MC74F280

www.DataSheet4U.com MC54/74F280 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. 9-BIT PARITY GENERATOR/CHECKER FAST™ SCHOTTKY TTL CONNECTION DIAGRAM VCC 14 I5 13 I4 12 I3 11 I2 10 I1 9 I0 8 14 1 J SUFFIX CERAMIC CASE 632-08 1 I6 2 I7 3 NC 4 I8 5 ∑E 6 ∑O 7 GND 14 1 N SUFFIX PLASTIC CASE 646-06 LOGIC DIAGRAM I8 I7 I6 I5 I4 I3 I2 I1 I0 D SUFFIX SOIC CASE 751A-02 14 1 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 ΣO ΣE 6 ΣE 5 VCC = PIN 14 GND = PIN 7 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 MC54/74F280 FUNCTION TABLE Number of HIGH Inputs I0-I8 0, 2, 4, 6, 8 1, 3, 5, 7, 9 H = HIGH Voltage Level; L = LOW Voltage Level Outputs ∑ Even H L ∑ Odd L H GUARANTEED OPERATING RANGES Symbol VCC TA Supply Voltage Operating Ambient Temperature Range Parameter 54, 74 54 74 IOH IOL Output Current — High Output Current — Low 54, 74 54, 74 Min 4.5 -55 0 Typ 5.0 25 25 Max 5.5 125 70 –1.0 20 mA mA Unit V °C DC CHARACTERISTICS OVER OPERATING TEMPER...