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EEPROM - Parallel - 256Kbit (32K x 8) - 5V - Mil Std 883 - 28-Pin CFPAK - Tube
This part may be known by these alternate part numbers:
Descriptions of Microchip AT28C256F-15FM/883 provided by its distributors.
150NS, FLATPACK, 883C; LEV B COMPLIANT
Microchip