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SN74ALS521TIN/a541avai8-Bit Identity Comparators With Open-Collector Outputs
SN74ALS521DWTIN/a880avai8-Bit Identity Comparators With Open-Collector Outputs
SN74ALS521DWRTIN/a2002avai8-Bit Identity Comparators With Open-Collector Outputs
SN74ALS521NTIN/a410avai8-Bit Identity Comparators With Open-Collector Outputs
SN74ALS521NSRTIN/a1804avai8-Bit Identity Comparators With Open-Collector Outputs


SN74ALS521DWR ,8-Bit Identity Comparators With Open-Collector Outputs SN54ALS520, SN74ALS518, SN74ALS520, SN74ALS521 8-BIT IDENTITY COMPARATORS SDAS224B – JUNE 1982 – ..
SN74ALS521N ,8-Bit Identity Comparators With Open-Collector Outputslogic diagrams (positive logic)SN74ALS51817P718Q715P616Q613P514Q511P412Q419P = Q8P39Q36P27Q24P15Q12 ..
SN74ALS521NSR ,8-Bit Identity Comparators With Open-Collector Outputslogic diagrams (positive logic)SN74ALS51817P718Q715P616Q613P514Q511P412Q419P = Q8P39Q36P27Q24P15Q12 ..
SN74ALS533ADW ,Octal D-Type Transparent Latches With 3-State Outputs SN74ALS533A, SN74AS533A OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS SDAS270 – DECEMBER ..
SN74ALS533ADWR ,Octal D-Type Transparent Latches With 3-State Outputsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, V ..
SN74ALS533AN ,Octal D-Type Transparent Latches With 3-State Outputselectrical characteristics over recommended operating free-air temperature range (unlessotherwise n ..
SN74LVC157APWG4 ,Quadruple 2-Line To1-Line Data Selector / Multiplexer 16-TSSOP -40 to 85Maximum Ratingsover operating free-air temperature range (unless otherwise noted)MIN MAX UNITV Supp ..
SN74LVC157APWR ,Quadruple 2-Line To1-Line Data Selector / MultiplexerORDERING INFORMATION(1)T PACKAGE ORDERABLE PART NUMBER TOP-SIDE MARKINGA–40°C to 85°C QFN – RGY Ree ..
SN74LVC157APWRG4 ,Quadruple 2-Line To1-Line Data Selector / Multiplexer 16-TSSOP -40 to 85 SCAS292Q –JANUARY 1993–REVISED DECEMBER 2010QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS ..
SN74LVC157ARGYR ,Quadruple 2-Line To1-Line Data Selector / MultiplexerMaximum Ratingsover operating free-air temperature range (unless otherwise noted)MIN MAX UNITV Supp ..
SN74LVC157ARGYR ,Quadruple 2-Line To1-Line Data Selector / Multiplexer SCAS292Q –JANUARY 1993–REVISED DECEMBER 2010
SN74LVC161284 ,19-Bit Bus Interface With 3-State Outputsmaximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage ra ..


SN74ALS521-SN74ALS521DW-SN74ALS521DWR-SN74ALS521N-SN74ALS521NSR
8-Bit Identity Comparators With Open-Collector Outputs
Package Options Include PlasticSmall-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs

‡SN74ALS521 is identical to ′ALS688.
description

These identity comparators perform comparisons
on two 8-bit binary or BCD words. The
SN74ALS518 provides P = Q outputs, while the
′ALS520 and SN74ALS521 provide P = Q
outputs. The SN74ALS518 has an open-collector
output. The SN74ALS518 and ′ALS520 feature
20-kΩ pullup resistors on the Q inputs for analog
or switch data.
The SN54ALS520 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS518, SN74ALS520, and
SN74ALS521 are characterized for operation
from 0°C to 70°C.
FUNCTION TABLE

GND
P = Q/P = Q†
SN54ALS520... FK PACKAGE
(TOP VIEW)
P0G
= Q
GND P = Q for SN74ALS518
P = Q for ′ALS520 and SN74ALS521
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