8-Bit Shift Registers With 3-State Output Registers - SN74HC595


8-Bit Shift Registers With 3-State Output Registers


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.
    • Network Switches
    • Power Infrastructure
    • LED Displays
    • Servers

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Other qualified versions of SN74HC595

Version Part Number Definition
Military SN54HC595 QML certified for Military and Defense Applications
Enhanced Product SN74HC595-EP Supports Defense, Aerospace and Medical Applications

Parametrics Compare all products in Shift Register

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)
Output Drive (IOL/IOH) (Max) (mA)
Input Type
Output Type
3-State Output
Operating Temperature Range (C)
Approx. Price (US$)
SN74HC595 SN54HC595
HC     HC    
2     2    
6     6    
6     6    
28     28    
0.08     0.08    
34     34    
7.8/-7.8     7.8/-7.8    
CMOS     CMOS    
CMOS     CMOS    
Yes     Yes    
Catalog     Military    
-40 to 85     -55 to 125    
0.14 | 1ku      
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