polysilicon resistors, makes the uPD4364 a very low-power device that requires no clock or refreshing to operate. Two chip enable pins are provided for battery backup application, and an output enable pin is provided for easy interface. Data retention is guaranteed at a power supply voltage as low as 2 V (-xxL and -xxLL versions). The uPD4364 is packaged in standard 28-pin Plastic DIP Features Single +5-volt power supply Fully static operation—no clock or refresh required TTL-compatible—all inputs and outputs Common 1/0 using three-state outputs One output enable and two chip enable pins for easy application Data retention voltage: 2 V min for -xxL and -xxLL versions Plug-in compatible with 2764-type EPROM Standard 28-pin plastic DIP UPD4364 Datasheet