SN74ALS521NE4Alternatives & Equivalent Parts
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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Specification Comparison
| Parameter | SN74ALS521NE4Source | ATA8403C-6AQY66 | ATXMEGA64D3-AU | BQ25071QWDQCTQ1 | STPM33TR | M24512-DFMC6TG | LD39200PUR |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Microchip | Microchip | Texas Instruments | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Dual-In-Line Packages | Small Outline Packages | Quad Flat Packages | Small Outline No-lead | Quad Flat No-Lead | Other | Small Outline No-lead |
| Pin Count | 20 | 8 | 64 | 11 | 33 | 9 | 7 |
| 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 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | NOT RECOMMENDED | ACTIVE |
| Electrical Parameters | |||||||
| Pbfree Code | Yes | — | Yes | Yes | — | — | — |
| YTEOL | 0 | — | 14 | 15 | — | 9 | 8 |
| Additional Feature | WITH PULL-UP RESISTORS ON Q INPUTS; CASCADABLE | — | — | — | — | — | — |
| Family | ALS | — | — | — | — | — | — |
| JESD-30 Code | R-PDIP-T20 | R-PDSO-G8 | S-PQFP-G64 | S-PDSO-N10 | S-XQCC-N32 | R-PDSO-N8 | S-XDSO-N6 |
| JESD-609 Code | e4 | e3 | e3 | e3 | — | e4 | e3 |
| Load Capacitance (CL) | 50 pF | — | — | — | — | — | — |
| Logic IC Type | IDENTITY COMPARATOR | — | — | — | — | — | — |
| Number of Bits | 8 | — | — | — | — | — | — |
| Number of Functions | 1 | — | — | 1 | 1 | 1 | 1 |
| Output Characteristics | 3-STATE | — | — | — | — | — | — |
| Output Polarity | INVERTED | — | — | — | — | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | UNSPECIFIED | PLASTIC/EPOXY | UNSPECIFIED |
| Package Equivalence Code | DIP20,.3 | TSSOP8,.19 | TQFP64,.63SQ,32 | — | — | — | SOLCC6,.11,37 |
| Package Shape | RECTANGULAR | RECTANGULAR | SQUARE | SQUARE | SQUARE | RECTANGULAR | SQUARE |
| Package Style | IN-LINE | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | FLATPACK, THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TUBE | — | — | — | — | — | TR |
| Power Supply Current-Max (ICC) | 19 mA | — | — | — | — | — | — |
| Propagation Delay (tpd) | 20 ns | — | — | — | — | — | — |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | — | — | — |
| Supply Voltage-Max (Vsup) | 5.5 V | — | — | 8 V | 3.65 V | 5.5 V | — |
| Supply Voltage-Min (Vsup) | 4.5 V | — | — | 3.75 V | 2.95 V | 1.7 V | — |
| Supply Voltage-Nom (Vsup) | 5 V | — | — | 4.2 V | 3.3 V | 2.5 V | — |
| Surface Mount | NO | YES | YES | YES | YES | YES | YES |
| Technology | TTL | — | CMOS | — | — | CMOS | — |
| Temperature Grade | COMMERCIAL | OTHER | INDUSTRIAL | AUTOMOTIVE | INDUSTRIAL | INDUSTRIAL | — |
| Terminal Finish | NICKEL PALLADIUM GOLD | MATTE TIN | Matte Tin (Sn) | Matte Tin (Sn) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) - annealed |
| Terminal Form | THROUGH-HOLE | GULL WING | GULL WING | NO LEAD | NO LEAD | NO LEAD | NO LEAD |
| Terminal Pitch | 2.54 mm | 0.635 mm | 0.8 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.95 mm |
| Terminal Position | DUAL | DUAL | QUAD | DUAL | QUAD | DUAL | DUAL |
| ## SN74ALS521NE4 Alternates Showing results | Image | — | — | — | — | — | — |
| Reach Compliance Code | — | Compliant | — | — | — | — | — |
| Supply Current-Max | — | 11 mA | 18 mA | — | — | 0.005 mA | — |
| Supply Voltage-Nom | — | 3 V | 1.8 V | — | — | — | — |
| Telecom IC Type | — | TELECOM CIRCUIT | — | — | — | — | — |
| Manufacturer Package Code | — | — | TQFP-64 | — | — | — | — |
| Factory Lead Time | — | — | 17 Weeks | — | 20 Weeks | 10 Weeks | — |
| Has ADC | — | — | YES | — | — | — | — |
| Bit Size | — | — | 8 | — | — | — | — |
| Boundary Scan | — | — | YES | — | — | — | — |
| CPU Family | — | — | AVR RISC | — | — | — | — |
| Clock Frequency-Max | — | — | 32 MHz | — | — | — | — |
| DAC Channels | — | — | NO | — | — | — | — |
| DMA Channels | — | — | NO | — | — | — | — |
| Number of I/O Lines | — | — | 50 | — | — | — | — |
| On Chip Program ROM Width | — | — | 8 | — | — | — | — |
| PWM Channels | — | — | YES | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | — | 260 | 260 | — | 260 | 260 |
| RAM (bytes) | — | — | 4096 | — | — | — | — |
| ROM (words) | — | — | 65536 | — | — | — | — |
| ROM Programmability | — | — | FLASH | — | — | — | — |
| Speed | — | — | 32 MHz | — | — | — | — |
| Supply Voltage-Max | — | — | 3.6 V | — | — | — | — |
| Supply Voltage-Min | — | — | 1.8 V | — | — | — | — |
| uPs/uCs/Peripheral ICs Type | — | — | MICROCONTROLLER, RISC | — | — | — | — |
| ## ATXMEGA64D3-AU Alternates Showing results | — | — | Image | — | — | — | — |
| Date Of Intro | — | — | — | 2016-04-26 | — | — | — |
| Adjustable Threshold | — | — | — | YES | — | — | — |
| Analog IC - Other Type | — | — | — | LINEAR BATTERY CHARGER | ANALOG CIRCUIT | — | — |
| Input Voltage-Max | — | — | — | 8 V | — | — | — |
| Input Voltage-Min | — | — | — | 3.75 V | — | — | — |
| Number of Channels | — | — | — | 1 | — | — | — |
| Screening Level | — | — | — | AEC-Q100 | — | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | 30 | — | 30 | — |
| ## BQ25071QWDQCTQ1 Alternates Showing results | — | — | — | Image | — | — | — |
| Clock Frequency-Max (fCLK) | — | — | — | — | — | 1 MHz | — |
| Memory Density | — | — | — | — | — | 524288 bit | — |
| Memory IC Type | — | — | — | — | — | EEPROM | — |
| Memory Width | — | — | — | — | — | 8 | — |
| Number of Words | — | — | — | — | — | 65536 words | — |
| Number of Words Code | — | — | — | — | — | 64000 | — |
| Operating Mode | — | — | — | — | — | SYNCHRONOUS | — |
| Organization | — | — | — | — | — | 64KX8 | — |
| Parallel/Serial | — | — | — | — | — | SERIAL | — |
| Programming Voltage | — | — | — | — | — | 5 V | — |
| Serial Bus Type | — | — | — | — | — | I2C | — |
| Write Cycle Time-Max (tWC) | — | — | — | — | — | 5 ms | — |
| ## M24512-DFMC6TG Alternates Showing results | — | — | — | — | — | Image | — |
| Adjustability | — | — | — | — | — | — | ADJUSTABLE |
| Dropout Voltage1-Max | — | — | — | — | — | — | 0.25 V |
| Dropout Voltage1-Nom | — | — | — | — | — | — | 0.11 V |
| Line Regulation-Max (%/V) | — | — | — | — | — | — | 0.2 |
| Number of Outputs | — | — | — | — | — | — | 1 |
| Operating Temperature TJ-Max | — | — | — | — | — | — | 125 °C |
| Operating Temperature TJ-Min | — | — | — | — | — | — | -40 °C |
| Output Current1-Max | — | — | — | — | — | — | 2 A |
| Output Voltage1-Max | — | — | — | — | — | — | 5.75 V |
| Output Voltage1-Min | — | — | — | — | — | — | 0.5 V |
| Regulator Type | — | — | — | — | — | — | ADJUSTABLE 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.