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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
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is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
Revised May 2005
MM74HCT373 • MM74HCT374
3-STATE Octal D-Type Latch •
3-STATE Octal D-Type Flip-Flop
General Description
Features
The
MM74HCT373
octal
D-type
latches
and
MM74HCT374 Octal D-type flip flops advanced silicon-gate
CMOS technology, which provides the inherent benefits of
low power consumption and wide power supply range, but
are LS-TTL input and output characteristic & pin-out compatible. The 3-STATE outputs are capable of driving 15 LSTTL loads. All inputs are protected from damage due to
static discharge by internal diodes to VCC and ground.
■ TTL input characteristic compatible
■ Typical propagation delay: 20 ns
■ Low input current: 1 PA maximum
■ Low quiescent current: 80 PA maximum
■ Compatible with bus-oriented systems
■ Output drive capability: 15 LS-TTL loads
When the MM74HCT373 LATCH ENABLE input is HIGH,
the Q outputs will follow the D inputs. When the LATCH
ENABLE goes LOW, data at the D inputs will be retained at
the outputs until LATCH ENABLE returns HIGH again.
When a high logic level is applied to the OUTPUT CONTROL input, all outputs go to a high impedance state,
regardless of what signals are present at the other inputs
and the state of the storage elements.
The MM74HCT374 are positive edge triggered flip-flops.
Data at the D inputs, meeting the setup and hold time
requirements, are transferred to the Q outputs on positive
going transitions of the CLOCK (CK) input. When a high
logic level is applied to the OUTPUT CONTROL (OC)
input, all outputs go to a high impedance state, regardless
of what signals are present at the other inputs and the state
of the storage elements.
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 Code:
Order Number
Package Number
MM74HCT373WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HCT373SJ
MM74HCT373MTC
MM74HCT373N
MTC20
N20A
Package Descriptions
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
MM74HCT374WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74HCT374SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HCT374MTC
MM74HCT374N
MTC20
N20A
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
© 2005 Fairchild Semiconductor Corporation
DS005367
www.fairchildsemi.com
MM74HCT373 • MM74HCT374 3-STATE Octal D-Type Latch • 3-STATE Octal D-Type Flip-Flop
February 1984
MM74HCT373 • MM74HCT374
Connection Diagrams
Top View
MM74HCT374
Top View
MM74HCT373
Truth Tables
MM74HCT373
Output
LE
MM74HCT374
Data
Control
373
Output
Output
Control
Clock
Data
Output
H
L
L
(374)
L
H
H
H
L
L
H
L
L
L
n
n
L
L
X
Q0
L
L
X
Q0
H
X
X
Z
H
X
X
Z
H HIGH Level
L LOW Level
Q0 Level of output before steady-state input conditions were established.
Z High Impedance
www.fairchildsemi.com
H
H HIGH Level
L LOW Level
X Don’t Care
n Transition from LOW-to-HIGH
Z High Impedance State
The level of the output before steady state input conditions were
Q0
established.
2
MM74HCT373 • MM74HCT374
Logic Diagrams
MM74HCT373
MM74HCT374
3
www.fairchildsemi.com
MM74HCT373 • MM74HCT374
Absolute Maximum Ratings(Note 1)
Recommended Operating
Conditions
(Note 2)
0.5 to 7.0V
1.5 to VCC 1.5V
0.5 to VCC 0.5V
r20 mA
r35 mA
r70 mA
65qC to 150qC
Supply Voltage (VCC)
DC Input Voltage (VIN)
DC Output Voltage (VOUT)
Clamp Diode Current (IIK, IOK)
DC Output Current, per pin (IOUT)
DC VCC or GND Current, per pin (ICC)
Storage Temperature Range (TSTG)
Supply Voltage (VCC)
DC Input or Output Voltage
600 mW
S.O. Package only
500 mW
Max
4.5
5.5
Units
V
0
VCC
V
40
85
qC
500
ns
(VIN, VOUT)
Operating Temperature Range (TA)
Input Rise or Fall Times
(tr, tf)
Power Dissipation (PD)
(Note 3)
Min
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Note 2: Unless otherwise specified all voltages are referenced to ground.
Note 3: Power Dissipation temperature derating — plastic “N” package:
12 mW/qC from 65qC to 85qC.
Lead Temperature (TL)
260qC
(Soldering 10 seconds)
DC Electrical Characteristics
VCC
5V r 10% (unless otherwise specified)
Symbol
VIH
Parameter
TA
Conditions
Minimum HIGH Level
Input Voltage
VIL
Maximum LOW Level
Input Voltage
VOH
TA
55 to 125qC
Units
2.0
2.0
2.0
V
0.8
0.8
0.8
V
VIN
|IOUT|
VIH or VIL
20 PA
VCC
VCC 0.1
VCC 0.1
VCC 0.1
V
|IOUT|
6.0 mA, VCC
4.5V
4.2
3.98
3.84
3.7
V
7.2 mA, VCC
5.5V
5.7
4.98
4.84
4.7
V
Maximum LOW Level
VIN
VIH or VIL
|IOUT|
20 PA
0
0.1
0.1
0.1
V
|IOUT|
6.0 mA, VCC
4.5V
0.2
0.26
0.33
0.4
V
7.2 mA, VCC
5.5V
0.2
0.26
0.33
0.4
V
r0.1
r1.0
r1.0
PA
r0.5
r5.0
r10
PA
8.0
80
160
PA
1.0
1.3
1.5
mA
|IOUT|
IOZ
40 to 85qC
Guaranteed Limits
Output Voltage
Voltage
IIN
TA
Minimum HIGH Level
|IOUT|
VOL
25qC
Typ
Maximum Input
VIN
VCC or GND,
Current
VIH or VIL
Maximum 3-STATE
VOUT
Output Leakage
Enable
VCC or GND
VIH or VIL
Current
ICC
Maximum Quiescent
VIN
Supply Current
IOUT
VIN
VCC or GND
0 PA
2.4V or 0.5V (Note 4)
Note 4: Measured per pin. All others tied to VCC or ground.
www.fairchildsemi.com
4
MM74HCT373: VCC
5.0V, tr
Symbol
tPHL, tPLH
tf
6 ns TA 25qC (unless otherwise specified)
Parameter
Conditions
Maximum Propagation Delay
tPHZ, tPLZ
Units
45 pF
18
25
ns
CL
45 pF
21
30
ns
Maximum Enable Propagation Delay
CL
45 pF
Control to Output
RL
1 k:
20
28
ns
Maximum Disable Propagation Delay
CL
5 pF
Control to Output
RL
1 k:
18
25
ns
Maximum Propagation Delay
Latch Enable to Output
tPZH, tPZL
Limit
CL
Data to Output
tPHL, tPLH
Guaranteed
Typ
tW
Minimum Clock Pulse Width
16
ns
tS
Minimum Setup Time Data to Clock
5
ns
tH
Minimum Hold Time Clock to Data
10
ns
AC Electrical Characteristics
MM74HCT373: VCC
5.0V r 10%, tr
Symbol
Parameter
tf 6 ns (unless otherwise specified)
TA 25qC
Conditions
TA 40 to 85qC TA 55 to 125qC
Typ
tPHL, tPLH Maximum Propagation
Delay Data to Output
tPHL, tPLH Maximum Propagation Delay
Latch Enable to Output
tPZH, tPZL Maximum Enable Propagation
Delay Control to Output
tPHZ, tPLZ Maximum Disable Propagation
Delay Control to Output
tTHL, tTLH Maximum Output Rise
Units
Guaranteed Limits
CL
50 pF
22
30
37
45
CL
150 pF
30
40
50
60
ns
ns
CL
50 pF
25
35
44
53
ns
CL
150 pF
32
45
56
68
ns
CL
50 pF
21
30
37
45
ns
30
40
50
60
ns
21
30
37
45
ns
8
12
15
18
ns
ns
CL
150 pF
RL
1 k:
CL
50 pF
RL
1 k:
CL
50 pF
and Fall Time
tW
Minimum Clock Pulse Width
16
20
24
tS
Minimum Setup Time Data to Clock
5
6
8
ns
tH
Minimum Hold Time Clock to Data
10
13
20
ns
CIN
Maximum Input Capacitance
10
10
10
pF
COUT
Maximum Output Capacitance
20
20
20
pF
CPD
Power Dissipation Capacitance
OC
VCC
5
pF
(Note 5)
OC
GND
52
pF
Note 5: CPD determines the no load dynamic power consumption, PD
IS CPD VCC f ICC.
CPD VCC2 f ICC VCC, and the no load dynamic current consumption,
5
www.fairchildsemi.com
MM74HCT373 • MM74HCT374
AC Electrical Characteristics
MM74HCT373 • MM74HCT374
AC Electrical Characteristics
MM74HCT374: VCC
5.0V, tr
Symbol
tf
6 ns TA 25qC (unless otherwise specified)
Parameter
fMAX
Maximum Clock Frequency
tPHL, tPLH
Maximum Propagation Delay
Conditions
Typ
Guaranteed
Limit
Units
50
30
MHz
CL
45 pF
20
32
ns
Maximum Enable Propagation Delay
CL
45 pF
19
28
ns
Control to Output
RL
1 k:
Maximum Disable Propagation Delay
CL
5 pF
17
25
ns
Control to Output
RL
1 k:
to Output
tPZH, tPZL
tPHZ, tPLZ
tW
Minimum Clock Pulse Width
20
ns
tS
Minimum Setup Time Data to Clock
5
ns
tH
Minimum Hold Time Clock to Data
16
ns
AC Electrical Characteristics
MM74HCT374: VCC
5.0V r 10%, tr
Symbol
Parameter
fMAX
tf 6 ns (unless otherwise specified)
TA
Conditions
Maximum Clock Frequency
tPHL, tPLH Maximum Propagation Delay
to Output
tPZH, tPZL Maximum Enable Propagation
Delay Control to Output
tPHZ, tPLZ Maximum Disable Propagation
Delay Control to Output
tTHL, tTLH Maximum Output Rise
25qC
TA
Typ
40 to 85qC TA 55 to 125qC
Guaranteed Limits
Units
30
24
20
MHz
CL
50 pF
22
36
45
48
ns
CL
150 pF
30
46
57
69
ns
CL
50 pF
21
30
37
45
ns
CL
150 pF
30
40
50
60
ns
RL
1 k:
21
30
37
45
ns
8
12
15
18
ns
CL
50 pF
RL
1 k:
CL
50 pF
and Fall Time
tW
Minimum Clock Pulse Width
16
20
24
ns
tS
Minimum Setup Time Data to Clock
20
25
30
ns
tH
Minimum Hold Time Clock to Data
5
5
5
ns
CIN
Maximum Input Capacitance
10
10
10
pF
COUT
Maximum Output Capacitance
20
20
20
CPD
Power Dissipation Capacitance
OC
VCC
(Note 6)
OC
GND
Note 6: CPD determines the no load power consumption, PD
www.fairchildsemi.com
5
58
CPD V CC2 f ICC VCC, and the no load dynamic current consumption, IS
6
pF
pF
pF
CPD VCC f I CC.
MM74HCT373 • MM74HCT374
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package Number M20B
7
www.fairchildsemi.com
MM74HCT373 • MM74HCT374
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package Number M20D
www.fairchildsemi.com
8
MM74HCT373 • MM74HCT374
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package Number MTC20
9
www.fairchildsemi.com
MM74HCT373 • MM74HCT374 3-STATE Octal D-Type Latch • 3-STATE Octal D-Type Flip-Flop
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Package Number N20A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the
user.
www.fairchildsemi.com
www.fairchildsemi.com
10
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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