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74F521 - 8-Bit Identity Comparators

Description

These identity comparators perform comparisons on two 8-bit binary or BCD words.

They provide P = Q outputs.

55°C to 125°C.

The SN74F521 is characterized for operation from 0°C to 70°C.

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• Compares Two 8-Bit Words • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These identity comparators perform comparisons on two 8-bit binary or BCD words. They provide P = Q outputs. The SN54F521 is characterized for operation over the full military temperature range of − 55°C to 125°C. The SN74F521 is characterized for operation from 0°C to 70°C. FUNCTION TABLE INPUTS P, Q OE OUTPUT P=Q P=Q L L P≠Q X H X H H logic symbol† 1 OE 2 P0 4 P1 6 P2 8 P3 11 P4 13 P5 15 P6 17 P7 3 Q0 5 Q1 7 Q2 9 Q3 12 Q4 14 Q5 16 Q6 18 Q7 COMP 0 P 7 1P = Q 0 Q 7 19 P=Q † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
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