NSC 74F379

54F/74F379
Quad Parallel Register with Enable
General Description
Features
The ’F379 is a 4-bit register with buffered common Enable.
This device is similar to the ’F175 but features the common
Enable rather than common Master Reset.
Y
Y
Y
Y
Y
Commercial
Military
74F379PC
54F379DM (QB)
74F379SC (Note 1)
Edge triggered D-type inputs
Buffered positive edge-triggered clock
Buffered common enable input
True and complement outputs
Guaranteed 4000V minimum ESD protection
Package
Number
Package Description
N16E
16-Lead (0.300× Wide) Molded Dual-In-Line
J16A
16-Lead Ceramic Dual-In-Line
M16A
16-Lead (0.300× Wide) Molded Small Outline, JEDEC
M16D
16-Lead (0.300× Wide) Molded Small Outline, EIAJ
54F379FM (QB)
W16A
16-Lead Cerpack
54F379LM (QB)
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
74F379SJ (Note 1)
Note 1: Devices also available in 13× reel. Use suffix e SCX and SJX.
Logic Symbols
Connection Diagrams
Pin Assignment
DIP, SOIC and Flatpak
IEEE/IEC
Pin Assignment
for LCC
TL/F/9527 – 1
TL/F/9527 – 2
TL/F/9527–5
TL/F/9527–3
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation
TL/F/9527
RRD-B30M115/Printed in U. S. A.
54F/74F379 Quad Parallel Register with Enable
August 1995
Unit Loading/Fan Out
54F/74F
Pin Names
E
D 0 – D3
CP
Q0 – Q3
Q0 – Q3
Description
Enable Input (Active LOW)
Data Inputs
Clock Pulse Input (Active Rising Edge)
Flip-Flop Outputs
Complement Outputs
U.L.
Input IIH/IIL
HIGH/LOW Output IOH/IOL
1.0/1.0
1.0/1.0
1.0/1.0
50/33.3
50/33.3
20 mA/b0.6 mA
20 mA/b0.6 mA
20 mA/b0.6 mA
b 1 mA/20 mA
b 1 mA/20 mA
Functional Description
Truth Table
The ’F379 consists of four edge-triggered D-Type flip-flops
with individual D inputs and Q and Q outputs. The Clock
(CP) and Enable (E) inputs are common to all flip-flops.
When the E is input HIGH, the register will retain the present
data independent of the CP input. The Dn and E inputs can
change when the clock is in either state, provided that the
recommended setup and hold times are observed.
Inputs
Outputs
E
CP
Dn
Qn
Qn
H
L
L
L
L
L
X
H
L
NC
H
L
NC
L
H
H e HIGH Voltage Level
L e LOW Voltage Level
X e Immaterial
L e LOW-to-HIGH Transition
NC e No Change
Logic Diagram
TL/F/9527 – 4
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
Absolute Maximum Ratings (Note 1)
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Storage Temperature
b 65§ C to a 150§ C
Ambient Temperature under Bias
Junction Temperature under Bias
Plastic
b 55§ C to a 125§ C
Free Air Ambient Temperature
Military
Commercial
b 55§ C to a 125§ C
0§ C to a 70§ C
Supply Voltage
Military
Commercial
b 55§ C to a 175§ C
b 55§ C to a 150§ C
a 4.5V to a 5.5V
a 4.5V to a 5.5V
VCC Pin Potential to
Ground Pin
b 0.5V to a 7.0V
b 0.5V to a 7.0V
Input Voltage (Note 2)
b 30 mA to a 5.0 mA
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with VCC e 0V)
b 0.5V to VCC
Standard Output
b 0.5V to a 5.5V
TRI-STATEÉ Output
Current Applied to Output
in LOW State (Max)
twice the rated IOL (mA)
ESD Last Passing Voltge (Min)
4000V
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
Symbol
54F/74F
Parameter
Min
VIH
Input HIGH Voltage
VIL
Input LOW Voltage
VCD
Input Clamp Diode Voltage
VOH
Output HIGH
Voltage
54F 10% VCC
74F 10% VCC
74F 5% VCC
VOL
Output LOW
Voltage
54F 10% VCC
74F 10% VCC
IIH
Input HIGH
Current
IBVI
Typ
Units
VCC
Conditions
Max
2.0
V
Recognized as a HIGH Signal
0.8
V
b 1.2
V
Min
IIN e b18 mA
V
Min
IOH e b1 mA
IOH e b1 mA
IOH e b1 mA
0.5
0.5
V
Min
IOL e 20 mA
IOL e 20 mA
54F
74F
20.0
5.0
mA
Max
VIN e 2.7V
Input HIGH Current
Breakdown Test
54F
74F
100
7.0
mA
Max
VIN e 7.0V
ICEX
Output HIGH
Leakage Current
54F
74F
250
50
mA
Max
VOUT e VCC
VID
Input Leakage
Test
74F
V
0.0
IID e 1.9 mA
All Other Pins Grounded
IOD
Output Leakage
Circuit Current
74F
3.75
mA
0.0
VIOD e 150 mV
All Other Pins Grounded
IIL
Input LOW Current
IOS
Output Short-Circuit Current
ICCL
Power Supply Current
2.5
2.5
2.7
4.75
b 60
28
3
Recognized as a LOW Signal
b 0.6
mA
Max
VIN e 0.5V
b 150
mA
Max
VOUT e 0V
40
mA
Max
VO e LOW
AC Electrical Characteristics
Symbol
Parameter
74F
54F
74F
TA e a 25§ C
VCC e a 5.0V
CL e 50 pF
TA, VCC e Mil
CL e 50 pF
TA, VCC e Com
CL e 50 pF
Min
Typ
fmax
Maximum Clock Frequency
100
140
tPLH
tPHL
Propagation Delay
CP to Qn, Qn
3.5
5.0
5.0
6.5
Max
Min
Max
75
6.5
8.5
Min
Max
100
3.0
4.0
8.5
10.0
Units
MHz
3.5
5.0
7.5
9.5
ns
AC Operating Requirements
Symbol
Parameter
74F
54F
74F
TA e a 25§ C
VCC e a 5.0V
TA, VCC e Mil
TA, VCC e Com
Min
Min
Min
Max
Max
Units
Max
ts(H)
ts(L)
Setup Time, HIGH or LOW
Dn to CP
3.0
3.0
4.0
4.0
3.0
3.0
th(H)
th(L)
Hold Time, HIGH or LOW
Dn to CP
1.0
1.0
2.0
2.0
1.0
1.0
ts(H)
ts(L)
Setup Time, HIGH or LOW
E to CP
6.0
6.0
8.0
8.0
6.0
6.0
th(H)
th(L)
Hold Time, HIGH or LOW
E to CP
0
0
0
0
0
0
tw(H)
tw(L)
CP Pulse Width
HIGH or LOW
4.0
5.0
5.0
7.0
4.0
5.0
ns
ns
ns
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:
74F
379
S
Temperature Range Family
74F e Commercial
54F e Military
C
X
Special Variations
QB e Military grade device with
environmental and burn-in
processing
X e Devices shipped in 13× reel
Device Type
Package Code
P e Plastic DIP
D e Ceramic DIP
F e Flatpak
L e Leadless Chip Carrier (LCC)
S e Small Outline SOIC JEDEC
SJ e Small Outline SOIC EIAJ
Temperature Range
C e Commercial (0§ C to a 70§ C)
M e Military (b55§ C to a 125§ C)
4
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
16-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J16A
5
Physical Dimensions inches (millimeters) (Continued)
16-Lead (0.150× Wide) Molded Small Outline Integrated Circuit (S)
NS Package Number M16A
16-Lead (0.300× Wide) Molded Small Outline Package, EIAJ (SJ)
NS Package Number M16D
6
Physical Dimensions inches (millimeters) (Continued)
16-Lead (0.300× Wide) Molded Dual-In-Line Package (P)
NS Package Number N16E
7
54F/74F379 Quad Parallel Register with Enable
Physical Dimensions inches (millimeters) (Continued)
16-Lead Ceramic Flatpak (F)
NS Package Number W16A
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