SCAS976 March 2024 SN74AHC240-Q1
ADVANCE INFORMATION
Refer to the PDF data sheet for device specific package drawings
The SN74AHC240-Q1 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 place the device in the high-impedance state during power up or power down, tie OE to VCC through a pullup resistor; the current-sinking capability of the driver determines the minimum value of the resistor.