First, the Dual MCM packages have been upgraded to support our latest SMJ320C40 silicon revision, revision 5.x. Silicon revision 5.x will allow TI to work towards its roadmapped goal of 50MHz in the MCM packages. Second, Motorola SRAM will be used in our MCMs. However, their look and dimensions will change slightly. The following tables outline the changes for the MCM packages.
All dimensions are in inches.
The monolithic 'C40 dimensions have been included for your information, too. Dual MCM Package Differences. The part numbers for the new Taiwan MCMs changed. MCM Part Numbers. TI believes that by moving the manufacturing internal, TI can better control costs and reduce leadtimes.