GR >> AT27LV520-90SI 
89553
AT27LV520-90SI
Atmel
Quantity 20000
Packaging IC OTP 512KBIT 90NS 20SOIC
Description original&Quality new original
554462
AT27LV520-90SI
Microchip Technology
Quantity 9000
Packaging IC OTP 512KBIT 90NS 20SOIC
Description original&Quality new original