74F74SJ

© 2000 Fairchild Semiconductor Corporation DS009469 www.fairchildsemi.com
April 1988
Revised September 2000
74F74 Dual D-Type Positive Edge-Triggered Flip-Flop
74F74
Dual D-Type Positive Edge-Triggered Flip-Flop
General Description
The F74 is a dual D-type flip-flop with Direct Clear and Set
inputs and complementary (Q, Q
) outputs. Information at
the input is transferred to the outputs on the positive edge
of the clock pulse. Clock triggering occurs at a voltage level
of the clock pulse and is not directly related to the transition
time of the positive-going pulse. After the Clock Pulse input
threshold voltage has been passed, the Data input is
locked out and information present will not be transferred to
the outputs until the next rising edge of the Clock Pulse
input.
Asynchronous Inputs:
LOW input to S
D
sets Q to HIGH level
LOW input to C
D
sets Q to LOW level
Clear and Set are independent of clock
Simultaneous LOW on C
D
and S
D
makes both Q and Q HIGH
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Order Number Package Number Package Description
74F74SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
74F74SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F74PC N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
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74F74
Unit Loading/Fan Out
Truth Table
H (h) = HIGH Voltage Level
L (l) = LOW Voltage Level
X = Immaterial
Q
0
= Previous Q (Q) before LOW-to-HIGH Clock Transition
Lower case letters indicate the state of the referenced input or output one setup time prior to the LOW-to-HIGH clock transition.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
Pin Names Description
U.L. Input I
IH
/I
IL
HIGH/LOW Output I
OH
/I
OL
D
1
, D
2
Data Inputs 1.0/1.0 20 µA/0.6 mA
CP
1
, CP
2
Clock Pulse Inputs (Active Rising Edge) 1.0/1.0 20 µA/0.6 mA
C
D1
, C
D2
Direct Clear Inputs (Active LOW) 1.0/3.0 20 µA/1.8 mA
S
D1
, S
D2
Direct Set Inputs (Active LOW) 1.0/3.0 20 µA/1.8 mA
Q
1
, Q
1
, Q
2
, Q
2
Outputs 50/33.3 1 mA/20 mA
Inputs Outputs
S
D
C
D
CP D Q Q
LHXXHL
HLXXLH
LLXXHH
HH
hH L
HH
lLH
HHLXQ
0
Q
0
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74F74
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Absolute maximum ratings are values beyond which the device
may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 2: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Storage Temperature 65°C to +150°C
Ambient Temperature under Bias
55°C to +125°C
Junction Temperature under Bias
55°C to +150°C
V
CC
Pin Potential to Ground Pin 0.5V to +7.0V
Input Voltage (Note 2)
0.5V to +7.0V
Input Current (Note 2)
30 mA to +5.0 mA
Voltage Applied to Output
in HIGH State (with V
CC
= 0V)
Standard Output
0.5V to V
CC
3-STATE Output 0.5V to +5.5V
Current Applied to Output
in LOW State (Max) twice the rated I
OL
(mA)
ESD Last Passing Voltage (Min) 4000V
Free Air Ambient Temperature 0
°C to +70°C
Supply Voltage
+4.5V to +5.5V
Symbol Parameter Min Typ Max Units
V
CC
Conditions
V
IH
Input HIGH Voltage 2.0 V Recognized as a HIGH Signal
V
IL
Input LOW Voltage 0.8 V Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage 1.2 V Min I
IN
= 18 mA
V
OH
Output HIGH 10% V
CC
2.5
VMin
I
OH
= 1 mA
Voltage 5% V
CC
2.7 I
OH
= 1 mA
V
OL
Output LOW 10% V
CC
0.5 V Min I
OL
= 20 mA
Voltage
I
IH
Input HIGH
5.0 µAMaxV
IN
= 2.7V
Current
I
BVI
Input HIGH Current
7.0 µAMaxV
IN
= 7.0V
Breakdown Test
I
CEX
Output HIGH
50 µAMaxV
OUT
= V
CC
Leakage Current
V
ID
Input Leakage
4.75 V 0.0
I
ID
= 1.9 µA
Test All Other Pins Grounded
I
OD
Output Leakage
3.75 µA0.0
V
IOD
= 150 mV
Circuit Current All Other Pins Grounded
I
IL
Input LOW Current 0.6
mA Max
V
IN
= 0.5V (D, CP)
1.8 V
IN
= 0.5V (C
D
, S
D
)
I
OS
Output Short-Circuit Current 60 150 mA Max V
OUT
= 0V
I
CC
Power Supply Current 10.5 16.0 mA Max

74F74SJ

Mfr. #:
Manufacturer:
ON Semiconductor / Fairchild
Description:
Flip Flops Dl D-Type Flip-Flop
Lifecycle:
New from this manufacturer.
Delivery:
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