UM2149

(l)UMC UM2149 1K·· X 4 High Speed NMOS SRAM Features 45 ns maximum address access Fully static operation: No clocks or strobes required Fast chip select access time: 20ns max. Identical cycle and access times Single +5V supply Industry standard 2114 pinout Totally TTL compatible: All inputs and outputs Common data input and outputs Ii High density 18-pin package Three-state output General Description The UMC UM2149 is a 4096-8it Static Random Access Memory organized 1024 words by 4 bits and is fabricated using UMC's new N-channel Silicon-Gate HMOS technology. It is designed using fully static circuitry, therefore requiring no clock or refreshing to operate. Address set-up times are not required and the data is read out non-destructively with the same polarity as the input data. Common data input and output pins provide maximum design flexibility. The three-state output facilitates memory expansion by allowing the outputs to be OR-tied to other ...