Page 1
TL/F/6557
54174/DM54174/DM74174, 54175/DM54175/DM74175 Hex/Quad D Flip-Flops with Clear
June 1989
54174/DM54174/DM74174, 54175/DM54175/DM74175
Hex/Quad D Flip-Flops with Clear
General Description
These positive-edge triggered flip-flops utilize TTL circuitry
to implement D-type flip-flop logic. All have a direct clear
input, and the quad (175) version features complementary
outputs from each flip-flop.
Information at the D inputs meeting the setup and hold time
requirements is transferred to the Q outputs on the positivegoing edge of the clock pulse. Clock triggering occurs at a
particular voltage level and is not directly related to the transition time of the positive-going pulse. When the clock input
is at either the high or low level, the D input signal has no
effect at the output.
Features
Y
174 contains six flip-flops with single-rail outputs
Y
175 contains four flip-flops with double-rail outputs
Y
Buffered clock and direct clear inputs
Y
Individual data input to each flip-flop
Y
Applications include:
Buffer/storage registers
Shift registers
Pattern generators
Y
Typical clock frequency 40 MHz
Y
Typical power dissipation per flip-flop 38 mW
Y
Alternate Military/Aerospace device (54174, 54175) is
available. Contact a National Semiconductor Sales Office/Distributor for specifications.
Connection Diagrams
Dual-In-Line Package
TL/F/6557– 1
Order Number 54174DMQB, 54174FMQB, DM54174J,
DM54174W or DM74174N
See NS Package Number J16A, N16E or W16A
Dual-In-Line Package
TL/F/6557– 2
Order Number 54175DMQB, 54175FMQB, DM54175J,
DM54175W or DM74175N
See NS Package Number J16A, N16E or W16A
Function Table (Each Flip-Flop)
Inputs Outputs
Clear Clock D Q Q
²
LXXLH
H
u
HH L
H
u
LL H
HLXQ
0
Q
0
H
e
High Level (steady state)
L
e
Low Level (steady state)
X
e
Don’t Care
u
e
Transition from low to high level
Q
0
e
The level of Q before the indicated steady-state input conditions were established.
²
e
175 only
C
1995 National Semiconductor Corporation RRD-B30M105/Printed in U. S. A.
Page 2
Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7V
Input Voltage 5.5V
Operating Free Air Temperature Range
DM54 and 54
b
55§Ctoa125§C
DM74 0
§
Ctoa70§C
Storage Temperature Range
b
65§Ctoa150§C
Note:
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Recommended Operating Conditions
Symbol Parameter
DM54174 DM74174
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.8 0.8 V
I
OH
High Level Output Current
b
0.8
b
0.8 mA
I
OL
Low Level Output Current 16 16 mA
f
CLK
Clock Frequency (Note 4) 0 30 0 30 MHz
t
W
Pulse Width Clock Low 25 25
(Note 4)
Clock High 10 10 ns
Clear 20 20
t
SU
Data Setup Time (Note 4) 20 20 ns
t
H
Data Hold Time (Note 4) 0 0 ns
t
REL
Clear Release Time (Note 4) 30 30 ns
T
A
Free Air Operating Temperature
b
55 125 0 70
§
C
’174 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max
2.4 V
Voltage V
IL
e
Max, V
IH
e
Min
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max
0.4 V
Voltage V
IH
e
Min, V
IL
e
Max
I
I
Input Current@Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.4V 40 mA
I
IL
Low Level Input Current V
CC
e
Max, V
I
e
0.4V
b
1.6 mA
I
OS
Short Circuit V
CC
e
Max DM54
b
20
b
57
mA
Output Current (Note 2)
DM74
b
18
b
57
I
CC
Supply Current V
CC
e
Max (Note 3) 45 65 mA
Note 1: All typicals are at V
CC
e
5V, T
A
e
25§C.
Note 2: Not more than one output should be shorted at a time.
Note 3: With all outputs open and all DATA and CLEAR inputs at 4.5V, I
CC
is measured after a momentary ground, then 4.5V applied to the CLOCK input.
Note 4: T
A
e
25§C and V
CC
e
5V.
2
Page 3
’174 Switching Characteristics
at V
CC
e
5V and T
A
e
25§C (See Section 1 for Test Waveforms and Output Load)
Symbol Parameter
From (Input)
R
L
e
400X,C
L
e
15 pF
Units
To (Output)
Min Max
f
MAX
Maximum Clock
30 MHz
Frequency
t
PLH
Propagation Delay Time Clock to
25 ns
Low to High Level Output Any Q
t
PHL
Propagation Delay Time Clock to
25 ns
High to Low Level Output Any Q
t
PHL
Propagation Delay Time Clear to
40 ns
High to Low Level Output Any Q
Recommended Operating Conditions
Symbol Parameter
DM54175 DM74175
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.8 0.8 V
I
OH
High Level Output Current
b
0.8
b
0.8 mA
I
OL
Low Level Output Current 16 16 mA
f
CLK
Clock Frequency (Note 1) 0 30 0 30 MHz
t
W
Pulse Width Clock Low 25 25
(Note 1)
Clock High 10 10 ns
Clear 20 20
t
SU
Data Setup Time (Note 1) 20 20 ns
t
H
Data Hold Time (Note 1) 0 0 ns
t
REL
Clear Release Time (Note 1) 30 30 ns
T
A
Free Air Operating Temperature
b
55 125 0 70
§
C
Note 1: T
A
e
25§C and V
CC
e
5V.
3
Page 4
’175 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
12 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max
2.4 V
Voltage V
IL
e
Max, V
IH
e
Min
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max
0.4 V
Voltage V
IH
e
Min, V
IL
e
Max
I
I
Input Current@Max V
CC
e
Max, V
I
e
5.5V
1mA
Input Voltage
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.4V 40 mA
I
IL
Low Level Input Current V
CC
e
Max, V
I
e
0.4V
b
1.6 mA
I
OS
Short Circuit V
CC
e
Max DM54
b
20
b
57
mA
Output Current (Note 2)
DM74
b
18
b
57
I
CC
Supply Current V
CC
e
Max (Note 3) 30 45 mA
’175 Switching Characteristics
at V
CC
e
5V and T
A
e
25§C (See Section 1 for Test Waveforms and Output Load)
Symbol Parameter
From (Input)
R
L
e
400X,C
L
e
15 pF
Units
To (Output)
Min Max
f
MAX
Maximum Clock
30 MHz
Frequency
t
PLH
Propagation Delay Time Clock to
25 ns
Low to High Level Output Any Q or Q
t
PHL
Propagation Delay Time Clock to
25 ns
High to Low Level Output Any Q or Q
t
PLH
Propagation Delay Time Clear to
25 ns
Low to High Level Output Any Q
t
PHL
Propagation Delay Time Clear to
40 ns
High to Low Level Output Any Q
Note 1: All typicals are at V
CC
e
5V, T
A
e
25§C.
Note 2: Not more than one output should be shorted at a time.
Note 3: With all outputs open and 4.5V applied to all DATA and CLEAR inputs, I
CC
is measured after a momentary ground then 4.5V applied to the CLOCK.
4
Page 5
Logic Diagrams
174
TL/F/6557– 3
175
TL/F/6557– 4
5
Page 6
6
Page 7
Physical Dimensions inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 54174DMQB, 54175DMQB, DM54174J or DM54175J
NS Package Number J16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM74174N or DM74175N
NS Package Number N16E
7
Page 8
54174/DM54174/DM74174, 54175/DM54175/DM74175 Hex/Quad D Flip-Flops with Clear
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flat Package (W)
Order Number 54174FMQB, 54175FMQB, DM54174W or DM54175W
NS Package Number W16A
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