TEXAS INSTRUMENTS SN74LV595AIPWREP 移位寄存器, 串行至并行, 1元件, TSSOP, 16 引脚, 2 V, 5.5 V
The SN74LV595A device is an 8-bit shift register designed for 2-V to 5.5-V VCC operation.
This device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift and storage register. The shift register has a direct overriding clear SRCLR\ input, serial SER input, and a serial output for cascading. When the output-enable OE\ input is high, all outputs except QH are in the high-impedance state.
Both the shift register clock SRCLK and storage register clock RCLK are positive-edge triggered. If both clocks are connected together, the shift register always is one clock pulse ahead of the storage register.
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.
The device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
型号 | 品牌 | 下载 |
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SN74LV595AIPWREP | TI 德州仪器 | 下载 |
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