74AHC595

74AHC595
8-BIT SHIFT REGISTER WITH 8-BIT OUTPUT REGISTER
Description
Pin Assignments
The 74AHC595 is an advanced high speed CMOS device.
An eight bit shift register accepts data from the serial input (DS) on
each positive transition of the shift register clock (STCP).
When
asserted low the reset function (MR) 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 (SHCP). With the
output enable (OEሻ asserted low the 3-state outputs Q0-Q7 become
active and present.
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 2.0 V to 5.5V
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 5.5V

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
74AHC595
Document number: DS35486 Rev. 3 - 2
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74AHC595
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
Q1
Q2
Q3
Q4
Q5
Q6
Q7
GND
Q7S
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
MR
SHCP
STCP
Master Reset Input
OE
Output Enable Input
DS
Q0
Vcc
Serial Data Input
Parallel Data Output 0
Supply Voltage
Shift Register Clock Input
Storage Register Clock Input
Logic Diagram
74AHC595
Document number: DS35486 Rev. 3 - 2
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74AHC595
Functional Description and Timing Diagram
Control
Input
Output
SHCP
STCP
OE
MR
DS
Q7S
Qn
X
X
L
L

L
NC
X

X
L
L

L
L
H
L

L
Z
X

X
L
H

Q6S
NC
X

L
H

NC
QnS


L
H

Q6S
QnS
Function
Low-level asserted on MR clears shift register.
Storage register is unchanged
Empty shift register transferred to storage register
Shift register remains clear;: All Q ouputs in Z state.
HIGH is shifted into first stage of Shift Register Contents of each
register shifted to next register
The content of Q6S has been shifted to Q7S and now appears on
device pin Q7S
Contents of shift register copied to storage register. With output now
in active state the storage resister contents appear on Q outputs.
H=HIGH voltage state
L=LOW voltage state
=LOW to HIGH transition
X= don’t care – high or low (not floating)
NC= No change
Z= high-impedance state
SHCP
DS
STCP
MR
OE
Z-state
Q0
Z-state
Q1
Z-state
Q6
Z-state
Q7
Q7S
74AHC595
Document number: DS35486 Rev. 3 - 2
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74AHC595
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol
ESD HBM
ESD CDM
ESD MM
VCC
VI
Vo
IIK
IOK
IOK
IO
ICC
IGND
TJ
TSTG
PTOT
Note:
Parameter
Human Body Model ESD Protection
Charged Device Model ESD Protection
Machine Model ESD Protection
Supply Voltage Range
Input Voltage Range
Voltage applied to output in high or low state
Rating
2
1
200
-0.5 to 7.0
-0.5 to 7.0
Unit
KV
KV
V
V
V
V
mA
mA
mA
mA
mA
mA
°C
°C
mW
-0.3 to VCC +0.5
-20
-20
25
+/- 25
75
-75
-40 to 150
-65 to 150
500
Input Clamp Current
VI < -0.5V
Output Clamp Current VO <-0.5V
Output Clamp Current VO > VCC + 0.5V
Continuous output current
Continuous current through Vcc or GND
Continuous current through Vcc or GND
Operating Junction Temperature
Storage Temperature
Total Power Dissipation
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
VI
VO
Parameter
Supply Voltage
Input Voltage
Output Voltage
Δt/ΔV
Input transition Rise or Fall Rate
TA
Operating Free-Air Temperature
Note:
Conditions

Active Mode
Min
2.0
0
0
VCC = 3.0V to 3.6V
VCC = 4.5V to 5.5V



-40

Max
5.5
5.5
Unit
V
V
V
VCC
100
20
+125
ns/V
°C
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
VIL
Low-level input
voltage
VOH
High Level
Output Voltage
VOL
II
Low-level
Output Voltage
Input Current
IOZ
OFF-state
output current
ICC
Supply Current
Ci
Input
Capacitance
Test Conditions
VCC






IOH = -50μA
IOH = -50μA
IOH = -50μA
IOH = -4mA
IOH = -8mA
IOL = 50μA
IOL = 50μA
IOL = 50μA
IOL = 4mA
IOL = 8mA
VI = GND to 5.5V
VI = VIH or VIL;
VO = VCC or GND
VI = GND or VCC IO =
0
2.0V
3.0V
5.5V
2.0V
3.0V
5.5V
2.0V
Vi = VCC or GND
74AHC595
Document number: DS35486 Rev. 3 - 2
3.0V
4.5V
3.0V
4.5V
2.0V
Min
1.5
2.1
3.85



1.9
2.9
4.4
2.58
3.94
TA = +25°C
Typ
Max






0.5

0.9

1.65

2.0

3.0

4.5





0
0.1
0
0.1
0
0.1
0.36

0.36

0.1
±0.1
TA = -40°C to +85°C TA = -40°C to +125°C
Min
Max
Min
Max
1.5
1.5


2.1
2.1


3.85
3.85


0.5
0.5


0.9
0.9


1.65
1.65


1.9
1.9


2.9
2.9


4.4
4.4


2.48
2.40


3.80
3.70


0.1
0.1


0.1
0.1


0.1
0.1


0.44
0.55


0.44
0.55


±1
±2


Unit
V
V
V
5.5V






5.5V


±0.25

±2.5

±10
μA
5.5V


4.0

40

80
μA
5.5V

4
10

10

10
pF
3.0V
4.5V
3.0V
4.5V
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μA
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74AHC595
Switching Characteristics
Symbol /
Parameter
Pins
Test Conditions
fMAX
Maximum
Frequency
SHCP or STCP
Figure 2
SHCP
HIGH or LOW
Figure 2
tW
Pulse Width
STCP
HIGH or LOW
Figure 2
MR LOW
Figure 2
DS to SHCP
Figure 2
SHCP to STCP
Figure 2
tH
Hold Time
DS to SHCP
Figure 2
tREC
Recovery Time
MR to SHCP
Figure 2
tSU
Set-up Time
SHCP to Q7S
tPD
Propagation
Delay
STCP to Qn
MR to Q7S
tEN
Enable Time
OE to Qn
tDIS
Disable Time
OE to Qn
Figure 2
CL = 15pF
Figure 2
CL = 50pF
Figure 2
CL = 15pF
Figure 2
CL = 50pF
Figure 2
CL = 15pF
Figure 2
CL = 50pF
Figure 2
CL = 15pF
Figure 2
CL = 50pF
Figure 2
CL = 15pF
Figure 2
CL = 50pF
VCC
Min
TA = +25°C
Typ
Max
-40°C to +85°C
-40°C to +125°C
Min
Max
Min
Max
3.0V to 3.6V
80
125

60

40

4.5V to 5.5V
130
70

110

90

3.0V to 3.6V
5.0


5.0

5.0

4.5V to 5.5V
5.0


5.0

5.0

3.0V to 3.6V
5.0


5.0

5.0

4.5V to 5.5V
5.0


5.0

5.0

3.0V to 3.6V
5.0


5.0

5.0

4.5V to 5.5V
5.0


5.0

5.0

3.0V to 3.6V
3.5


3.5

3.5

4.5V to 5.5V
3.0


3.0

3.0

3.0V to 3.6V
8.5


8.5

8.5

4.5V to 5.5V
5.0


5.0

5.0

3.0V to 3.6V
1.5


1.5

1.5

4.5V to 5.5V
2.0


2.0

2.0

3.0V to 3.6V
3.0


3.0

3.0

4.5V to 5.5V
2.5

13.0
2.5
2.5
3.0V to 3.6V


5.7
1.0

15.0
1.0

16.5
4.5V to 5.5V

4.0
8.2
1.0
9.4
1.0
10.5
3.0V to 3.6V

7.7
16.5
1.0
18.5
1.0
20.1
4.5V to 5.5V

5.4
10.0
1.0
11.4
1.0
12.5
3.0V to 3.6V

5.9
11.9
1.0
13.5
1.0
15.0
4.5V to 5.5V

4.2
7.4
1.0
8.5
1.0
10.5
3.0V to 3.6V

7.7
15.4
1.0
17.0
1.0
18.5
4.5V to 5.5V

5.5
9.0
1.0
10.5
1.0
11.5
3.0V to 3.6V

5.9
12.8
1.0
13.7
1.0
15.0
4.5 V to 5.5V

4.4
8.0
1.0
9.1
1.0
10.5
3.0V to 3.6V

7.4
16.3
1.0
17.2
1.0
18.7
4.5V to 5.5V

5.6
10.0
1.0
11.1
1.0
12.0
3.0V to 3.6V

5.6
11.5
1.0
13.5
1.0
15.0
4.5V to 5.5V

4.0
8.6
1.0
10.0
1.0
10.5
3.0V to 3.6V

7.4
15.0
1.0
17.0
1.0
18.5
4.5V to 5.5V

5.3
10.6
1.0
12.0
1.0
13.0
3.0V to 3.6V

5.4
11.0
1.0
13.0
1.0
14.5
4.5V to 5.5V

3.8
8.0
1.0
9.5
1.0
10.5
3.0V to 3.6V

8.7
15.7
1.0
16.2
1.0
17.5
4.5V to 5.5V

5.8
10.3
1.0
11.0
1.0
12.0
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Operating Characteristics (@TA = +25°C, unless otherwise specified.)
Parameter
Cpd
Power dissipation
capacitance
74AHC595
Document number: DS35486 Rev. 3 - 2
Test
Conditions
VCC = 5V
Typ
Unit
f = 1 MHz all outputs switching-no load
42
pF
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74AHC595
Parameter Measurement Information
RL
From Output
Under Test
VLOAD
TEST
Vload
tPLH/tPHL
Open
CL
tPLZ/tPZL
VCC
(see Note A)
tPHZ/tPZH
GND
Vcc
3.3V -3.6V
4.5V to 5.5V
Notes:
Inputs
VM
CL
VCC
tr/tf
3ns
VCC/2
15pF, 50pF
VCC
3ns
VCC/2
15pF, 50pF
VI
Voltage Waveform
Pulse Duration and Recovery Time
Voltage Waveform
Set-up and Hold Times
Voltage Waveform
Propagation Delay Times
Inverting and Non Inverting Outputs
Voltage Waveform
Enable and Disable Times
A .Includes test lead and test apparatus capacitance.
B. Output Waveform 1 depends on the internal QN node being low and behaves in this manner based on OE pin.
Output Waveform 2 depends on the internal QN node being high and behaves in this manner based on OE pin.
C. All pulses are supplied at pulse repetition rate ≤ 10 MHz
D. Inputs are measured separately one transition per measurement
E. tPLH and tPHL are the same as tPD.
Figure 2. Load Circuit and Voltage Waveforms
74AHC595
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74AHC595
Ordering Information
Part Number
7” Tape and Reel (Note 6)
Part Number Suffix
Package Code
Packaging
74AHC595S16-13
S16
SO-16
2500/Tape & Reel
-13
74AHC595T16-13
T16
TSSOP-16
2500/Tape & Reel
-13
Note:
Quantity
6. The taping orientation is located on our website at http://www.diodes.com/datasheets/ap02007.pdf
Marking Information
(1) SO-16, TSSOP16
Part Number
74AHC595S16
74AHC595T16
74AHC595
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Package
SO-16
TSSOP-16
June 2013
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74AHC595
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'
74AHC595
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74AHC595
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)
74AHC595
Document number: DS35486 Rev. 3 - 2
C
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74AHC595
IMPORTANT NOTICE
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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).
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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.
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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 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.
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