Found 9 alternatives for STK12C68-PF55 by Rochester Electronics, LLC. Memory — 28-DIP (0.300", 7.62mm).
IC FRAM 256KBIT PARALLEL 28DIP
STANDARD SRAM, 32KX8, 35NS
IC SRAM 256KBIT PARALLEL 28DIP
STANDARD SRAM, 32KX8, 20NS
IC SRAM 256KBIT PARALLEL 28DIP
IC SRAM 64KBIT PARALLEL 28DIP
7164L - STATIC RAM 64K (8K X 8-B
IC SRAM 64KBIT PARALLEL 28DIP
IC SRAM 256KBIT PARALLEL 28DIP