54F 74F280 9-Bit Parity Generator Checker
August 1995
54F 74F280
9-Bit Parity Generator Checker
General Description
The ’F280 is a high-speed parity generator checker that ac-
cepts nine bits of input data and detects whether an even or
an odd number of these inputs is HIGH If an even number
of inputs is HIGH the Sum Even output is HIGH If an odd
number is HIGH the Sum Even output is LOW The Sum
Odd output is the complement of the Sum Even output
Features
Y
Guaranteed 4000V minimum ESD protection
Commercial
74F280PC
Military
Package
Number
N14A
Package Description
14-Lead (0 300 Wide) Molded Dual-In-Line
14-Lead Ceramic Dual-In-Line
14-Lead (0 150 Wide) Molded Small Outline JEDEC
14-Lead (0 300 Wide) Molded Small Outline EIAJ
14-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
54F280DM (Note 2)
74F280SC (Note 1)
74F280SJ (Note 1)
54F280FM (Note 2)
54F280LM (Note 2)
J14A
M14A
M14D
W14B
E20A
Note 1
Devices also available in 13 reel Use suffix
e
SCX and SJX
Note 2
Military grade device with environmental and burn-in processing Use suffix
e
DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
Pin Assignment
for LCC
TL F 9512–3
IEEE IEC
TL F 9512 – 1
TL F 9512 – 2
TL F 9512–5
TRI-STATE is a registered trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL F 9512
RRD-B30M115 Printed in U S A
Unit Loading Fan Out
54F 74F
Pin Names
Description
UL
HIGH LOW
10 10
50 33 3
50 33 3
Input I
IH
I
IL
Output I
OH
I
OL
20
mA
b
0 6 mA
b
1 mA 20 mA
b
1 mA 20 mA
I
0
–I
8
R
O
R
E
Data Inputs
Odd Parity Output
Even Parity Output
Truth Table
Number of
HIGH Inputs
I
0
–I
8
0 2 4 6 8
1 3 5 7 9
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
Outputs
R
Even
H
L
R
Odd
L
H
Logic Diagram
TL F 9512 – 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)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
b
65 C to
a
150 C
Storage Temperature
Ambient Temperature under Bias
Junction Temperature under Bias
Plastic
V
CC
Pin Potential to
Ground Pin
Input Voltage (Note 2)
Input Current (Note 2)
Voltage Applied to Output
in HIGH State (with V
CC
e
0V)
Standard Output
TRI-STATE Output
Current Applied to Output
in LOW State (Max)
ESD Last Passing Voltage (Min)
b
55 C to
a
125 C
b
55 C to
a
175 C
b
55 C to
a
150 C
b
0 5V to
a
7 0V
b
0 5V to
a
7 0V
b
30 mA to
a
5 0 mA
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
Commercial
Supply Voltage
Military
Commercial
b
55 C to
a
125 C
0 C to
a
70 C
a
4 5V to
a
5 5V
a
4 5V to
a
5 5V
b
0 5V to V
CC
b
0 5V to
a
5 5V
twice the rated I
OL
(mA)
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
V
IH
V
IL
V
CD
V
OH
Parameter
Min
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage Test
Output Leakage
Circuit Current
Input LOW Current
Output Short-Circuit Current
Power Supply Current
b
60
54F 74F
Typ
Max
Units
V
08
b
1 2
V
CC
Conditions
Recognized as a HIGH Signal
Recognized as a LOW Signal
20
V
V
V
Min
Min
I
IN
e b
18 mA
I
OH
e b
1 mA
I
OH
e b
1 mA
I
OH
e b
1 mA
I
OL
e
20 mA
I
OL
e
20 mA
V
IN
e
2 7V
V
IN
e
7 0V
V
OUT
e
V
CC
I
ID
e
1 9
mA
All Other Pins Grounded
V
IOD
e
150 mV
All Other Pins Grounded
V
IN
e
0 5V
V
OUT
e
0V
V
O
e
HIGH
54F 10% V
CC
74F 10% V
CC
74F 5% V
CC
54F 10% V
CC
74F 10% V
CC
54F
74F
54F
74F
54F
74F
74F
74F
25
25
27
05
05
20 0
50
100
70
250
50
4 75
3 75
b
0 6
b
150
V
OL
I
IH
I
BVI
I
CEX
V
ID
I
OD
I
IL
I
OS
I
CCH
V
mA
mA
mA
V
mA
mA
mA
mA
Min
Max
Max
Max
00
00
Max
Max
Max
25
38
3
AC Electrical Characteristics
74F
Symbol
Parameter
Min
t
PLH
t
PHL
t
PLH
t
PHL
Propagation Delay
I
n
to
R
E
Propagation Delay
I
n
to
R
O
65
65
60
65
T
A
e a
25 C
V
CC
e a
5 0V
C
L
e
50 pF
Typ
10 0
11 0
10 0
11 0
Max
15 0
16 0
15 0
16 0
54F
T
A
V
CC
e
Mil
C
L
e
50 pF
Min
65
65
50
65
Max
20 0
21 0
20 0
21 0
74F
T
A
V
CC
e
Com
C
L
e
50 pF
Min
65
65
60
65
Max
16 0
17 0
16 0
17 0
ns
ns
Units
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
Temperature Range Family
74F
e
Commercial
54F
e
Military
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
280
S
C
X
Special Variations
QB
e
Military grade device with
environmental and burn-in
processing
X
e
Devices shipped in 13 reel
Temperature Range
C
e
Commercial (0 C to
a
70 C)
M
e
Military (
b
55 C to
a
125 C)
4
Physical Dimensions
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
5
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