U74ACT240

DESCRIPTION

The U74ACT240 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 OEis high, the Y outputs are in a 

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

lines. When OEis low, the device passes inverted data from the a

inputs to the Y outputs.

The U74ACT240 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

* 4.5V to 5.5V VCC operation

* Inputs accept voltages to 5.5V

* Max tpd of 8.5 ns from A to Y at 5V

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

* TTL compatible

* ±24 mA output driver at 5.5V