64-Bit 3-STATE Random Access Read/Write Memory

The MM74C89 is a 16-word by 4-bit random access read/ write memory. Inputs to the memory consist of four address lines, four data input lines, a write enable line and a mem- ory enable line. The four binary address inputs are decoded internally to select each of the 16 possible word locations. An internal address Register Latches the address information on the positive to negative transition of the memory enable input. The four 3-STATE data output lines working in conjunction with the memory enable input pro- vide for easy memory expansion. Address Operation: Address inputs must be stable tSA prior to the positive to negative transition of memory enable. It is thus not necessary to hold address information stable for more than tHA after the memory is enabled (posi- tive to negative transition of memory enable). Write Operation: Information present at the data inputs is written into the memory at the selected address by bringing write enable and memory enable LOW. By Fairchild Semiconductor
MM74C89 's PackagesMM74C89 's pdf datasheet
MM74C89N




MM74C89 Pinout, Pinouts
MM74C89 pinout,Pin out
This is one package pinout of MM74C89,If you need more pinouts please download MM74C89's pdf datasheet.

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