MC74AC574, MC74ACT574
Octal D Flip−Flop with
3−State Outputs
The MC74AC574/74ACT574 is a high−speed, low power octal
flip−flop with a buffered common Clock (CP) and a buffered common
Output Enable (OE). The information presented to the D inputs is
stored in the flip−flops on the LOW−to−HIGH Clock (CP) transition.
The MC74AC574/74ACT574 is functionally identical to the
MC74AC374/74ACT374 except for the pinouts.
Features
http://onsemi.com
•
Inputs and Outputs on Opposite Sides of Package Allowing Easy
•
•
•
•
•
•
Interface with Microprocessors
Useful as Input or Output Port for Microprocessors
Functionally Identical to MC74AC374/74ACT374
3-State Outputs for Bus-Oriented Applications
Outputs Source/Sink 24 mA
′ACT574
Has TTL Compatible Inputs
Pb−Free Packages are Available
V
CC
20
O
0
19
O
1
18
O
2
17
O
3
16
O
4
15
O
5
14
O
6
13
O
7
12
CP
11
1
1
PDIP−20
N SUFFIX
CASE 738
SOIC−20W
DW SUFFIX
CASE 751D
1
TSSOP−20
DT SUFFIX
CASE 948E
1
OE
2
D
0
3
D
1
4
D
2
5
D
3
6
D
4
7
D
5
8
D
6
9
D
7
10
GND
1
SOEIAJ−20
M SUFFIX
CASE 967
Figure 1. Pinout: 20−Lead Packages Conductors
(Top View)
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 6 of this data sheet.
PIN ASSIGNMENT
PIN
D
0
−D
7
CP
OE
O
0
−O
7
FUNCTION
Data Inputs
Clock Pulse Input
3−State Output Enable Input
3−State Outputs
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
CP
OE
O
0
O
1
O
2
O
3
O
4
O
5
O
6
O
7
Figure 2. Logic Symbol
©
Semiconductor Components Industries, LLC, 2006
1
December, 2006 − Rev. 8
Publication Order Number:
MC74AC574/D
MC74AC574, MC74ACT574
FUNCTIONAL DESCRIPTION
FUNCTION TABLE
Inputs
OE
H
H
H
H
L
L
L
L
CP
H
H
D
L
H
L
H
L
H
L
H
Internal
Q
NC
NC
L
H
L
H
NC
NC
Outputs
Function
O
n
Z
Z
Z
Z
L
H
NC
NC
Hold
Hold
Load
Load
Data Available
Data Available
No Change in Data
No Change in Data
The MC74AC574/74ACT574 consists of eight edge-
triggered flip−flops with individual D−type inputs and
3−state true outputs. The buffered clock and buffered Output
Enable are common to all flip−flops. The eight flip−flops
will store the state of their individual D inputs that meet the
setup and hold time requirements on the LOW−to−HIGH
Clock (CP) transition. With the Output Enable (OE) LOW,
the contents of the eight flip−flops are available at the
outputs. When OE is HIGH, the outputs go to the high
impedance state. Operation of the OE input does not affect
the state of the flip−flops.
H
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
= LOW-to-HIGH Clock Transition
NC = No Change
D
0
CP
C
Q
D
C
Q
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
C
Q
D
OE
O
0
O
1
NOTE:
O
2
O
3
O
4
O
5
O
6
O
7
This diagram is provided only for the understanding of logic operations
and should not be used to estimate propagation delays.
Figure 3. Logic Diagram
MAXIMUM RATINGS
Symbol
V
CC
V
IN
V
OUT
I
IN
I
OUT
I
CC
T
stg
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Sink/Source Current, per Pin
DC V
CC
or GND Current per Output Pin
Storage Temperature
Value
−0.5 to +7.0
−0.5 to V
CC
+0.5
−0.5 to V
CC
+0.5
±20
±50
±50
−65 to +150
Unit
V
V
V
mA
mA
mA
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
http://onsemi.com
2
MC74AC574, MC74ACT574
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
IN
, V
OUT
Supply Voltage
DC Input Voltage, Output Voltage (Ref. to GND)
V
CC
@ 3.0 V
t
r
, t
f
Input Rise and Fall Time (Note 1)
′AC
Devices except Schmitt Inputs
Input Rise and Fall Time (Note 2)
′ACT
Devices except Schmitt Inputs
Junction Temperature (PDIP)
Operating Ambient Temperature Range
Output Current − High
Output Current − Low
V
CC
@ 4.5 V
V
CC
@ 5.5 V
t
r
, t
f
T
J
T
A
I
OH
I
OL
V
CC
@ 4.5 V
V
CC
@ 5.5 V
Parameter
′AC
′ACT
Min
2.0
4.5
0
−
−
−
−
−
−
−40
−
−
Typ
5.0
5.0
−
150
40
25
10
8.0
−
25
−
−
Max
6.0
5.5
V
CC
−
−
−
−
−
140
85
−24
24
ns/V
°C
°C
mA
mA
ns/V
V
V
Unit
1. V
IN
from 30% to 70% V
CC
; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. V
IN
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
DC CHARACTERISTICS
74AC
Symbol
Parameter
V
CC
(V)
3.0
4.5
5.5
V
IL
Maximum Low Level
Input Voltage
3.0
4.5
5.5
V
OH
Minimum High Level
Output Voltage
3.0
4.5
5.5
3.0
4.5
5.5
V
OL
Maximum Low Level
Output Voltage
3.0
4.5
5.5
3.0
4.5
5.5
I
IN
I
OLD
I
OHD
I
CC
Maximum Input
Leakage Current
†Minimum Dynamic
Output Current
Maximum Quiescent Supply Current
5.5
5.5
5.5
5.5
T
A
= +25°C
Typ
V
IH
Minimum High Level
Input Voltage
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
−
−
−
0.002
0.001
0.001
−
−
−
−
−
−
−
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.56
3.86
4.86
0.1
0.1
0.1
0.36
0.36
0.36
±0.1
−
−
8.0
74AC
T
A
= −40°C to +85°C
Guaranteed Limits
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
*V
IN
= V
IL
or V
IH
2.46
3.76
4.76
0.1
0.1
0.1
*V
IN
= V
IL
or V
IH
0.44
0.44
0.44
±1.0
75
−75
80
mA
mA
mA
mA
V
12 mA
I
OL
24 mA
24 mA
V
I
= V
CC
, GND
V
OLD
= 1.65 V Max
V
OHD
= 3.85 V Min
V
IN
= V
CC
or GND
V
V
−12 mA
I
OH
−24 mA
−24 mA
I
OUT
= 50
mA
V
I
OUT
= −50
mA
V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
Unit
Conditions
* All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE:
Note: I
IN
and I
CC
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
CC
.
http://onsemi.com
3
MC74AC574, MC74ACT574
AC CHARACTERISTICS
(For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74AC
Symbol
Parameter
V
CC
*
(V)
Min
f
max
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum Clock
Frequency
Propagation Delay
CP to O
n
Propagation Delay
CP to O
n
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
75
95
3.5
2.0
3.5
2.0
2.5
2.0
3.0
1.5
4.0
2.0
2.0
1.5
T
A
= +25°C
C
L
= 50 pF
Typ
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Max
−
−
13.5
9.5
12
8.5
11
8.5
10.5
8.0
12
9.5
9.0
7.5
74AC
T
A
= −40°C to +85°C
C
L
= 50 pF
Min
60
85
3.5
2.0
3.5
2.0
2.5
2.0
3.5
2.0
4.5
2.0
2.5
1.5
Max
−
−
15
11
13.5
9.5
12
9.0
11.5
9.0
13
10.5
10
8.5
MHz
ns
ns
ns
ns
ns
ns
3−3
3−6
3−6
3−7
3−8
3−7
3−8
Unit
Fig.
No.
* Voltage Range 3.3 V is 3.3 V
±0.3
V.
Voltage Range 5.0 V is 5.0 V
±0.5
V.
AC OPERATING REQUIREMENTS
74AC
Symbol
Parameter
V
CC
*
(V)
T
A
= +25°C
C
L
= 50 pF
Typ
t
s
t
h
t
w
Setup Time, HIGH or LOW
D
n
to CP
Hold Time, HIGH or LOW
D
n
to CP
3.3
5.0
3.3
5.0
3.3
5.0
−
−
−
−
−
−
74AC
T
A
= −40°C to +85°C
C
L
= 50 pF
Unit
Fig.
No.
Guaranteed Minimum
2.5
1.5
1.5
1.5
6.0
4.0
3.0
2.0
1.5
1.5
7.0
5.0
ns
ns
ns
3−9
3−9
3−6
CP Pulse Width
HIGH or LOW
*Voltage Range 3.3 V is 3.3 V
±0.3
V.
Voltage Range 5.0 V is 5.0 V
±0.5
V.
http://onsemi.com
4
MC74AC574, MC74ACT574
DC CHARACTERISTICS
74ACT
Symbol
Parameter
V
CC
(V)
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
V
OL
Maximum Low Level
Output Voltage
4.5
5.5
4.5
5.5
I
IN
DI
CCT
I
OZ
Maximum Input
Leakage Current
Additional Max. I
CC
/Input
Maximum
3-State
Current
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
5.5
5.5
T
A
= +25°C
Typ
V
IH
V
IL
V
OH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
1.5
1.5
1.5
1.5
4.49
5.49
−
−
0.001
0.001
−
−
−
0.6
−
±0.5
−
−
8.0
2.0
2.0
0.8
0.8
4.4
5.4
3.86
4.86
0.1
0.1
0.36
0.36
±0.1
74ACT
T
A
= −40°C to +85°C
Guaranteed Limits
2.0
2.0
0.8
0.8
4.4
5.4
3.76
4.76
0.1
0.1
0.44
0.44
±1.0
1.5
±5.0
75
−75
80
V
V
V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
I
OUT
= −50
mA
*V
IN
= V
IL
or V
IH
I
OH
−24 mA
−24 mA
I
OUT
= 50
mA
*V
IN
= V
IL
or V
IH
24 mA
I
OL
24 mA
V
I
= V
CC
, GND
V
I
= V
CC
− 2.1 V
V
I
(OE) = V
IL
, V
IH
V
I
= V
CC
, GND
V
O
= V
CC
, GND
V
OLD
= 1.65 V Max
V
OHD
= 3.85 V Min
V
IN
= V
CC
or GND
Unit
Conditions
V
V
V
mA
mA
mA
mA
mA
mA
I
OLD
I
OHD
I
CC
5.5
5.5
5.5
−
−
−
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
AC CHARACTERISTICS
(For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74ACT
Symbol
Parameter
V
CC
*
(V)
Min
f
max
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum Clock
Frequency
Propagation Delay
CP to O
n
Propagation Delay
CP to O
n
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
5.0
5.0
5.0
5.0
5.0
5.0
5.0
100
2.5
2.0
2.0
2.0
2.0
2.0
T
A
= +25°C
C
L
= 50 pF
Typ
−
−
−
−
−
−
−
Max
−
11
10
9.5
9.0
10.5
8.5
74ACT
T
A
= −40°C to +85°C
C
L
= 50 pF
Min
85
2.0
1.5
1.5
1.5
1.5
1.5
Max
−
12
11
10
10
11.5
9.0
ns
ns
ns
ns
ns
ns
ns
3−3
3−6
3−6
3−7
3−8
3−7
3−8
Unit
Fig.
No.
*Voltage Range 5.0 V is 5.0 V
±0.5
V.
http://onsemi.com
5
