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SN74ALS521DWE4

SN74ALS521DWE4

SN74ALS521DWE4

Texas Instruments

SOIC 5V V 20 Comparators 20 ns ns 20 5V V 8

SOT-23

SN74ALS521DWE4 Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mount Surface Mount
Package / Case SOIC
Number of Pins 20
Weight 500.709277mg
PackagingRail/Tube
JESD-609 Code e4
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 20
ECCN Code EAR99
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Max Operating Temperature70°C
Min Operating Temperature 0°C
Additional FeatureWITH PULL-UP RESISTORS ON Q INPUTS; CASCADABLE
Subcategory Arithmetic Circuit
Technology TTL
Terminal Position DUAL
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Number of Functions 1
Supply Voltage 5V
Terminal Pitch1.27mm
Pin Count20
Operating Supply Voltage5V
Polarity Inverting
Power Supplies5V
Temperature GradeCOMMERCIAL
Max Supply Voltage5.5V
Min Supply Voltage4.5V
Load Capacitance50pF
Number of Bits 8
Propagation Delay20 ns
Turn On Delay Time20 ns
Family ALS
Output Characteristics 3-STATE
Logic IC Type IDENTITY COMPARATOR
High Level Output Current-2.6mA
Low Level Output Current24mA
Power Supply Current-Max (ICC) 19mA
Height Seated (Max) 2.65mm
Width 7.5mm
Radiation HardeningNo
RoHS StatusRoHS Compliant
Lead Free Lead Free
In-Stock:4644 items

SN74ALS521DWE4 Product Details

SN74ALS521DWE4 Overview


Rail/Tube's materials went into the packaging.There is no doubt that the SOIC is well known in the electronic industry due to its low package cost.Electronic parts using 8 Bits are designed here.A transmission line may also have 20 terminations, which are made using devices matched to its characteristic impedance.The unit has 1 functions.Power is supplied by the supply voltage 5V.This device has a 20 Pin Count.The pronged contacts on computers and other communications devices are called 20 pins.There is a mounting direction of Surface Mount on this electronic part.The electronic device in question is part of the ALS family.Located under Arithmetic Circuit, it is in the Subcategory.In order to run it, it needs a 5V power supply.For instance, WITH PULL-UP RESISTORS ON Q INPUTS; CASCADABLE was added.Supply voltage should be kept at 5V.Therefore, in order to provide maximum reliability, it operates at 0 degrees Celsius.Comparator should result in a warmer temperature than 0°C.19mA is the maximum power current (ICC) it is supplied with.This device supports the maximum supply voltage for 5.5V.4.5V is the minimum supply voltage required for the system to operate.Set -2.6mA as the high-level output current.There is a low level output current set to 24mA.IDENTITY COMPARATOR logic IC is used.

SN74ALS521DWE4 Features


SOIC package
8 Bits
20 terminations
1 Functions
20 pin count
5V power supplies
the maximal supply voltage of 5.5V


SN74ALS521DWE4 Applications


There are a lot of Texas Instruments
SN74ALS521DWE4 applications of comparators.


  • Communications digltal frequency synthesizers: VHF, UHF, FM, AM, etc.
  • Fixed or programmable irequency division
  • “Time out" timer for consume-appication industrial controls
  • Companion Appliceation Nole, ICAN-6374, "Application of the CMOS CD4059A Programmable Divide-by-N Counter in FM and Ctizens Band Transceiver Digital Tuners"
  • Servo motor controls
  • Process contollenr
  • Servo Motor Controls

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