SN74ALS521NE4Alternatives & Equivalent Parts

SN74ALS521NE4 is marked OBSOLETE. Compare the equivalents below, check each part's lifecycle, and request a quote on a suitable replacement.

About SN74ALS521NE4

SN74ALS521NE4 is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.

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Get one quote covering all 6 alternatives for SN74ALS521NE4 — response within 24 hours.

Specification Comparison

ParameterSN74ALS521NE4SourceATA8403C-6AQY66ATXMEGA64D3-AUBQ25071QWDQCTQ1STPM33TRM24512-DFMC6TGLD39200PUR
ManufacturerTexas InstrumentsMicrochipMicrochipTexas InstrumentsSTMicroelectronicsSTMicroelectronicsSTMicroelectronics
Package TypeDual-In-Line PackagesSmall Outline PackagesQuad Flat PackagesSmall Outline No-leadQuad Flat No-LeadOtherSmall Outline No-lead
Pin Count20864113397
Temperature Range~ 70.0°C-55.0°C ~ 85.0°C-40.0°C ~ 85.0°C-40.0°C ~ 125.0°C-40.0°C ~ 85.0°C-40.0°C ~ 85.0°C
Price$3.8900$1.1900$1.1200$0.3261$0.4633
StockIn StockIn StockIn StockIn StockIn StockIn StockIn Stock
LifecycleOBSOLETEACTIVEACTIVEACTIVEACTIVENOT RECOMMENDEDACTIVE
Electrical Parameters
Pbfree CodeYesYesYes
YTEOL0141598
Additional FeatureWITH PULL-UP RESISTORS ON Q INPUTS; CASCADABLE
FamilyALS
JESD-30 CodeR-PDIP-T20R-PDSO-G8S-PQFP-G64S-PDSO-N10S-XQCC-N32R-PDSO-N8S-XDSO-N6
JESD-609 Codee4e3e3e3e4e3
Load Capacitance (CL)50 pF
Logic IC TypeIDENTITY COMPARATOR
Number of Bits8
Number of Functions11111
Output Characteristics3-STATE
Output PolarityINVERTED
Package Body MaterialPLASTIC/EPOXYPLASTIC/EPOXYPLASTIC/EPOXYPLASTIC/EPOXYUNSPECIFIEDPLASTIC/EPOXYUNSPECIFIED
Package Equivalence CodeDIP20,.3TSSOP8,.19TQFP64,.63SQ,32SOLCC6,.11,37
Package ShapeRECTANGULARRECTANGULARSQUARESQUARESQUARERECTANGULARSQUARE
Package StyleIN-LINESMALL OUTLINE, THIN PROFILE, SHRINK PITCHFLATPACK, THIN PROFILESMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILECHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILESMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILESMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Packing MethodTUBETR
Power Supply Current-Max (ICC)19 mA
Propagation Delay (tpd)20 ns
Qualification StatusNot QualifiedNot QualifiedNot Qualified
Supply Voltage-Max (Vsup)5.5 V8 V3.65 V5.5 V
Supply Voltage-Min (Vsup)4.5 V3.75 V2.95 V1.7 V
Supply Voltage-Nom (Vsup)5 V4.2 V3.3 V2.5 V
Surface MountNOYESYESYESYESYESYES
TechnologyTTLCMOSCMOS
Temperature GradeCOMMERCIALOTHERINDUSTRIALAUTOMOTIVEINDUSTRIALINDUSTRIAL
Terminal FinishNICKEL PALLADIUM GOLDMATTE TINMatte Tin (Sn)Matte Tin (Sn)Nickel/Palladium/Gold (Ni/Pd/Au)Matte Tin (Sn) - annealed
Terminal FormTHROUGH-HOLEGULL WINGGULL WINGNO LEADNO LEADNO LEADNO LEAD
Terminal Pitch2.54 mm0.635 mm0.8 mm0.5 mm0.5 mm0.5 mm0.95 mm
Terminal PositionDUALDUALQUADDUALQUADDUALDUAL
## SN74ALS521NE4 Alternates Showing resultsImage
Reach Compliance CodeCompliant
Supply Current-Max11 mA18 mA0.005 mA
Supply Voltage-Nom3 V1.8 V
Telecom IC TypeTELECOM CIRCUIT
Manufacturer Package CodeTQFP-64
Factory Lead Time17 Weeks20 Weeks10 Weeks
Has ADCYES
Bit Size8
Boundary ScanYES
CPU FamilyAVR RISC
Clock Frequency-Max32 MHz
DAC ChannelsNO
DMA ChannelsNO
Number of I/O Lines50
On Chip Program ROM Width8
PWM ChannelsYES
Peak Reflow Temperature (Cel)260260260260
RAM (bytes)4096
ROM (words)65536
ROM ProgrammabilityFLASH
Speed32 MHz
Supply Voltage-Max3.6 V
Supply Voltage-Min1.8 V
uPs/uCs/Peripheral ICs TypeMICROCONTROLLER, RISC
## ATXMEGA64D3-AU Alternates Showing resultsImage
Date Of Intro2016-04-26
Adjustable ThresholdYES
Analog IC - Other TypeLINEAR BATTERY CHARGERANALOG CIRCUIT
Input Voltage-Max8 V
Input Voltage-Min3.75 V
Number of Channels1
Screening LevelAEC-Q100
Time@Peak Reflow Temperature-Max (s)3030
## BQ25071QWDQCTQ1 Alternates Showing resultsImage
Clock Frequency-Max (fCLK)1 MHz
Memory Density524288 bit
Memory IC TypeEEPROM
Memory Width8
Number of Words65536 words
Number of Words Code64000
Operating ModeSYNCHRONOUS
Organization64KX8
Parallel/SerialSERIAL
Programming Voltage5 V
Serial Bus TypeI2C
Write Cycle Time-Max (tWC)5 ms
## M24512-DFMC6TG Alternates Showing resultsImage
AdjustabilityADJUSTABLE
Dropout Voltage1-Max0.25 V
Dropout Voltage1-Nom0.11 V
Line Regulation-Max (%/V)0.2
Number of Outputs1
Operating Temperature TJ-Max125 °C
Operating Temperature TJ-Min-40 °C
Output Current1-Max2 A
Output Voltage1-Max5.75 V
Output Voltage1-Min0.5 V
Regulator TypeADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR

Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.

Need pricing on these alternatives?

Get one quote covering all 6 alternatives for SN74ALS521NE4 — response within 24 hours.

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Why Look for Alternatives?

Finding alternatives for SN74ALS521NE4 is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.

When evaluating SN74ALS521NE4 replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.

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FAQ

What is equivalent to SN74ALS521NE4?

Known equivalents for SN74ALS521NE4 include ATA8403C-6AQY66, ATXMEGA64D3-AU, BQ25071QWDQCTQ1. Contact FindMyChip for a full compatibility analysis for your specific application.

Can I use a different manufacturer's part instead of SN74ALS521NE4?

In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.

How do I verify SN74ALS521NE4 alternatives?

Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.