74HCT594

74HCT594
8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER
Description
Pin Assignments
The 74HCT594 is a high speed CMOS device that is designed to be
pin compatable with 74LS low power Schottky types.
An eight bit shift register accepts data from the serial input (DS) on
each positive transition of the shift register clock (SHCP). When
asserted low the shift register reset function (SHR) sets all shift
register values to zero and is independent of all clocks. Also 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).
The storage resister includes output Q7S which is used for
cascading information between devices. As the information moves
into the storage register, it is asserted on the push-pull outputs Q0Q7.
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 4.5V to 5.5V
•
General Purpose Logic
•
Sinks or sources 8mA at VCC = 4.5V
•
Serial to Parallel Data conversion
•
CMOS low power consumption
•
Capture and hold data for extended periods of time.
•
Schmitt Trigger Action at All Inputs
•
Allow simple serial bit streams from a microcontroller to
•
Inputs accept up to 6.0V
•
ESD Protection Tested per JESD 22
control as many peripheral lines as needed.
•
Wide array of products such as:
Exceeds 200-V Machine Model (A115-A)
o
Computer peripherals
Exceeds 2000-V Human Body Model (A114-A)
o
Appliances
Exceeds 1000-V Charged Device Model (C101C)
o
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 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 < 1000 ppm antimony compounds.
Click for Ordering Information
74HCT594
Document number: DS35491 Rev. 2 - 2
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74HCT594
Pin Descriptions
Functional Diagram
Pin Number
Pin Name
Description
1
Q1
Parallel Data Output 1
2
Q2
Parallel Data Output 2
3
Q3
Parallel Data Output 3
4
Q4
Parallel Data Output 4
5
Q5
Parallel Data Output 5
6
Q6
Parallel Data Output 6
7
Q7
Parallel Data Output 7
8
GND
Ground
9
Q7S
Serial Data Output
10
SHR
Shift Register Reset active low
11
SHCP
12
STCP
13
STR
14
DS
Serial Data Input
15
Q0
Parallel Data Output 0
16
Vcc
Supply Voltage
Shift Register Clock Input
Storage Register Clock Input
Storage Register Reset active low
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
74HCT594
Document number: DS35491 Rev. 2 - 2
Q1 Q2 Q3
Q4 Q5 Q6
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Q7
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© Diodes Incorporated
74HCT594
Functional Description and Timing Diagram
Control
Input
Output
Function
SHR
STR
SHCP
STCP
DS
Q7S
Qn
L
X
X
X
X
L
NC
X
L
X
X
X
NC
L
H
X

L
H or L
Q6S
NC
Loads DS into shift register stage 0. All QS shifted
H
H
X

X
NC
Qs
Contents of shift register moved to starge register all QS -> QN
H
H


H or L
Q6S
QnS
Clear Shift Register
Clear Storage Register
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
74HCT594
Document number: DS35491 Rev. 2 - 2
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74HCT594
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.
Symbol
ESD HBM
ESD CDM
ESD MM
VCC
VI
Notes:
Description
Rating
Unit
Human Body Model ESD Protection
2
KV
Charged Device Model ESD Protection
1
KV
Machine Model ESD Protection
200
V
Supply Voltage Range
-0.5 to 7.0
V
Input Voltage Range
-0.5 to 7.0
V
Vo
Voltage applied to output in high or low state
IIK
Input Clamp Current
VI< -0.5V
-0.3 to VCC +0.5
V
-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
20
mA
IO
Continuous output current
Q7 standard output
+/- 25
mA
Qn bus driver outputs
+/- 35
mA
ICC
Continuous current through Vcc
70
mA
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.
Recommended Operating Conditions (Note 5) (@TA = +25°C, unless otherwise specified.)
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Output Voltage
Conditions
Min
Max
Unit


4.5
5.5
V
0
5.5
V
Active Mode
0
VCC
V
t/V
Input transition rise or fall rate
VCC = 4.5V to 5.5V

500
ns/V
TA
Operating free-air temperature

-40
+125
°C
Notes:
5. Unused inputs should be held at VCC or Ground.
74HCT594
Document number: DS35491 Rev. 2 - 2
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74HCT594
Electrical Characteristics (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
Test Conditions
TA = +25°C
VCC
-40°C to +85°C
-40°C to +125°C
Min
Typ
Max
Min
Max
Min
Max
Unit
VIH
High-level
Input Voltage

4.5 V to 5.5 V
2.0
1.6

2.0

2.0

V
VIL
Low-level input

voltage
4.5 V to 5.5 V


0.8

0.8

0.8
V
4.5 V
4.4
4.5

4.4

4.4

3.98
4.32
IOH = -20μA
High Level
Output Voltage All outputs
VOH
Q7S output
Qn Bus
Outputs
4.5 V
IOH = -4.0mA
4.5 V
IOH = -6.0 mA
IOL = 20μA
Low-level
Output Voltage All outputs
VOL
II
ICC
ICC
Q7S output
IOL = 4.0mA
Qn Bus
Outputs
IOL = 6.0mA
Input Current
Supply Current
VI =GND to
5.5 V
VI = GND or
IO=0
VCC
3.85

3.7

3.85

3.7



0
0.1

0.1

0.1
4.5 V

0.15
0.26

0.33

0.4
0.26

0.33

0.4


0.16
V
5.5 V


±0.1

±1

±1
μA
5.5 V


8.0

80

160
μA
4.5V to 5.5 V

100
240

300

300
PINS
Test Per
Pin
SHCP
VI = Vcc
SHST
-2.1 V
Additional
Supply Current Other
SHR
μA
STR
PIN
DS
IO=0
Input
Capacitance

V
4.5 V
4.5 V
VI = Vcc
or GND
Ci
3.98
4.32

Vi = VCC
5.5 V
or GND
4.5V to 5.5 V

75
120

150

150

3.5
10


10

10
pF
Operating Characteristics
Parameter
Cpd
Power dissipation
capacitance
74HCT594
Document number: DS35491 Rev. 2 - 2
Test
Conditions
f = 1 MHz all outputs switching-no load
VI = GND TO VCC – 1.5V
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VCC = 5V
Unit
TYP
51
pF
June 2013
© Diodes Incorporated
74HCT594
Switching Characteristics
Symbol /
Parameter
fMAX
Maximum
Frequency
Pins
Test
Conditions
Figure 2
SHCP or
STCP
CL=15pF
SHCP
Figure 2
HIGH or
LOW
CL=50pF
STCP
tW
Pulse Width
Figure 2
HIGH or
LOW
CL=50pF
VCC
TA = +25°C
-40°C to +85°C
-40°C to +125°C
Min
Typ.
Max
Min
Max
Min
Max
5.0 V
30
92

24

20

4.5 V
16
4

20

24

4.5 V
16
4

20

24

4.5 V
16
6

20

24

4.5 V
20
4

25

30

4.5 V
20
6

25

30

4.5 V
20
7

25

30

4.5 V

18
32

40

48
5.0 V

15





Unit
MHz
ns
SHR and
STR
Figure 2
HIGH or
LOW
CL=50pF
Figure 2
DS to SHCP
tSU
Set-up Time
CL=50pF
Figure 2
SHR to
STCP
CL=50pF 2
SHCP to
STCP
CL=50pF
Figure 2
Figure 2
SHCP to
Q7S
CL=50p
Figure 2
tPD
CL=15pF
Propagation
Delay
Figure 2
ns
ns
4.5 V

18
32

40

48
5.0 V

15





Figure 2
4.5 V
5
-3

6

7

ns
Figure 2
4.5 V
10
-5

13

15

ns
CL=50p
STCP to Qn
Figure 2
CL=15p
tH
Hold Time
tREC
DS to SHCP
SHR to
SHCP and
Recovery Time
STR to STCP
74HCT594
Document number: DS35491 Rev. 2 - 2
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74HCT594
Switching Characteristics (cont.)
Symbol /
Parameter
Pins
Test
Conditions
Figure 2
CL=50pF
VCC
4.5 V
TA = +25°C
-40°C to +85°C
-40°C to +125°C
Min
Typ.
Max
Min
Max
Min
Max

17
30

38

45
SHR to Q7S
ns
Figure 2
tPHL
CL=15pF
Propagation
Delay
Figure 2
CL=50pF
5.0 V

14





4.5 V

17
30

38

45
ns
STR to Qn
Figure 2
CL=15pF
tTHL
tTLH
Transition
Times
Serial data
output Q7S
Parallel Data
Outputs QN
74HCT594
Document number: DS35491 Rev. 2 - 2
Unit
Figure 2
CL=50pF
Figure 2
CL=50pF
5.0 V

14





4.5 V

7
15

19

22
ns
4.5 V

5
12

15

18
ns
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74HCT594
Parameter Measurement Information
Inputs
VCC
VM
VI
tr/tf
4.5V
VCC
6ns
VCC/2
5.0V
VCC
6ns
VCC/2
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
74HCT594
Document number: DS35491 Rev. 2 - 2
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74HCT594
Ordering Information
Device
Package Code
7” Tape and Reel (Note 6)
Packaging
Quantity
Part Number Suffix
74HCT594S16-13
S16
SO-16
2500/Tape & Reel
-13
74HCT594T16-13
T16
TSSOP-16
2500/Tape & Reel
-13
Notes:
6. The taping orientation is located on our website at http://www.diodes.com/datasheets/ap02007.pdf
Marking Information
(1) SO-16, TSSOP-16
Part Number
74HCT594
Document number: DS35491 Rev. 2 - 2
Package
74HCT594S16
SO-16
74HCT594T16
TSSOP-16
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74HCT594
Package Outline Dimensions (All Dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
(1)
Package Type: SO-16
SOIC-16
D
Dim
E/2
E1/2
E
E1
b 16X
e
A1
A
Min
Max
Typ
A

1.75

A1
0.10
0.25

b
0.31
0.51

c
0.10
0.25

D
9.80
10.00

E
5.80
6.20
E1
3.80
4.00


e


1.27
L
0.40
1.27

Ø
0°
8°

Ø1
5°
15°

SEATING PLANE
All Dimensions in mm
DETAIL 'A'
8X Ø1
GAUGE PLANE
SEATING PLANE
L
Ø
TSSOP-16
(2)
Package Type: TSSOP-16
Dim Min Max
Typ

1.08

A1 0.05 0.15

A

A2 0.80 0.93
E/2
SEE DETAIL 'A'
E1
E
b
0.19 0.30

c
0.09 0.20

D
4.90 5.10

E
Y
6.40 BSC

E1 4.30 4.50
e
X
L
PIN 1



R1 0.09


X


1.350
GAUGE
PLANE
Y

8°
1.050
Θ

0°

Θ1
5°
15°

Θ2
0°


R1
D
R
C
L2
A
L
SEATING PLANE
A1
74HCT594
Document number: DS35491 Rev. 2 - 2
L1
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0.25 BSC
0.09
R
Ø0.760Depth0.050±0.02
1.00 REF
L2
x)
b

0.45 0.75
L1
e
A2
0.65 BSC

All Dimensions in mm
June 2013
© Diodes Incorporated
74HCT594
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
Package Type: SO-16
Dimensions
C
X
X1
Y
Y1
X1
Value (in mm)
1.270
0.670
9.560
1.450
6.400
Y1
Y
Pin 1
C
X
Package Type: TSSOP-16
X1
Dimensions
C
X
X1
Y
Y1
Value (in mm)
0.650
0.350
4.900
1.400
6.800
Y1
Y (16x)
1
X (16x)
74HCT594
Document number: DS35491 Rev. 2 - 2
C
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74HCT594
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall
assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes
Incorporated website, harmless against all damages.
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channel.
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directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
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This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is
the final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the
express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause
the
failure of the life support device or to affect its safety or effectiveness.
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 systemsrelated 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.
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