74HC594

74HC594
8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER
Description
Pin Assignments
The 74HC594 is a high speed CMOS device.
( Top View )
An eight bit shift register accepts data from the serial input (DS) on
Q1
1
16
Vcc
asserted low, the shift regisister reset function (SHR) sets all shift
Q2
2
15
Q0
register values to zero and is independent of all clocks. Also when
Q3
3
14
DS
Q4
4
13
STR
Q5
5
12
STCP
The
Q6
6
11
SHCP
storage resister includes output Q7S which is used for cascading
Q7
7
10
SHR
8
9
Q7S
each positive transition of the shift register clock (SHCP).
When
asserted low, the storage register reset function (STR) sets all shift
register values to zero and is independent of all clocks.
Data from the input serial shift register is placed in the output register
with a rising pulse on the storages resister clock (STCP).
information between devices. As the information moves into the
GND
storage register, it is asserted on the push-pull outputs Q0-Q7.
SO-16 / TSSOP-16
All registers capture data on rising edge and change output on the
falling edge. If both clocks are connected together, the input shift
register is always one clock cycle ahead of the output register.
Features
Applications


Wide Supply Voltage Range from 2.0V to 6.0V
Sinks or sources 8mA at VCC= 4.5V

General Purpose Logic

Serial to Parallel Data conversion

CMOS low power consumption

Capture and hold data for extended periods of time.

Schmitt Trigger Action at All Inputs


Inputs accept up to 6.0V

Allow simple serial bit streams from a microcontroller to control as
many peripheral lines as needed.

ESD Protection Tested per JESD 22
Wide array of products such as:

Exceeds 200-V Machine Model (A115-A)

Computer Peripherals

Exceeds 2000-V Human Body Model (A114-A)

Appliances

Exceeds 1000-V Charged Device Model (C101C)

Industrial Control

Latch-Up Exceeds 250mA per JESD 78, Class II

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Click here for ordering information, located at the end of datasheet
74AHC594
Document number: DS35484 Rev. 3 - 2
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74HC594
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
Pin Name
Q1
Q2
Q3
Q4
Q5
Q6
Q7
GND
Q7S
SHR
SHCP
STCP
11
12
13
14
15
16
Functional Diagram
Description
Parallel Data Output 1
Parallel Data Output 2
Parallel Data Output 3
Parallel Data Output 4
Parallel Data Output 5
Parallel Data Output 6
Parallel Data Output 7
Ground
Serial Data Output
Shift Register Reset active low
Shift Register Clock Input
Storage Register Clock Input
STR
DS
Q0
Storage Register Reset active low
VCC
Supply Voltage
Serial Data input
Parallel Data Output 0
Logic Diagram
STAGE 0
DS
D
STAGES 1 TO 6
Q
D
STAGE 7
Q
D
Q
FF0
CP
FF7
CP
R
R
SHCP
SHR
D
Q
D
LATCH
CP
Q
LATCH
CP
R
R
STCP
STR
Q0
74AHC594
Document number: DS35484 Rev. 3 - 2
Q1 Q2 Q3
Q4 Q5 Q6
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Q7
June 2013
© Diodes Incorporated
74HC594
Functional Description and Timing Diagram
Control
SHR
L
X
STR
X
L
Input
SHCP
X
X
Output
Function
STCP
X
X
DS
X
X
Q7S
L
NC
Qn
NC
L
Clear Shift Register
Clear Storage Register
H
X

L
H or L
Q6S
NC
Loads DS into shift register stage 0. All QS shifted
H
H
X

X
NC
Qs
H
H


H or L
Q6S
QnS
Contents of shift register moved to starge register all QS -> QN
Shift Register one pulse count ahead of storage register.
H=HIGH voltage state
L=LOW voltage state
=LOW to HIGH transition
X= don’t care – high or low (not floating)
NC= No change
SHCP
DS
STCP
SHR
STR
Q0
Q1
Q6
Q7
Q7S
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD CDM
ESD MM
Rating
2
1
200
Unit
KV
KV
V
V
Supply Voltage Range
-0.5 to +7.0
VI
Input Voltage Range
-0.5 to +7.0
V
Vo
Voltage applied to output in high or low state
-0.3 to VCC +0.5
V
IIK
Input Clamp Current
VI < -0.5V
-20
mA
IIK
Input Clamp Current
VI > Vcc +0.5V
20
mA
IOK
Output Clamp Current
VO <-0.5V
-20
mA
IOK
Output Clamp Current
VO > VCC + 0.5V
Q7 standard output
Continuous output current
Qn bus driver outputs
20
mA
±25
±35
mA
mA
Continuous current through Vcc
70
mA
VCC
IO
ICC
Note:
Description
Human Body Model ESD Protection
Charged Device Model ESD Protection
Machine Model ESD Protection
IGND
Continuous current through GND
-70
mA
TJ
Operating Junction Temperature
-40 to +150
°C
TSTG
Storage Temperature
-65 to +150
°C
PTOT
Total Power Dissipation
500
mW
4. Stresses beyond the absolute maximum may result in immediate failure or reduced reliability. These are stress values and device operation should be
within recommend values.
74AHC594
Document number: DS35484 Rev. 3 - 2
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74HC594
Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Conditions
Min
Max
Unit
Supply Voltage

2.0
6.0
V
VI
Input Voltage

0
Vcc
V
VO
Output Voltage

0
VCC
V
VCC = 2.0V

1000
Input transition rise or fall rate
VCC = 4.5V

500
VCC = 6.0V

400

-40
+125
°C
VCC
Δt/ΔV
TA
Note:
Operating free-air temperature

ns/V
5. Unused inputs should be held at VCC or Ground.
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
VIH
High-level
Input Voltage
Test Conditions
TA = +25°C
VCC
Min
Typ
TA = -40°C to +85°C TA = -40°C to +125°C
Max
Min
Max
Min
Max
Unit

2.0V
1.5
1.2

1.5

1.5


4.5V
3.15
2.4

3.15

3.15


6.0V
4.2
3.2
4.2
2.0V

0.8


0.5
4.2


0.5


0.5

4.5V

2.1
1.35

1.35

1.35

6.0V
2.8
1.8
2.0



1.9
1.8
2.0V

1.9
1.8
IOH = -20μA
All outputs

1.9
4.5V
4.4
4.5

4.4

4.4

6.0V
5.9
6.0

5.9

5.9

IOH = -4mA
4.5V
3.98
4.32

3.84

3.7

IOH = -5.2mA
6.0V
5.48
5.81

5.34

5.2

IOH = -6.0mA
4.5V
3.98
4.32

3.84

3.7

IOH = -7.8mA
6.0V
5.48
5.81

5.34

5.2

2.0V

0
0.1

0.1

0.1
4.5V

0
0.1

0.1

0.1
6.0V

0
0.1

0.1

0.1
IOL = 4.0mA
4.5V

.15
0.26

0.33

0.4
IOL = 5.2mA
6.0V

.16
0.26

0.33

0.4
Qn Bus
Outputs
IOL = 6.0mA
4.5V

.15
0.26

0.33

0.4
IOL = 7.8mA
6.0V

.16
0.26

0.33

0.4
Input Current
VI = GND to 5.5V
6.0V


±0.1

±1

±1
μA
ICC
Supply
Current
VI = GND or VCC
IO = 0
6.0V


8.0

80

160
μA
Ci
Input
Capacitance
Vi = VCC – or GND
6.0V

3.5
10

10

10
pF
VIL
Low-level
input voltage
High Level
Output
Voltage
VOH
Q7S output
Qn Bus
Outputs
Low-level
Output
Voltage
VOL
II
Q7S output
IOL = 20μA
All outputs
V
V

V
V
Operating Characteristics (@TA = +25°C, unless otherwise specified.)
Parameter
Cpd
Power dissipation
capacitance
74AHC594
Document number: DS35484 Rev. 3 - 2
Test
Conditions
VCC = 5V
Typ
Unit
f = 1 MHz all outputs switching-no load
51
pF
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74HC594
Switching Characteristics
TA = +25°C
Min
Typ
Max
-40°C to +85°C
-40°C to +125°C
Symbol /
Parameter
Pins
Test Conditions
VCC
2.0V
6
30

4.8

4
fMAX
Maximum
Frequency

SHCP or
STCP
Figure 2
4.5V
30
92

24

20

100

SHCP
HIGH or
LOW
tW
Pulse Width
tSU
Set-up Time
STCP
HIGH or
LOW
5.0V
Figure 2
Figure 2
SHR and
STR
HIGH or
LOW
Figure 2
DS to
SHCP
Figure 2
SHR to
STCP
Figure 2
SHCP to
STCP
Figure 2
SHCP to
Q7S
Figure 2
tPD
Propagation
Delay
STCP to
Qn
tH
Hold Time
DS to
SHCP
tREC
Recovery Time
SHR to
SHCP and
STR to
STCP
SHR to
Q7S
Figure 2
Figure 2
Figure 2
Figure 2
tPHL
Propagation
Delay
STR to Qn
tTHL
Transition Time
Figure 2
Serial data
output Q7S
Figure 2
Parallel
Data
Outputs QN
Figure 2
74AHC594
Document number: DS35484 Rev. 3 - 2
Min
Max
Min


6.0V
35
109

28

24
2.0V
80
10

100

120

4.5V
16
4

20

24


MHz

6.0V
14
3

17

20
2.0V
80
10

100

120

4.5V
16
4

20

24

6.0V
14
3

17

20

2.0V
80
14

100

120

4.5V
16
5

20

24

6.0V
14
4

17

20

2.0V
100
10

125

150

4.5V
20
4

25

30

6.0V
17
3

21

26

2.0V
100
14

125

150

4.5V
20
5

25

30

6.0V
17
4

21

26

2.0V
100
17

125

150

4.5V
20
6

25

30

6.0V
17
5
21
26
2.0V

44

150


185


225
4.5V

16
30

37

45
5.0V

13


14


31

6.0V

26


38
2.0V

44
150

185

225
4.5V

16
30

37

45
5.0V

13

14
-8


30

38
2.0V

25

31

6.0V

26
4.5V
5
-3

6.0V
4
-2



35
6

7

5

6

ns
ns
ns
ns
ns
ns

2.0V
50
-14

65

75

4.5V
10
-5

13

15

6.0V
9
-4

11

13

2.0V

39
150

185

225
4.5V

14
30

37

45
5.0V

11


6.0V

12

26


31


38
2.0V

39
125

155

185
4.5V

14
25

31

37
5.0V

11


12


26

6.0V

21


31
2.0V

19
75

95

110
4.5V

7
15

19

22
6.0V

6
13

16

19
2.0V

14
60

75

90
4.5V

5
12

15

18
6.0V

4
10

13

15
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Unit
Max
ns
ns
ns
ns
ns
ns
June 2013
© Diodes Incorporated
74HC594
Parameter Measurement Information
VCC
Inputs
VI
VM
CL
2.0V
VCC
tr/tf
6ns
VCC/2
50pF
4.5V
VCC
6ns
VCC/2
50pF
5.0V
VCC
6ns
VCC/2
15pF
6.0V
VCC
6ns
VCC/2
50pF
Voltage Waveform
Pulse Duration and Recovery Time
Voltage Waveform
Set-up and Hold Times
Voltage Waveform
Propagation Delay Times
Inverting and Non Inverting Outputs
Notes:
A. Includes test lead and test apparatus capacitance.
B. All pulses are supplied at pulse repetition rate ≤ 10 MHz.
C. Inputs are measured separately one transition per measurement.
D. tPLH and tPHL are the same as tPD.
Figure 2 Load Circuit and Voltage Waveforms
74AHC594
Document number: DS35484 Rev. 3 - 2
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74HC594
Ordering Information
Note:
7” Tape and Reel (Note 6)
Part Number Suffix
Part Number
Package Code
Packaging
74HC594S16-13
S16
SO-16
2500/Tape & Reel
-13
74HC594T16-13
T16
TSSOP-16
2500/Tape & Reel
-13
Quantity
6. The taping orientation is located on our website at http://www.diodes.com/datasheets/ap02007.pdf
Marking Information
(1) SO-16, TSSOP16
74AHC594
Document number: DS35484 Rev. 3 - 2
Part Number
Package
74HC594S16
SO-16
74HC594T16
TSSOP-16
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74HC594
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
Package Type: SO-16
H
E
Gauge Plane

L
Detail ‘A’
D
A
A2
e
B
A1
C
SO-16
Dim
Min
Max
A
1.40
1.75
A1
0.10
0.25
A2
1.30
1.50
B
0.33
0.51
C
0.19
0.25
D
9.80
10.00
E
3.80
4.00
e
1.27 Typ
H
5.80
6.20
L
0.38
1.27
Θ
0
8
All Dimensions in mm
Detail ‘A’
Package Type: TSSOP-16
E/2
SEE DETAIL 'A'
E1
E
Y
X
PIN 1
x)
b
e

Ø0.760Depth0.050±0.02
A2
R1
D
R
L2
C
GAUGE
PLANE
A
L
SEATING PLANE
A1
L1

TSSOP-16
Dim Min Max Typ
A
1.08
A1 0.05 0.15
A2 0.80 0.93
b 0.19 0.30
c 0.09 0.20
D 4.90 5.10
E
6.40 BSC
E1 4.30 4.50
e
0.65 BSC
L 0.45 0.75
L1
1.00 REF
L2
0.25 BSC
R 0.09
R1 0.09
X
1.350
Y
1.050
Θ
0°
8°
Θ1
5°
15°
Θ2
0°
All Dimensions in mm
DETAIL 'A'
74AHC594
Document number: DS35484 Rev. 3 - 2
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74HC594
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
Package Type: SO-16
X1
Y1
Y
Pin 1
Dimensions
C
X
X1
Y
Y1
Value (in mm)
1.270
0.670
9.560
1.450
6.400
C
X
Package Type: TSSOP-16
X1
Dimensions
C
X
X1
Y
Y1
Y1
Y (16x)
Value (in mm)
0.650
0.350
4.900
1.400
6.800
1
X (16x)
74AHC594
Document number: DS35484 Rev. 3 - 2
C
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74HC594
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
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Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or
systems.
Copyright © 2013, Diodes Incorporated
www.diodes.com
74AHC594
Document number: DS35484 Rev. 3 - 2
10 of 10
www.diodes.com
June 2013
© Diodes Incorporated
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