SN74AHC594 8-Bit Shift Registers With Output Registers |

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8-Bit Shift Registers With Output Registers



The SNx4AHC594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clear (SRCLR, RCLR) inputs are provided on the shift and storage registers. A serial (QH′) output is provided for cascading purposes.


  • Operating Range 2-V to 5.5-V VCC
  • 8-Bit Serial-In, Parallel-Out Shift Registers with Storage
  • Independent Direct Overriding Clears on Shift and Storage
  • Independent Clocks for Shift and Storage Registers
  • Latch-Up Performance Exceeds 100 mA Per JESD 78,
    Class II
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)


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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) 3-state output Rating Operating temperature range (C)
SN74AHC594 Order now AHC     2     5.5     3.3
110     0.04     13.9
50     -50     No     Catalog     -40 to 125