Description
Texas Instruments SN74AS244N IC Bus Driver/Transceivers , dual 4-bit driver, true output, pdip20
These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmit- ters. Taken together with the ’ALS240A, ’ALS241A, ’AS240, and ’AS241, these devices provide the choice of selected combinations of inverting outputs, symmetrical G (active-low input control) inputs, and complementary G and G inputs.
These devices can be used to upgrade the performance of most systems utilizing the SN74ALS180 and SN74AS180 parity generators/checkers. Although the SN74ALS280 and SN74AS280 are implemented without expander inputs, the corresponding function is provided by the availability of an input (I) at terminal 4 and the absence of any internal connection at terminal 3. This permits the SN74ALS280 and to be substituted for the SN74ALS180 and SN74AS180 in existing designs to produce an identical function even if the devices are mixed with existing SN74ALS180 and SN74AS180 devices. All SN74AS280 inputs are buffered to lower the drive requirements. The SN74ALS280 and SN74AS280 are characterized for operation from to 70°C.
Manufacturer Part Number: 74AS244N
Texas Instruments
