MC54F280 MOTOROLA | Alldatasheet

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Technical content

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. 1314 12 11 10 9 8 21 3 4 5 6 7 GND VCC CONNECTION DIAGRAM I5 I4 I3 I2 I1 I0 I6 I7 NC I 8 ∑ E ∑ O NOTE: This diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. LOGIC DIAGRAM I0I1I2I3I4I5I6I7I8 ΣEΣO D SUFFIX SOIC CASE 751A-02 N SUFFIX PLASTIC CASE 646-0614 J SUFFIX CERAMIC CASE 632-08 MC54/74F280 9-BIT PARITY GENERATOR/CHECKER FAST  SCHOTTKY TTL

ORDERING INFORMATION

I0 I1 I2 I3 I4 I5 I6 I7 I8 ΣO ΣE VCC = PIN 14 GND = PIN 7 8 9 10 11 12 13 1 2 4 6 5

Number of HIGH Inputs Outputs I0-I8 ∑ Even ∑ Odd 0, 2, 4, 6, 8 H L 1, 3, 5, 7, 9 L H H = HIGH Voltage Level; L = LOW Voltage Level GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54, 74 4.5 5.0 5.5 V TA Operating Ambient T emperature Range 54 -55 25 125 °CA 74 0 25 70 IOH Output Current — High 54, 74 –1.0 mA IOL Output Current — Low 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.

TA = +25°C TA = –55°C to +125°C TA = 0°C to +70°C VCC = +5.0 V VCC = 5.0 V ±10% VCC = 5.0 V ±10% C L = 50 pF C L = 50 pF C L = 50 pF Symbol Parameter Min Max Min Max Min Max Unit tPLH Propagation Delay 4.5 15 4.5 20 4.5 16 ns tPHL In to ∑ E 4.5 16 4.5 21 4.5 17 tPLH Propagation Delay 4.5 15 4.5 20 4.5 16 ns tPHL In to ∑ O 4.5 16 4.5 21 4.5 17