MOTOROLA SN74LS76AD, SN74LS76AN Datasheet
SN74LS76A
Dual JK Flip-Flop
with Set and Clear
The SN74LS76A offers individual J, K, Clock Pulse, Direct Set and
Direct Clear inputs. These dual flip-flops are designed so that when
the clock goes HIGH, the inputs are enabled and data will be accepted.
The Logic Level of the J and K inputs will perform according to the
Truth Table as long as minimum set-up times are observed. Input data
is transferred to the outputs on the HIGH-to-LOW clock transitions.
MODE SELECT – TRUTH TABLE
OPERATING
MODE
Set
Reset (Clear)
*Undetermined
Toggle
Load “0” (Reset)
Load “1” (Set)
Hold
* Both outputs will be HIGH while both SD and CD are LOW, but the output
states are unpredictable if S
H, h = HIGH Voltage Level
L, I = LOW Voltage Level
X = Immaterial
l, h (q) = Lower case letters indicate the state of the referenced input
i, h (q) = (or output) one setup time prior to the HIGH–to–LOW clock transition
S
D
L
H
L
H
H
H
H
INPUTS OUTPUTS
C
D
H
L
L
H
H
H
H
and CD go HIGH simultaneously.
D
J K Q Q
X
X
X
h
l
h
l
X
X
X
h
h
l
l
H
L
H
q
L
H
q
L
H
H
q
H
L
q
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LOW
POWER
SCHOTTKY
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
GUARANTEED OPERATING RANGES
Symbol Parameter Min Typ Max Unit
V
CC
T
I
OH
I
OL
Semiconductor Components Industries, LLC, 1999
December, 1999 – Rev. 6
Supply Voltage 4.75 5.0 5.25 V
Operating Ambient
A
T emperature Range
Output Current – High –0.4 mA
Output Current – Low 8.0 mA
0 25 70 °C
1 Publication Order Number:
ORDERING INFORMATION
Device Package Shipping
SN74LS76AN 16 Pin DIP 2000 Units/Box
SN74LS76AD 16 Pin
2500/Tape & Reel
SN74LS76A/D
SN74LS76A
VOLOutput LOW Voltage
V
V
V
IIHInput HIGH Current
PLH
Clock, Clear, Set to Output
C
L
F
V
V
CLEAR (C
LOGIC DIAGRAM
Q
)
D
J
Q
SET (S
K
16
1
4
)
D
LOGIC SYMBOL
S
D
KQ
CP
JQ
C
3 8
15
14
D
VCC = PIN 5
GND = PIN 13
CLOCK (CP
)
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol Parameter
V
IH
V
IL
V
IK
V
OH
Input HIGH Voltage 2.0 V
Input LOW Voltage
Input Clamp Diode Voltage –0.65 –1.5 V VCC = MIN, IIN = –18 mA
Output HIGH Voltage
p
J, K
Clear
Clock
p
J, K
Clear
Clock
I
IL
I
OS
I
CC
Input LOW Current
Short Circuit Current (Note 1) –20 –100 mA VCC = MAX
Power Supply Current 6.0 mA VCC = MAX
J, K
Clear, Clock
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T
= 25°C, VCC = 5.0 V)
A
Symbol Parameter
f
MAX
t
PLH
t
PHL
Maximum Clock Frequency 30 45 MHz
p
Min Typ Max
Unit Test Conditions
Guaranteed Input HIGH Voltage for
All Inputs
0.8
Guaranteed Input LOW Voltage for
V
All Inputs
2.7 3.5 V VCC = MIN, IOH = MAX, VIN = V
or VIL per Truth Table
0.25 0.4 V IOL = 4.0 mA
0.35 0.5 V IOL = 8.0 mA
20
60
µA VCC = MAX, VIN = 2.7 V
80
0.1
0.3
mA VCC = MAX, VIN = 7.0 V
0.4
–0.4
–0.8
mA VCC = MAX, VIN = 0.4 V
Limits
Min Typ Max
Unit Test Conditions
15 20 ns
15 20 ns
12
KQ
6
CP
9
JQ
VCC = VCC MIN,
IN
per Truth Table
VCC = 5.0 V
= 15 pF
15
C
=
72
S
D
11
C
D
10
IH
or
IL
IH
AC SETUP REQUIREMENTS (T
Symbol Parameter
t
W
t
W
t
s
t
h
= 25°C)
A
Limits
Min Typ Max
Unit Test Conditions
Clock Pulse Width High 20 ns
Clear Set Pulse Width 25 ns
Setup Time 20 ns
Hold Time 0 ns
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2
CC
= 5.0
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