74HC595
Digital
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Generic — 74HC595
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Curated by CircuitSim
Details
Manufacturer
Generic
Part number
74HC595
Pins
14
Used in
No circuits
Added
Sep 2026
About this component
Eight-bit serial-in/parallel-out shift register with a separate output latch, active-low clear, active-low three-state output enable, and serial cascade output.
Parameters
Basic settings
4 parameters
VHIGH
High logic voltage
Voltage driven for a logic-high output.
5 V
VTH
Input threshold
Voltage threshold used to distinguish low and high inputs.
2.5 V
TPD
Propagation delay
Nominal delay applied to clocked state changes and output transitions.
13n s
ROUT
Enabled output resistance
Series resistance of each enabled parallel output.
20 ohm
Pins
Pins
14 pins
1
DS
Serial data input.
2
SHCP
Shift-register clock; data shifts on each rising edge.
3
STCP
Storage-register clock; shifted data transfers to the output latch on each rising edge.
4
MR_N
Active-low asynchronous clear for the shift register.
5
OE_N
Active-low output enable; a high level places QA through QH in the high-impedance state.
6
QA
Latched three-state parallel output A.
7
QB
Latched three-state parallel output B.
8
QC
Latched three-state parallel output C.
9
QD
Latched three-state parallel output D.
10
QE
Latched three-state parallel output E.
11
QF
Latched three-state parallel output F.
12
QG
Latched three-state parallel output G.
13
QH
Latched three-state parallel output H.
14
QHSER
Always-active serial cascade output from the final shift-register stage.
Public circuits using this component
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