UMC UM2149
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. The three-state output facilitates memory expansion by allowing the outputs to be OR-tied to otherFEATURES
● 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 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.