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Motorola Electronic Components Datasheet

MC54F280 Datasheet

9-BIT PARITY GENERATOR/CHECKER

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MC54F280 pdf
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9-BIT PARITY GENERATOR/
CHECKER
The MC54/74F280 is a high-speed parity generator/checker that accepts
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.
CONNECTION DIAGRAM
VCC I5 I4 I3 I2 I1 I0
14 13 12 11 10 9 8
MC54/74F280
9-BIT PARITY
GENERATOR/CHECKER
FASTSCHOTTKY TTL
14
1
J SUFFIX
CERAMIC
CASE 632-08
1234567
I6 I7 NC I8 E O GND
LOGIC DIAGRAM
I8 I7 I6
I5 I4 I3
I2 I1 I0
ΣO ΣE
NOTE:
This diagram is provided only for the understanding of logic operations and should not
be used to estimate propagation delays.
FAST AND LS TTL DATA
4-143
14
1
N SUFFIX
PLASTIC
CASE 646-06
14
1
D SUFFIX
SOIC
CASE 751A-02
ORDERING INFORMATION
MC54FXXXJ
MC74FXXXN
MC74FXXXD
Ceramic
Plastic
SOIC
LOGIC SYMBOL
8 9 10 11 12 13 1 2 4
I0 I1 I2 I3 I4 I5 I6 I7 I8
ΣO ΣE
65
VCC = PIN 14
GND = PIN 7


Motorola Electronic Components Datasheet

MC54F280 Datasheet

9-BIT PARITY GENERATOR/CHECKER

No Preview Available !

MC54F280 pdf
MC54/74F280
FUNCTION TABLE
Number of HIGH Inputs
0, 2, 4, 6, 8
I0-I8
1, 3, 5, 7, 9
H = HIGH Voltage Level; L = LOW Voltage Level
Outputs
Even
H
L
Odd
L
H
GUARANTEED OPERATING RANGES
Symbol
Parameter
VCC
Supply Voltage
TA Operating Ambient Temperature Range
IOH Output Current — High
IOL Output Current — Low
Min Typ Max Unit
54, 74
4.5
5.0
5.5
V
54 -55 25 125 °C
74 0 25 70
54, 74
–1.0 mA
54, 74
20 mA
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH Input HIGH Voltage
2.0
V Guaranteed Input HIGH Voltage for All Inputs
VIL Input LOW Voltage
0.8 V Guaranteed Input LOW Voltage for All Inputs
VIK Input Clamp Diode Voltage
–1.2 V VCC = MIN, IIN = –18 MA
VOH
Output HIGH Voltage
54, 74 2.5
3.4
V IOH = –1.0 mA
VCC = 4.5 V
74 2.7 3.4
V IOH = 1.0 mA
VCC = 4.75 V
VOL
Output Low Voltage
0.35 0.5
V IOL = 20 mA
VCC = MIN
IIH Input HIGH Current
20 µA VCC = MAX, VIN = 2.7 V
100 µA VCC = MAX, VIN = 7.0 V
IIL Input LOW Current
–0.6 mA VCC = MAX, VIN = 0.5 V
IOS Short Circuit Current (Note 2)
–60
–150 mA VCC = MAX, VOUT = 0 V
ICC Power Supply Current
25 38 mA VCC = MAX
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.
2. Not more than one output should be shorted at a time, nor for more than 1 second.
FAST AND LS TTL DATA
4-144


Part Number MC54F280
Description 9-BIT PARITY GENERATOR/CHECKER
Maker Motorola
Total Page 3 Pages
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