U74AC244

DESCRIPTION 

The U74AC244 is a octal buffers/drivers with 3-state outputs. It is 

organized as two 4-bit buffers/drivers with separate output-enable 

( OE ) inputs. When OE is high, the Y outputs are in a 

high-impedance state, and the outputs neither load nor drive the bus 

lines. When OE is low, the device passes noninverted data from 

the A inputs to the Y outputs. 

The U74AC244 is designed to improve the performance and 

density of 3-state memory address drivers, clock drivers, and 

bus-oriented receivers and transmitters. 

To ensure the high-impedance state during power up or power 

down, OE should be tied to VCC through a pull-up resistor; the 

minimum value of the resistor is determined by the current-sinking 

capability of the driver. 

 FEATURES 

* Wide supply voltage range from 2V to 6V 

* Max tpd of 7 ns from A to Y at 5V 

* Low power consumption, ICC = 4 μA (Max.) at 5.5V 

* ±24 mA output driver at 5.5V