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MM74HCT74
Dual D-Type Flip-Flop with Preset and Clear
Features
General Description
■ Typical propagation delay: 20ns
The MM74HCT74 utilizes advanced silicon-gate CMOS
technology to achieve operation speeds similar to the
equivalent LS-TTL part. It possesses the high noise
immunity and low power consumption of standard
CMOS integrated circuits, along with the ability to drive
10 LS-TTL loads.
■ Low quiescent current: 40µA maximum (74HCT Series)
■ Low input current: 1µA maximum
■ Fanout of 10 LS-TTL loads
■ Meta-stable hardened
This flip-flop has independent data, preset, clear, and
clock inputs and Q and Q outputs. The logic level
present at the data input is transferred to the output
during the positive-going transition of the clock pulse.
Preset and clear are independent of the clock and
accomplished by a low level at the appropriate input.
The 74HCT logic family is functionally and pin-out
compatible with the standard 74LS logic family. All inputs
are protected from damage due to static discharge by
internal diode clamps to VCC and ground.
MM74HCT devices are intended to interface between
TTL and NMOS components and standard CMOS
devices. These parts are also plug-in replacements for
LS-TTL devices and can be used to reduce power
consumption in existing designs.
Ordering Information
Package
Number
Package Description
MM74HCT74M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
MM74HCT74SJ
M14D
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Order Number
MM74HCT74MTC
MM74HCT74N
MTC14
N14A
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1984 Fairchild Semiconductor Corporation
MM74HCT74 Rev. 1.4.0
www.fairchildsemi.com
MM74HCT74 — Dual D-Type Flip-Flop with Preset and Clear
March 2008
Truth Table
Pin Assignments for DIP, SOIC, SOP and TSSOP
Inputs
Outputs
PR
CLR
CLK
D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
H(1)
L
L
X
X
H(1)
H
H
↑
H
H
L
H
H
↑
L
L
H
H
H
L
X
Q0
Q0
Q0 = the level of Q before the indicated input conditions
were established.
Note:
1. This configuration is nonstable; that is, it will not persist
when preset and clear inputs return to their inactive
(HIGH) level.
Logic Diagram
©1984 Fairchild Semiconductor Corporation
MM74HCT74 Rev. 1.4.0
www.fairchildsemi.com
2
MM74HCT74 — Dual D-Type Flip-Flop with Preset and Clear
Connection Diagram
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Rating
VCC
Supply Voltage
VIN
DC Input Voltage
–1.5 to VCC +1.5V
DC Output Voltage
–0.5 to VCC +0.5V
VOUT
IIK, IOK
–0.5 to +7.0V
Clamp Diode Current
±20mA
IOUT
DC Output Current, per pin
±25mA
ICC
DC VCC or GND Current, per pin
±50mA
TSTG
PD
TL
Storage Temperature Range
–65°C to +150°C
Power Dissipation
Note 3
S.O. Package only
600mW
500mW
Lead Temperature (Soldering 10 seconds)
260°C
Notes:
2. Unless otherwise specified all voltages are referenced to ground.
3. Power Dissipation temperature derating — plastic “N” package: –12 mW/°C from 65°C to 85°C.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
VCC
VIN, VOUT
TA
tr , tf
Parameter
Supply Voltage
DC Input or Output Voltage
Operating Temperature Range
Input Rise or Fall Times
©1984 Fairchild Semiconductor Corporation
MM74HCT74 Rev. 1.4.0
Min.
Max.
Units
4.5
5.5
V
0
VCC
V
–40
+85
°C
500
ns
www.fairchildsemi.com
3
MM74HCT74 — Dual D-Type Flip-Flop with Preset and Clear
Absolute Maximum Ratings(2)
VCC = 5V ±10% (unless otherwise specified).
TA =
–40°C to
85°C
25°C
Symbol
Parameter
Conditions
Typ.
–55°C to
125°C
Guaranteed Limits
Units
VIH
Minimum HIGH Level
Input Voltage
2.0
2.0
2.0
V
VIL
Maximum LOW Level
Input Voltage
0.8
0.8
0.8
V
VOH
Minimum HIGH Level
Output Voltage
V
VOL
Maximum LOW Level
Voltage
VIN = VIH or VIL, |IOUT| = 20µA
VCC
VCC – 0.1
VCC – 0.1
VCC – 0.1
VIN = VIH or VIL, |IOUT| = 4.0mA,
VCC = 4.5V
4.2
3.98
3.84
3.7
VIN = VIH or VIL, |IOUT| = 4.8mA,
VCC = 5.5V
5.2
4.98
4.84
4.7
0
0.1
0.1
0.1
VIN = VIH or VIL, |IOUT| = 4.0mA,
VCC = 4.5V
0.2
0.26
0.33
0.4
VIN = VIH or VIL, |IOUT| = 4.8mA,
VCC = 5.5V
0.2
0.26
0.33
0.4
VIN = VIH or VIL, |IOUT| = 20µA
V
IIN
Maximum Input
Current
VIN = VCC or GND, VIH or VIL
±0.5
±0.5
±1.0
µA
ICC
Maximum Quiescent
Supply Current
VIN = VCC or GND, IOUT = 0µA
2.0
20
80
µA
VIN = 2.4V or 0.5V
0.3
0.4
0.5
mA
Typ.
Guaranteed
Limit
Units
(4)
Note:
4. This is measured per pin. All other inputs are held at VCC Ground.
AC Electrical Characteristics
VCC = 5V, TA = 25°C, CL = 15 pF, tr = tf = 6ns.
Symbol
Parameter
fMAX
Maximum Operating Frequency from Clock to
Q or Q
50
30
MHz
tPHL, tPLH Maximum Propagation Delay Clock to Q or Q
18
30
ns
tPHL, tPLH Maximum Propagation Delay from Preset or
Clear to Q or Q
18
30
ns
Minimum Removal Time, Preset or Clear to
Clock
20
ns
tS
Minimum Setup Time Data to Clock
20
ns
tH
Minimum Hold Time Clock to Data
–3
0
ns
tW
Minimum Pulse Width Clock, Preset or Clear
8
16
ns
tREM
©1984 Fairchild Semiconductor Corporation
MM74HCT74 Rev. 1.4.0
Conditions
www.fairchildsemi.com
4
MM74HCT74 — Dual D-Type Flip-Flop with Preset and Clear
DC Electrical Characteristics
VCC = 5.0V ± 10%, CL = 50 pF, tr = tf = 6ns unless otherwise specified.
TA = 25°C
Symbol
fMAX
Parameter
Conditions
Typ.
Maximum Operating Frequency
TA = –40° to +85°C
Guaranteed Limits
Units
27
21
MHz
tPHL, tPLH
Maximum Propagation Delay from
Clock to Q or Q
21
35
44
ns
tPHL, tPLH
Maximum Propagation Delay from
Preset or Clear to Q or Q
21
35
44
ns
tREM
Minimum Removal Time Preset or
Clear to Clock
20
25
ns
tS
Minimum Setup Time Data to
Clock
20
25
ns
tH
Minimum Hold Time Clock to Data
–3
0
0
ns
tW
Minimum Pulse Width Clock,
Preset or Clear
9
16
20
ns
tr, tf
Maximum Clock Input Rise and
Fall Time
500
500
ns
tTHL, tTLH
Maximum Output Rise and Fall
Time
15
19
ns
CPD
Power Dissipation Capacitance(5)
CIN
Maximum Input Capacitance
(per flip-flop)
10
5
pF
10
10
pF
Note:
5. CPD determines the no load dynamic power consumption, PD = CPD VCC2 f + ICC VCC, and the no load dynamic
current consumption, IS = CPD VCC f + ICC .
©1984 Fairchild Semiconductor Corporation
MM74HCT74 Rev. 1.4.0
www.fairchildsemi.com
5
MM74HCT74 — Dual D-Type Flip-Flop with Preset and Clear
AC Electrical Characteristics
0.65
A
0.43TYP
14
8
B
6.4
6.10
3.2
1
PIN#1 IDENT
0.2 C B A
7
TOP VIEW
1.65
ALL LEAD TIPS
0.45
RECOMMENDED LAND PATTERN
1.2 MAX
0.30
0.19
ALL LEAD TIPS
0.1 C
0.65
SEE DETAIL A
0.90+0.15
-0.10
0.13
A B
0.20
0.09
C
C
FRONT VIEW
0.09 MIN
NOTES:
A. CONFORMS TO JEDEC REGISTRATION MO-153,
VARIATION AB, REF NOTE 6
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS ARE EXCLUSIVE OF BURRS,
MOLD FLASH, AND TIE BAR EXTRUSIONS
D. DIMENSIONING AND TOLERANCES PER ANSI
Y14.5M, 2009.
E. LANDPATTERN STANDARD: SOP65P640X110-14M.
F. DRAWING FILE NAME: MKT-MTC14rev7.
GAGE PLANE
0.09 MIN
1.00
0.25
SEATING PLANE
DETAIL A
8.75
8.50
A
7.62
14
8
14
B
0.65
8
4.00
3.80
6.00
1
PIN #1
IDENT.
1.27
(0.33)
TOP VIEW
5.60
7
0.51
0.35
0.25 M C B A
1.75 MAX
1.70
1
1.27
LAND PATTERN RECOMMENDATION
A
C
1.50
1.25
FRONT VIEW
0.25
0.10
0.50
0.25 x 45
R0.10
GAGE
PLANE
R0.10
0.36
8°
0°
0.90
0.50
(1.04)
0.10 C
0.25
0.19
SIDE VIEW
NOTES:
A. CONFORMS TO JEDEC MS-012,
VARIATION AB, ISSUE C
B. ALL DIMENSIONS ARE IN MILLIMETERS
C. DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS
D. LAND PATTERN STANDARD:
SOIC127P600X145-14M
E. CONFORMS TO ASME Y14.5M, 2009
D. DRAWING FILENAME: MKT-M14Arev14
SEATING PLANE
DETAIL A
SCALE 16 : 1
7
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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