MX27C4100/27C4096 4M-BIT [512K x 8/256K x 16] CMOS.
MX27C4096 - (MX27C4100 / MX27C4096) 4M-BIT [512K x 8/256K x 16] CMOS EPROM
MX27C4100 - (MX27C4100 / MX27C4096) 4M-BIT [512K x 8/256K x 16] CMOS EPROM