(ACTIVE) 8-Bit Shift Registers With 3-State Output Registers


Functional Diagram


The SNx4HC595 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.


  • 8-Bit Serial-In, Parallel-Out Shift
  • Wide Operating Voltage Range of 2 V to 6 V
  • High-Current 3-State Outputs Can Drive Up to 15
    LSTTL Loads
  • Low Power Consumption: 80-µA (Maximum) ICC
  • tpd = 13 ns (Typical)
  • ±6-mA Output Drive at 5 V
  • Low Input Current: 1 µA (Maximum)
  • Shift Register Has Direct Clear
  • On Products Compliant to MIL-PRF-38535,
    All Parameters Are Tested Unless Otherwise
    Noted. On All Other Products, Production
    Processing Does Not Necessarily Include Testing
    of All Parameters.
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Technology Family HC    
VCC (Min) (V) 2    
VCC (Max) (V) 6    
Voltage (Nom) (V) 6    
F @ nom voltage (Max) (Mhz) 28    
ICC @ nom voltage (Max) (mA) 0.08    
tpd @ Nom Voltage (Max) (ns) 34    
IOL (Max) (mA) 7.8    
IOH (Max) (mA) -7.8    
3-state output Yes    
Rating Catalog    
Operating temperature range (C) -40 to 85    

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Technical Documents

Datasheet (1)

Application notes (14)

User guides (2)

Selection guides (1)

Solution guides (1)

More literature (2)

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