3.3 V ABT八路缓冲器/驱动器, 3态输出 3.3 V ABT OCTAL BUFFERS / DRIVERS WITH 3 STATE OUTPUTS
These octal buffers and line drivers are designed specifically for low-voltage 3.3-V VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
The LVTH244A devices are organized as two 4-bit line drivers with separate output-enable OE\ inputs. When OE\ is low, the devices pass 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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
型号 | 品牌 | 下载 |
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SN74LVTH244ANSR | TI 德州仪器 | 下载 |
SN74CB3T3383DW | TI 德州仪器 | 下载 |
SN74CBT16212ADLRG4 | TI 德州仪器 | 下载 |
SN74CB3T3383DWR | TI 德州仪器 | 下载 |
SN74CBTLV3383PW | TI 德州仪器 | 下载 |
SN74CBT16212AZQLR | TI 德州仪器 | 下载 |
SN74CBT3383DBQR | TI 德州仪器 | 下载 |
SN74CB3T3383PW | TI 德州仪器 | 下载 |
SN74CBTLV3383PWE4 | TI 德州仪器 | 下载 |
SN74CBT3383DBR | TI 德州仪器 | 下载 |
SN74CB3T3383PWR | TI 德州仪器 | 下载 |