Schieberegister 74HC595

74HC595-IC Schieberegister
74HC595-IC Schieberegister
Pin Number Pin Name Description
1,2,3,4,5,6,7Output Pins (Q1 to Q7)The 74hc595 has 8 output pins out of which 7 are these pins. They can be controlled serially
8GroundConnected to the Ground  of the circuit
(Q7) Serial OutputThis pin is used to connect more than one 74hc595 as cascading
10(MR) Master ResetResets all outputs as low. Must be held high for normal operation
11(SH_CP) ClockThis is the clock pin to which the clock signal has to be provided from MCU/MPU
12(ST_CP) LatchThe Latch pin is used to update the data to the output pins. It is active high
13(OE) Output EnableThe Output Enable is used to turn off the outputs. Must be held low for normal operation
14(DS) Serial DataThis is the pin to which data is sent, based on which the 8 outputs are controlled
15(Q0) OutputThe first output pin.
16VCCThis pin powers the IC, typically +5V is used


  • 8-bit, Serial In – Parallel out Shift register
  • Operating Voltage: 2V to 6V
  • Power Consumption: 80uA
  • Output source/sink current: 35mA
  • Output Voltage is equal to Operating voltage
  • Minimum high-level Input Voltage: 3.15V @(Vcc=4.5V)
  • Maximum low-level Input Voltage: 1.35V @(Vcc=4.5V)
  • Can be easily cascaded with more IC to get more outputs
  • Maximum Clock Frequency: 25Mhz @4.5V
  • Available in 16-pin PDIP, GDIP, PDSO packages

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