SN74AS21NSAlternatives & Equivalent Parts
About SN74AS21NS
SN74AS21NS is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | SN74AS21NSSource | SN74AUP2G02DCUR | SN74AS21D |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 14 | 8 | 14 |
| Temperature Range | ~ 70.0°C | -40.0°C ~ 85.0°C | ~ 70.0°C |
| Price | $1.5900 | $0.2137 | $0.4900 |
| Electrical Parameters | |||
| Date Of Intro | 2018-09-27 | — | — |
| YTEOL | 0 | 15 | 15 |
| Family | AS | AUP/ULP/V | AS |
| JESD-30 Code | R-PDSO-G14 | R-PDSO-G8 | R-PDSO-G14 |
| JESD-609 Code | e4 | e4 | e4 |
| Load Capacitance (CL) | 50 pF | — | 50 pF |
| Logic IC Type | AND GATE | NOR GATE | AND GATE |
| Max I(ol) | 0.02 A | 0.004 A | 0.02 A |
| Number of Functions | 2 | 2 | 2 |
| Number of Inputs | 4 | — | 4 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH | SMALL OUTLINE |
| Packing Method | TUBE | TR | TUBE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 |
| Power Supply Current-Max (ICC) | 12 mA | — | 12 mA |
| Prop. Delay@Nom-Sup | 6 ns | — | 6 ns |
| Propagation Delay (tpd) | 6 ns | — | 6 ns |
| Schmitt Trigger | NO | NO | NO |
| Supply Voltage-Max (Vsup) | 5.5 V | 3.6 V | 5.5 V |
| Supply Voltage-Min (Vsup) | 4.5 V | 0.8 V | 4.5 V |
| Supply Voltage-Nom (Vsup) | 5 V | 3.3 V | 5 V |
| Surface Mount | YES | YES | YES |
| Technology | TTL | CMOS | TTL |
| Temperature Grade | COMMERCIAL | INDUSTRIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 0.5 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 |
| Pbfree Code | — | Yes | Yes |
| Package Equivalence Code | — | TSSOP8,.12,20 | SOP14,.25 |
| Qualification Status | — | Not Qualified | Not Qualified |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Why Look for Alternatives?
Finding alternatives for SN74AS21NS 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 SN74AS21NS 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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What is equivalent to SN74AS21NS?
Known equivalents for SN74AS21NS include SN74AUP2G02DCUR, SN74AS21D. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74AS21NS?
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 SN74AS21NS 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.