Part Number	TC55B4257J-12
Description	256K x 4-Bit BiCMOS Static RAM
Info	TOSHIBA 1l:55B4257J-12/15/20 SILICON GATE BiCMOS.
Manufacture	Toshiba
for PC	Download TC55B4257J-12 Datasheet

Part Number	TC55B4257J-15
Description	256K x 4-Bit BiCMOS Static RAM
Info	TOSHIBA 1l:55B4257J-12/15/20 SILICON GATE BiCMOS.
Manufacture	Toshiba
for PC	Download TC55B4257J-15 Datasheet

Part Number	TC55B4257J-20
Description	256K x 4-Bit BiCMOS Static RAM
Info	TOSHIBA 1l:55B4257J-12/15/20 SILICON GATE BiCMOS.
Manufacture	Toshiba
for PC	Download TC55B4257J-20 Datasheet