256Kb Parallel RAM, 35ns Access Time, 5V 50mA, Through Hole
EPROM UV 256K-Bit 32K x 8 55ns 32-Pin PLCC
256Kb Parallel RAM, 45ns Access Time, 5V 50mA, Through Hole
EPROM OTP 256K-bit 32K x 8 55ns 28-Pin PDIP