SN74HC244NSR
TI(德州仪器)
电子元器件分类
八路缓冲器并用3态输出线路驱动器 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
The is an octal Buffer/Line Driver designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers and bus-oriented receivers and transmitters. The SNx4HC244 device is organized as two 4-bit buffers and drivers with separate output-enable OE inputs. When OE is low, the device passes non-inverted 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 pull-up resistor and the minimum value of the resistor is determined by the current-sinking capability of the driver.
- .
- High-current outputs drive up to 15 LSTTL loads
- .
- 3-state Outputs drive bus lines or buffer memory address registers
- .
- 80µA maximum ICC low power consumption
- .
- 11ns typical Propagation delay tpd
- .
- ±6mA Output drive at 5V
- .
- 1µA maximum Low input current
- .
- Green product and no Sb/Br
