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r z 7 SGS-THOMSON ^ 7# I ? M
M54HC280 M74HC280
9 BIT PARITY GENERATOR
HIGHSPEED tPD = 22 ns (TYP.) at Vcc = 5 V LOW POWER DISSIPATION Icc = 4 nA (MAX.) at Ta = 25 "C 6 V HIGH NOISE IMMUNITY