OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS

DESCRIPTION

This octal buffer/driver is operational at 0.8V to 2.7V VCC, but

is designed specifically for 1.65V to 1.95V VCC operation.

The U74AUC244 is organized as two 4-bit line drivers with

separate output-enable ( OE ) inputs. When OE is low, the device

passes 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 pullup resistor; the

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

capability of the driver.

This device is fully specified for partial-power-down

applications using IOFF. The IOFF circuitry disables the outputs,

preventing damaging current backflow through the device when it

is powered down.

FEATURES

* Optimized for 1.8V Operation and is 3.6V I/O Tolerant to Support Mixed-Mode Signal Operation

* Partial-Power-Down Mode Operation

* Low Power Consumption, 20μA Max. ICC

* ±8mA Output Drive at 1.8V