CY7C263-55WMB Datasheet and CY7C263-55WMB manual

Manufacturer : Cypress 

Packing : CERDIP 

Pins : 24 

Temperature : Min -55 °C | Max 125 °C

Size : 272 KB

Application : "8K x 8 power-switched and reprogrammable PROM, 55ns" 

CY7C263-55WMB PDF Download