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74HC595 8-bit serial-in, serial or parallel-out shift register

74HC595 8-bit serial-in, serial or parallel-out shift register

  • Model: IC-74HC595
  • Shipping Weight: 1g
  • 493 Units in Stock
  • Manufactured by: Texas Instruments
  • 74HC595 Datasheet

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The 'HC595 devices contain 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 serial outputs for cascading. When the output-enable (OE) input is high, the outputs 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.