SN74AC244DW (TEXAS INSTRUMENTS)

The SN74AC244DW is an octal Buffer and Line Driver designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers and bus-oriented receivers and transmitters. The SN74AC244 devices are organized as two 4-bit buffers/drivers with separate output-enable (OE)inputs. When OE is low, the device passes non-inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor and the minimum value of the resistor is determined by the current-sinking capability of the driver.