INTEGRAL IN74AC112

TECHNICAL DATA
IN74AC112
Dual J-K Flip-Flop
with Set and Reset
High-Speed Silicon-Gate CMOS
The IN74AC112 is identical in pinout to the LS/ALS112,
HC/HCT112. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LS/ALS
outputs.
Each flip-flop is negative-edge clocked and has active-low
asynchronous Set and Reset inputs.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• High Noise Immunity Characteristic of CMOS Devices
• Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74AC112N Plastic
IN74AC112D SOIC
TA = -40° to 85° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
PIN 16=VCC
PIN 8 = GND
Outputs
Set
Reset
Clock
J
K
Q
Q
L
H
X
X
X
H
L
H
L
X
X
X
L
H
X
X
*
L
L*
L
L
X
H
H
L
L
No Change
H
H
L
H
L
H
H
H
H
L
H
L
H
H
H
H
Toggle
H
H
L
X
X
No Change
H
H
H
X
X
No Change
H
H
X
X
No Change
* Both outputs will remain low 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
127
IN74AC112
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)
-0.5 to VCC +0.5
V
DC Output Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
DC Input Current, per Pin
±20
mA
IOUT
DC Output Sink/Source Current, per Pin
±50
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
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
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
TJ
Junction Temperature (PDIP)
TA
Operating Temperature, All Package Types
IOH
Output Current - High
IOL
Output Current - Low
tr, tf
*
Parameter
Input Rise and Fall Time
(except Schmitt Inputs)
*
Min
Max
Unit
2.0
6.0
V
0
VCC
V
140
°C
+85
°C
-24
mA
24
mA
150
40
25
ns/V
-40
VCC =3.0 V
VCC =4.5 V
VCC =5.5 V
0
0
0
VIN from 30% to 70% VCC
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.
128
IN74AC112
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND)
VCC
Guaranteed Limits
V
25 °C
-40°C to
85°C
Unit
VOUT=0.1 V or VCC-0.1 V
3.0
4.5
5.5
2.1
3.15
3.85
2.1
3.15
3.85
V
Maximum Low Level Input Voltage
VOUT=0.1 V or VCC-0.1 V
3.0
4.5
5.5
0.9
1.35
1.65
0.9
1.35
1.65
V
Minimum High-Level
Output Voltage
IOUT ≤ -50 µA
3.0
4.5
5.5
2.9
4.4
5.4
2.9
4.4
5.4
V
3.0
4.5
5.5
2.56
3.86
4.86
2.46
3.76
4.76
3.0
4.5
5.5
0.1
0.1
0.1
0.1
0.1
0.1
VIN=VIH or VIL
IOL=12 mA
IOL=24 mA
IOL=24 mA
3.0
4.5
5.5
0.36
0.36
0.36
0.44
0.44
0.44
Maximum Input
Leakage Current
VIN=VCC or GND
5.5
±0.1
±1.0
µA
IOLD
+Minimum Dynamic
Output Current
VOLD=1.65 V Max
5.5
75
mA
IOHD
+Minimum Dynamic
Output Current
VOHD=3.85 V Min
5.5
-75
mA
ICC
Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND
5.5
40
µA
Symbol
Parameter
VIH
Minimum High-Level
Input Voltage
VIL
VOH
Test Conditions
*
VIN=VIH or VIL
IOH=-12 mA
IOH=-24 mA
IOH=-24 mA
VOL
Maximum Low-Level
Output Voltage
IOUT ≤ 50 µA
V
*
IIN
4.0
*
All outputs loaded; thresholds on input associated with output under test.
+Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC
129
IN74AC112
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=3.0 ns)
VCC*
Symbol
Parameter
Guaranteed Limits
25 °C
V
Min
-40°C to
85°C
Max
Min
Unit
Max
fmax
Maximum Clock Frequency (Figure 1)
3.3
5.0
145
145
125
125
tPLH
Propagation Delay, Clock to Q or Q
(Figure 1)
3.3
5.0
1.0
1.0
16.0
13.0
1.0
1.0
17.0
13.5
ns
tPHL
Propagation Delay, Clock to Q or Q
(Figure 1)
3.3
5.0
1.0
1.0
16.0
13.0
1.0
1.0
16.5
13.5
ns
tPLH
Propagation Delay, Set or Reset to Q or Q
(Figure 2)
3.3
5.0
1.0
1.0
11.0
9.5
1.0
1.0
11.5
10.0
ns
tPHL
Propagation Delay, Set or Reset to Q or Q
(Figure 2)
3.3
5.0
1.0
1.0
11.0
9.5
1.0
1.0
11.5
10.0
ns
CIN
Maximum Input Capacitance
5.0
4.5
MHz
4.5
pF
Typical @25°C,VCC=5.0 V
CPD
Power Dissipation Capacitance
35
pF
Voltage Range 3.3 V is 3.3 V ±0.3 V
Voltage Range 5.0 V is 5.0 V ±0.5 V
*
TIMING REQUIREMENTS(CL=50pF,Input tr=tf=3.0 ns)
VCC*
Guaranteed Limits
Symbol
Parameter
V
25 °C
-40°C to
85°C
Unit
tsu
Minimum Setup Time, J or K to Clock (Figure
3)
3.3
5.0
6.5
4.5
7.5
5.0
ns
th
Minimum Hold Time, Clock to J or K (Figure
3)
3.3
5.0
0
0
0
0
ns
tw
Minimum Pulse Width, Clock (Figure 1)
3.3
5.0
6.0
5.0
6.5
5.5
ns
tw
Minimum Pulse Width,Set or Reset
(Figure 2)
3.3
5.0
6.5
5.0
7.5
5.5
ns
trec
Minimum Recovery Time, Set or Reset to
Clock (Figure 2)
3.3
5.0
0
0
0
0
ns
Voltage Range 3.3 V is 3.3 V ±0.3 V
Voltage Range 5.0 V is 5.0 V ±0.5 V
*
130
IN74AC112
Figure 1. Switching Waveform
Figure 2. Switching Waveform
Figure 3. Switching Waveform
EXPANDED LOGIC DIAGRAM
131