256 Bit 32x8 TTL Bipolar PROM Memory Matrix DIP16. Cross Reference: 1101000130 875974618 875978167 74S288 74S288N ECG74S288 DM74S288AN DM74LS288N DM74S288J HM7603 IM5610 N82S123 SN74S288 SN74S288AN SN74S288N TBP18S030 TBP18S030N.