SLS HC74

SL74HC74
Dual D Flip-Flop with Set and Reset
High-Performance Silicon-Gate CMOS
The SL74HC74 is identical in pinout to the LS/ALS74. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This device consists of two D flip-flops with individual Set, Reset,
and Clock inputs. Information at a D-input is transferred to the
corresponding Q output on the next positive going edge of the clock
input. Both Q and Q outputs are available from each flip-flop. The Set
and Reset inputs are asynchronous.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC74N Plastic
SL74HC74D SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
PIN 14 =VCC
PIN 7 = GND
Outputs
Set
Reset
Clock
Data
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
X
*
H
H*
L
L
X
H
H
H
H
L
H
H
L
L
H
H
H
L
X
No Change
H
H
H
X
No Change
H
H
X
No Change
*Both outputs will remain high as long as Set
and Reset are low, but the output states are
unpredictable if Set and Reset go high
simultaneously.
X = don’t care
SLS
System Logic
Semiconductor
SL74HC74
MAXIMUM RATINGS *
Symbol
Parameter
Value
Unit
-0.5 to +7.0
V
VCC
DC Supply Voltage (Referenced to GND)
VIN
DC Input Voltage (Referenced to GND)
-1.5 to VCC +1.5
V
DC Output Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
DC Input Current, per Pin
±20
mA
DC Output Current, per Pin
±25
mA
ICC
DC Supply Current, VCC and GND Pins
±50
mA
PD
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mW
-65 to +150
°C
260
°C
VOUT
IIN
IOUT
Tstg
TL
Storage Temperature
Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VIN, VOUT
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
TA
Operating Temperature, All Package Types
tr, t f
Input Rise and Fall Time (Figure 1)
VCC =2.0 V
VCC =4.5 V
VCC =6.0 V
Min
Max
Unit
2.0
6.0
V
0
VCC
V
-55
+125
°C
0
0
0
1000
500
400
ns
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range
GND≤(VIN or VOUT)≤VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.
SLS
System Logic
Semiconductor
SL74HC74
DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND)
VCC
V
25 °C
to
-55°C
≤85
°C
≤125
°C
Unit
VOUT=0.1 V or VCC-0.1 V
IOUT≤ 20 µA
2.0
4.5
6.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
V
Maximum Low -Level
Input Voltage
VOUT=0.1 V or VCC-0.1 V
IOUT ≤ 20 µA
2.0
4.5
6.0
0.5
1.35
1.8
0.5
1.35
1.8
0.5
1.35
1.8
V
Minimum High-Level
Output Voltage
VIN=VIH or VIL
IOUT ≤ 20 µA
2.0
4.5
6.0
1.9
4.4
5.9
1.9
4.4
5.9
1.9
4.4
5.9
V
4.5
6.0
3.98
5.48
3.84
5.34
3.7
5.2
2.0
4.5
6.0
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
4.5
6.0
0.26
0.26
0.33
0.33
0.4
0.4
Symbol
Parameter
VIH
Minimum High-Level
Input Voltage
VIL
VOH
Test Conditions
VIN=VIH or VIL
IOUT ≤ 4.0 mA
IOUT ≤ 5.2 mA
VOL
Guaranteed Limit
Maximum Low-Level
Output Voltage
VIN=VIH or VIL
IOUT ≤ 20 µA
V
IIN
Maximum Input
Leakage Current
VIN=VCC or GND
6.0
±0.1
±1.0
±1.0
µA
ICC
Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND
IOUT=0µA
6.0
2.0
20
80
µA
SLS
System Logic
Semiconductor
SL74HC74
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input t r=t f=6.0 ns)
VCC
Symbol
Parameter
Guaranteed Limit
V
25 °C
to
-55°C
≤85°C
≤125°C
Unit
fmax
Maximum Clock Frequency (50% Duty Cycle)
(Figures 1 and 4)
2.0
4.5
6.0
6.0
30
35
4.8
24
28
4.0
20
24
MHz
tPLH, t PHL
Maximum Propagation Delay, Clock to Q or Q
(Figures 1 and 4)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
tPLH, t PHL
Maximum Propagation Delay, Set or Reset to Q
or Q (Figures 2 and 4)
2.0
4.5
6.0
105
21
18
130
26
22
160
32
27
ns
tTLH, t THL
Maximum Output Transition Time, Any Output
(Figures 1 and 4)
2.0
4.5
6.0
75
15
13
95
19
16
110
22
19
ns
-
10
10
10
pF
CIN
CPD
Maximum Input Capacitance
Power Dissipation Capacitance (Per Flip-Flop)
Typical @25°C,VCC=5.0 V
Used to determine the no-load dynamic power
consumption:
PD=CPDVCC2f+ICCVCC
39
pF
TIMING REQUIREMENTS (CL=50pF,Input t r=t f=6.0 ns)
VCC
Symbol
Parameter
Guaranteed Limit
V
25 °C to-55°C
≤85°C
≤125°C
Unit
tsu
Minimum Setup Time, Data to Clock
(Figure 3)
2.0
4.5
6.0
80
16
14
100
20
17
120
24
20
ns
th
Minimum Hold Time, Clock to Data
(Figure 3)
2.0
4.5
6.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
ns
trec
Minimum Recovery Time, Set or Reset
Inactive to Clock (Figure 2)
2.0
4.5
6.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
ns
tw
Minimum Pulse Width, Clock (Figure
1)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
ns
tw
Minimum Pulse Width, Set or Reset
(Figure 2)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
ns
tr, t f
Maximum Input Rise and Fall Times
(Figure 1)
2.0
4.5
6.0
1000
500
400
1000
500
400
1000
500
400
ns
SLS
System Logic
Semiconductor
SL74HC74
Figure 1. Switching Waveform
Figure 2. Switching Waveform
Figure 3. Switching Waveform
Figure 4.Test Circuit
EXPANDED LOGIC DIAGRAM
SLS
System Logic
Semiconductor