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74F521

Part Number	74F521
Manufacturer	Texas Instruments
Description	8-Bit Identity Comparators
Published	Dec 22, 2021
Detailed Description	• Compares Two 8-Bit Words • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard...
Datasheet	74F521 PDF File

Overview

• 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.
Q3 GND P4 Q4 P5 SN54F521, SN74F521 8ĆBIT IDENTITY COMPARATORS ą SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 SN54F521 .
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J PACKAGE SN74F521 .
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DW OR N PACKAGE (TOP VIEW) OE 1 P0 2 Q0 3 P1 4 Q1 5 P2 6 Q2 7 P3 8 Q3 9 GND 10 20 VCC 19 P = Q 18 Q7 17 P7 16 Q6 15 P6 14 Q5 13 P5 12 Q4 11 P4 SN54F521 .
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FK PACKAGE (TOP VIEW) Q0 P0 OE VCC P=Q P1 3 2 1 20 19 4 18 Q7 Q1 5 17 P7 P2 6 16 Q6 Q2 7 15 P6 P3 8 14 Q5 9 10 11 12 13 PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  1993, Texas Instruments Incorporated • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 • POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 2−1 SN54F521, SN74F521 8ĆBIT IDENTITY COMPARATORS ą SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 logic diagram (positive logic) 17 P7 Q7 18 15 P6 Q6 16 13 P5 Q5 14 11 P4 Q4 12 8 P3 Q3 9 6 P2 Q2 7 4 P1 Q1 5 2 P0 Q0 3 OE 1 19 P=Q 2−2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 • POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 SN54F521, SN74F521 8ĆBIT IDENTITY COMPARATORS ą SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 absolute ma...

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