INTEGRATED CIRCUITS
DATA SHEET
For a complete data sheet, please also download:
• The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Information
• The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines
74HC/HCT595
8-bit serial-in/serial or parallel-out
shift register with output latches;
3-state
Product specification
Supersedes data of September 1993
File under Integrated Circuits, IC06
1998 Jun 04
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC/HCT595
FEATURES
• 8-bit serial input
• 8-bit serial or parallel output
• Storage register with 3-state outputs
• Shift register with direct clear
• 100 MHz (typ) shift out frequency
• Output capability:
– parallel outputs; bus driver
– serial output; standard
• ICC category: MSI.
APPLICATIONS
• Serial-to-parallel data conversion
• Remote control holding register.
QUICK REFERENCE DATA
GND = 0 V; Tamb = 25 C; tr = tf = 6 ns.
DESCRIPTION
The 74HC/HCT595 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The “595” is an 8-stage serial shift register with a storage
register and 3-state outputs. The shift register and storage
register have separate clocks.
Data is shifted on the positive-going transitions of the
SHCP input. The data in each register is transferred to the
storage register on a positive-going transition of the STCP
input. If both clocks are connected together, the shift
register will always be one clock pulse ahead of the
storage register.
The shift register has a serial input (DS) and a serial
standard output (Q7’) for cascading. It is also provided with
asynchronous reset (active LOW) for all 8 shift register
stages. The storage register has 8 parallel 3-state bus
driver outputs. Data in the storage register appears at the
output whenever the output enable input (OE) is LOW.
SYMBOL PARAMETER
CONDITIONS
tPHL/tPLH
propagation delay
CL = 15 pF; VCC = 5 V
SHCP to Q7’
STCP to Qn
MR to Q7’
fmax
CI
CPD
maximum clock frequency SHCP, STCP
input capacitance
power dissipation capacitance per package
notes 1 and 2
TYP.
HC
HCT
16
17
14
100
3.5
115
21
20
19
57
3.5
130
UNIT
ns
ns
ns
MHz
pF
pF
Notes
1. CPD is used to determine the dynamic power dissipation (PD in m W):
2 ·
PD = CPD · VCC
fi +
(CL · VCC
2 ·
fo) where:
fi = input frequency in MHz
fo = output frequency in MHz
(CL · VCC
fo) = sum of outputs
CL = output load capacitance in pF
VCC = supply voltage in V
2 ·
2. For HC the condition is VI = GND to VCC; for HCT the condition is VI = GND to VCC - 1.5 V.
1998 Jun 04
2
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
ORDERING INFORMATION
Product specification
74HC/HCT595
TYPE NUMBER
74HC595N
74HC595D
74HC595DB
74HC595PW
74HCT595N
74HCT595D
PACKAGE
NAME
DIP16
SO16
SSOP16
TSSOP16
DIP16
SO16
DESCRIPTION
VERSION
SOT38-1
plastic dual in-line package; 16 leads (300 mil); long body
SOT109-1
plastic small outline package; 16 leads; body width 3.9 mm
SOT338-1
plastic shrink small outline package; 16 leads; body width 5.3 mm
plastic thin shrink small outline package; 16 leads; body width 4.4 mm SOT403-1
SOT38-1
plastic dual in-line package; 16 leads (300 mil); long body
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
PINNING
Q0 to Q7
GND
Q7’
MR
SHCP
STCP
OE
DS
VCC
handbook, halfpage
SYMBOL
PIN
15, 1 to 7
8
9
10
11
12
13
14
16
DESCRIPTION
parallel data output
ground (0 V)
serial data output
master reset (active LOW)
shift register clock input
storage register clock input
output enable (active LOW)
serial data input
positive supply voltage
Q1
Q2
Q3
Q4
Q5
Q6
Q7
GND
1
2
3
4
5
6
7
8
16
VCC
15
14
Q0
DS
13
OE
12
STCP
11
SHCP
10
MR
9
Q7'
595
MLA001
handbook, halfpage
11
SHCP
14
DS
12
STCP
Q7'
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
9
15
1
2
3
4
5
6
7
MR
OE
10
13
MLA002
Fig.1 Pin configuration.
Fig.2 Logic symbol.
1998 Jun 04
3
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC/HCT595
handbook, full pagewidth
handbook, halfpage
OE
STCP
MR
SHCP
DS
13
12
10
11
14
EN3
C2
SRG8
C1/
R
1D
2D
3
MSA698
Fig.3 IEC logic symbol.
14
11
10
DS
SHCP
MR
8-STAGE SHIFT REGISTER
12
STCP
8-BIT STORAGE REGISTER
13
OE
3-STATE OUTPUTS
15
1
2
3
4
5
6
7
9
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q7'
Q7'
9
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
15
1
2
3
4
5
6
7
MLA003
Fig.4 Functional diagram.
1998 Jun 04
4
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC/HCT595
handbook, full pagewidth
STAGE 0
STAGES 1 TO 6
STAGE 7
D
Q
FF0
CP
R
D
Q
LATCH
CP
DS
SHCP
MR
STCP
OE
D
Q
Q7'
D
Q
FF7
CP
R
D
Q
LATCH
CP
Q0
Q1 Q2 Q3 Q4 Q5 Q6
Q7
MLA010
Fig.5 Logic diagram.
1998 Jun 04
5
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
FUNCTION TABLE
INPUTS
OUTPUTS
Q7’
L
L
L
Q6’
SHCP
STCP
X
X
X
X
X
X
X
OE
L
L
H
L
L
L
MR
L
L
L
H
H
H
DS
X
X
X
H
X
X
Product specification
74HC/HCT595
FUNCTON
QN
NC a LOW level on MR only affects the shift registers
L
Z
empty shift register loaded into storage register
shift register clear. Parallel outputs in high-impedance
OFF-state
NC logic high level shifted into shift register stage 0. Contents
of all shift register stages shifted through, e.g. previous
state of stage 6 (internal Q6’) appears on the serial output
(Q7’)
contents of shift register stages (internal Qn’) are
transferred to the storage register and parallel output
stages
contents of shift register shifted through. Previous
contents of the shift register is transferred to the storage
register and the parallel output stages.
NC
Qn’
Q6’
Qn’
Notes
1. H = HIGH voltage level; L = LOW voltage level
› = LOW-to-HIGH transition; fl = HIGH-to-LOW transition
Z = high-impedance OFF-state; NC = no change
X = don’t care.
1998 Jun 04
6
›
›
›
›
›
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC/HCT595
handbook, full pagewidth
SHCP
DS
STCP
MR
OE
Q0
Q1
Q6
Q7
Q7'
Fig.6 Timing diagram.
1998 Jun 04
7
high-impedance OFF-state
MLA005 - 1
Philips Semiconductors
8-bit serial-in/serial or parallel-out shift
register with output latches; 3-state
Product specification
74HC/HCT595
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see chapter “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: parallel outputs, bus driver, serial output, standard ICC category: MSI.
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF.
Tamb ( C)
- 40 to +85
SYMBOL PARAMETER
tPHL/tPLH
propagation delay
SHCP to Q7’
tPHL/tPLH
propagation delay
STCP to Qn
tPHL
propagation delay
MR to Q7’
tPZH/tPZL
tPHZ/tPLZ
tW
tW
tW
tsu
tsu
3-state output
enable time
OE to Qn
3-state output
disable time
OE to Qn
shift clock pulse
width HIGH or
LOW
storage clock
pulse width HIGH
or LOW
master reset
pulse width LOW
set-up time DS to
SHCP
set-up time SHCP
to STCP
min
75
15
13
75
15
13
75
15
13
50
10
9.0
75
15
13
1998 Jun 04
8
240
48
41
265
53
45
265
53
45
225
45
38
225
45
38
200
40
34
220
44
37
220
44
37
190
38
33
190
38
33
160
32
27
175
35
30
175
35
30
150
30
26
150
30
26
- 40 to +125
+25
typ max min max min max
52
19
15
55
20
16
47
17
14
47
17
14
41
15
12
17
6
5
11
4
3
17
6.0
5.0
11
4.0
3.0
22
8
7
95
19
16
95
19
16
95
19
16
65
13
11
95
19
16
110
22
19
110
22
19
110
22
19
75
15
13
110
22
19
TEST CONDITION
UNIT
VCC
(V)
WAVEFORMS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Fig.7
Fig.8
Fig.10
Fig.11
Fig.11
Fig.7
Fig.8
Fig.10
Fig.9
Fig.8
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
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