23A640T-I/SN 23A640T-I/ST 23K640T-E/SN 23K640T-I/SN 23K640T-I/ST 24CW640T-I/CS0668 24CW640T-I/CS1668 24CW640T-I/MUY 24CW640T-I/OT 24CW640T-I/Q4B 24CW640T-I/SN 24CW640T-I/ST 25AA640T-I/SN 25CS640T-H/SN 25CS640T-H/ST 25LC640T-E/SN 25LC640T-I/SN 25LC640T-I/SNG 48L640T-I/MNY 48L640T-I/SN AD640TD/883B BC640TA CD74FCT640TM MC8640THX1250HE MC8640TVJ1067NE MC8640TVJ1250HE MC8640TVU1067NE MC8640TVU1250HE MCP1640T-I/CHY MCP1640T-I/MC QS74FCT640TS0 23K256-E/P