AT >> AT27C256R-45TU 
91318
AT27C256R-45TU
Atmel
Quantity 20000
Packaging IC OTP 256KBIT 45NS 28TSOP
Description original&Quality new original
554181
AT27C256R-45TU
Microchip Technology
Quantity 9000
Packaging IC OTP 256KBIT 45NS 28TSOP
Description original&Quality new original