Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Comparator DIP 20 No. of bits 8 A=B 4.5 V

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

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SDFS091 − MARCH 1987 − REVISED OCTOBER 1993

2−1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443

• 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

OUTPUT

P, Q OE

OUTPUT

P = Q

P = Q L L

P ≠ Q XH

X H H

logic symbol

†

COMP

1P = Q

P = Q

†

This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

GND

P = Q

SN54F521 ...J PACKAGE

SN74F521 . . . DW OR N PACKAGE

(TOP VIEW)

3 2 1 20 19

9 10 11 12 13

SN54F521 . . . FK PACKAGE

(TOP VIEW)

P5 P = Q

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Summary of content (17 pages)

PAGE 1
SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 SN54F521 . . . J PACKAGE SN74F521 . . . DW OR N PACKAGE (TOP VIEW) 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.
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SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 logic diagram (positive logic) P7 Q7 P6 Q6 P5 Q5 P4 Q4 17 18 15 16 13 14 11 12 19 P3 Q3 P2 Q2 P1 Q1 P0 Q0 OE 2−2 8 9 6 7 4 5 2 3 1 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443 • P=Q
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SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −1.2 V to 7 V Input current range .
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SDFS091 − MARCH 1987 − REVISED OCTOBER 1993 switching characteristics (see Note 3) PARAMETER FROM (INPUT) VCC = 5 V, CL = 50 pF, RL = 500 Ω, TA = 25°C TO (OUTPUT) VCC = 4.5 V to 5.5 V, CL = 50 pF, RL = 500 Ω, TA = MIN to MAX† ′F521 tPLH tPHL P or Q P=Q tPLH tPHL OE P=Q SN74F521 MIN TYP MAX MIN MAX MIN MAX 2.7 6.6 10 2.7 14 2.7 11 3.7 6.6 10 3.2 12 3.2 11 2.2 4.6 6.5 2.2 8.5 2.2 7.5 2.7 6.1 9 2.7 13.5 2.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74F521DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74F521NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74F521DWR SOIC DW 20 2000 367.0 367.0 45.0 SN74F521NSR SO NS 20 2000 367.0 367.0 45.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.