MC74F574
OCTAL D-TYPE FLIP-FLOP
WITH 3-STATE OUTPUTS
The MC74F574 is a high-speed, low-power octal D-type flip-flop featuring
separate D-type inputs for each flip-flop and 3-state outputs for bus oriented
applications. A buffered clock (CP) and Output Enable (OE) are common to
all flip-flops.
This device is functionally identical to the F374 except for the pinouts.
•
Broadside Pinout Version of F374
•
Edge-Triggered D-Type Inputs
•
Buffered Positive Edge-Triggered Clock
•
3-State Outputs for Bus Oriented Applications
•
ESD Protection > 4000 Volts
OCTAL D-TYPE FLIP-FLOP
WITH 3-STATE OUTPUTS
FAST™ SCHOTTKY TTL
PIN ASSIGNMENT
VCC O0
20
19
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
CP
11
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
1
OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
20
1
DW SUFFIX
SOIC
CASE 751D-03
LOGIC SYMBOL
2
3
4
5
6
7
8
9
ORDERING INFORMATION
D0
11
CP
D1
D2
D3
D4
D5
D6
D7
MC74FXXXJ
Ceramic
MC74FXXXN
Plastic
MC74FXXXDW SOIC
1
OE
O0
19
O1
18
O2
17
O3
16
O4
15
O5
14
O6
13
O7
12
GUARANTEED OPERATING RANGES
Symbol
VCC
TA
IOH
IOL
DC Supply Voltage
Operating Ambient Temperature Range
Output Current — High
Output Current — Low
Parameter
74
74
74
74
Min
4.5
0
—
—
Typ
5.0
25
—
—
Max
5.5
70
3.0
24
Unit
V
°C
mA
mA
FAST AND LS TTL DATA
4-226
MC74F574
FUNCTION TABLE
Inputs
OE
L
L
L
H
H
CP
↑
↑
↑
↑
X
Dn
l
h
X
Dn
X
Internal
Register
L
H
NC
Dn
X
Outputs
Operating Mode
Q0–Q7
L
H
NC
Z
Z
Load and read register
Hold
Disable outputs
H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the Low-to-High clock transition
L = LOW voltage level
l = LOW voltage level one set-up time prior to the Low-to-High clock transition
NC = No change
X = Don’t care
Z = High impedance “off” state
↑
= Low-to-High clock transition
↑
= Not a Low-to-High clock transition
FUNCTIONAL DESCRIPTION
The MC74F574 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 individ-
ual D inputs that meet the setup and hold times requirements
on the LOW-to-HIGH Clock (CP) transition. With the Output
Enable (OE) LOW, the contents of the eight flip-flops are avail-
able at the outputs. When the 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.
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Limits
Symbol
VIH
VIL
VIK
VOH
VOL
IIH
IIL
IOZH
IOZL
IOS
ICCZ
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH Voltage
2.7
Output LOW Voltage
Input HIGH Current
—
Input LOW Current
Output Off Current — HIGH
Output Off Current — LOW
Output Short Circuit Current (Note 2)
Power Supply Current
(All Outputs OFF)
—
—
—
– 60
—
—
—
—
—
—
55
100
– 0.6
50
–50
–150
86
—
—
—
—
—
—
0.5
20
V
V
µA
mA
µA
µA
mA
mA
Min
2.0
—
—
2.4
Typ
—
—
—
—
Max
—
0.8
– 1.2
—
Unit
V
V
V
V
IOH = – 3.0 mA
IOL = 24 mA
Test Conditions
(Note 1)
Guaranteed Input HIGH Voltage
Guaranteed Input LOW Voltage
VCC = MIN, IIN = – 18 mA
VCC = MIN
VCC = 4.75 V
VCC = MIN
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 0.5 V
VCC = MAX, VOUT = 2.7 V
VCC = MAX, VOUT = 0.5 V
VCC = MAX, VOUT = 0 V
VCC = MAX
Dn – GND;
OE = 4.5 V
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
FAST AND LS TTL DATA
4-227
MC74F574
LOGIC DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
CP
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
CP
Q
D
Q
OE
O0
O1
O2
O3
O4
O5
O6
O7
AC ELECTRICAL CHARACTERISTICS
54 / 74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
Symbol
fMAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Maximum Clock Frequency
Propagation Delay
CP to On
Output Enable Time
Output Disable Time
Min
100
2.5
2.5
3.0
3.0
1.5
1.0
Typ
—
—
—
—
—
—
—
Max
—
8.5
8.5
9.0
9.0
5.5
5.5
74F
TA = 0°C to + 70°C
VCC = +5.0 V
±
10%
CL = 50 pF
Min
70
2.5
2.5
2.5
2.5
1.5
1.0
Max
—
8.5
8.5
10.0
10.0
6.5
6.5
Unit
MHz
ns
ns
ns
AC OPERATING CHARACTERISTICS
54 / 74F
TA = + 25°C
VCC = + 5.0 V
CL = 50 pF
Symbol
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
Parameter
Setup Time, HIGH or LOW
Dn to CP
Hold Time, HIGH to LOW
Dn to CP
CP Pulse Width
HIGH or LOW
Min
2.5
2.0
2.0
2.0
5.0
5.0
Typ
—
—
—
—
—
—
Max
—
—
—
—
—
—
Min
2.5
3.0
2.0
2.0
5.0
5.0
74F
TA = 0°C to + 70°C
VCC = +5.0 V
±
10%
CL = 50 pF
Typ
—
—
—
—
—
—
Max
—
—
—
—
—
—
Unit
ns
ns
ns
FAST AND LS TTL DATA
4-228
测试/测量
