74688 IC 8-bit Magnitude Comparator
EGP 36
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74688 8-bit magnitude comparator Pin Symbol Description 1 E enable (active low) 2 P 0 word input 3 Q 0 word input 4 P 1 word input 5 Q 1 word input 6 P 2 word input 7 Q 2 word input 8 P 3 word input 9 Q 3 word input 10 GND ground 11 P 4 word input 12 Q 4 word input 13 P 5 word input 14 Q 5 word input 15 P 6 word input 16 Q 6 word input 17 P 7 word input 18 Q 7 word input 19 P=Q equal-to output (low when P = Q) 20 Vcc supply voltage Specifications (typical values under recommended operating conditions, unless specified) Parameter Value Unit Propagation delay, P n , Q n to P=Q 17 (74HC/HCT) ns Propagation delay, E to P=Q 8 (74HC) 12 (74HCT) ns Features: Designed to Perform Comparisons Between Two 8-bit Binary or BCD Words Totem Pole Output Provides Equal Comparison Result Operating Temperature up to 70oC Standard TTL Switching Voltages VCC Supply Voltage 5.0V TA Operating Ambient Temperature Range 0-70°C IOH Output Current — High –0.4mA IOL Output Current — Low 24mA Datasheet
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