SCLS226K October 1995 – July 2014 SN54AHC244 , SN74AHC244
PRODUCTION DATA.
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The SNx4AHC244 devices are organized as two 4-bit buffers/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.
INPUTS | OUTPUT Y |
|
---|---|---|
OE | A | |
L | H | H |
L | L | L |
H | X | Z |