All of the following are from the Motorola Big Brown Book: ... 958 - Dual 2-input NAND Power gate 1800 - Dual 5-input NAND gate The following were obtained from a "direct replacement" chart: 9093 - Dual J-K flip flop (same as 953) 9099 - Dual J-K flip flop (same as 952) I can find a mention in an old catalog of this one, but have no additional information: 9034 - 256 bit ROM Cheers, Chuck