ZHCSWS7L October 1995 – July 2024 SN54AHC244 , SN74AHC244
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
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.