SN74ALS251NAlternatives & Equivalent Parts
About SN74ALS251N
SN74ALS251N 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 | SN74ALS251NSource | SN54ALS251J | SN74ALS251NS | SN74ALS151N | SN74ALS251D | SN74ALS151D |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Dual-In-Line Packages | Ceramic Dual-In-Line Packages | Dual-In-Line Packages | Dual-In-Line Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 16 | 16 | 16 | 16 | 16 | 16 |
| Temperature Range | ~ 70.0°C | -55.0°C ~ 125.0°C | — | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C |
| Price | $1.0773 | $14.4505 | $0.6634 | $0.5400 | $0.5200 | $0.7998 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | — | ACTIVE | OBSOLETE | OBSOLETE |
| Electrical Parameters | ||||||
| YTEOL | 15 | 15 | — | 15 | 0 | 0 |
| Family | ALS | ALS | — | ALS | ALS | ALS |
| JESD-30 Code | R-PDIP-T16 | R-GDIP-T16 | — | R-PDIP-T16 | R-PDSO-G16 | R-PDSO-G16 |
| JESD-609 Code | e4 | e0 | — | e4 | e4 | e4 |
| Load Capacitance (CL) | 50 pF | 50 pF | — | 50 pF | 50 pF | 50 pF |
| Logic IC Type | MULTIPLEXER | MULTIPLEXER | — | MULTIPLEXER | MULTIPLEXER | MULTIPLEXER |
| Max I(ol) | 0.024 A | 0.012 A | — | 0.024 A | 0.024 A | 0.024 A |
| Number of Bits | 8 | 8 | — | 8 | 8 | 8 |
| Number of Functions | 1 | 1 | — | 1 | 1 | 1 |
| Number of Inputs | 8 | 8 | — | 8 | 8 | 8 |
| Number of Outputs | 1 | 1 | — | 1 | 1 | 1 |
| Output Characteristics | 3-STATE | 3-STATE | — | — | 3-STATE | — |
| Output Polarity | COMPLEMENTARY | COMPLEMENTARY | — | COMPLEMENTARY | COMPLEMENTARY | COMPLEMENTARY |
| Package Body Material | PLASTIC/EPOXY | CERAMIC, GLASS-SEALED | — | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 | DIP16,.3 | — | DIP16,.3 | SOP16,.25 | SOP16,.25 |
| Package Shape | RECTANGULAR | RECTANGULAR | — | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | IN-LINE | — | IN-LINE | SMALL OUTLINE | SMALL OUTLINE |
| Packing Method | TUBE | TUBE | — | TUBE | TUBE | TUBE |
| Power Supply Current-Max (ICC) | 10 mA | 10 mA | — | 12 mA | 10 mA | 12 mA |
| Prop. Delay@Nom-Sup | 24 ns | 24 ns | — | 24 ns | 24 ns | 24 ns |
| Propagation Delay (tpd) | 24 ns | 34 ns | — | 24 ns | 24 ns | 24 ns |
| Qualification Status | Not Qualified | Not Qualified | — | Not Qualified | Not Qualified | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.5 V | 5.5 V | — | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min (Vsup) | 4.5 V | 4.5 V | — | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage-Nom (Vsup) | 5 V | 5 V | — | 5 V | 5 V | 5 V |
| Surface Mount | NO | NO | — | NO | YES | YES |
| Technology | TTL | TTL | — | TTL | TTL | TTL |
| Temperature Grade | COMMERCIAL | MILITARY | — | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Tin/Lead (Sn/Pb) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | — | THROUGH-HOLE | GULL WING | GULL WING |
| Terminal Pitch | 2.54 mm | 2.54 mm | — | 2.54 mm | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | — | DUAL | DUAL | DUAL |
| Pbfree Code | — | Yes | — | Yes | — | — |
| Peak Reflow Temperature (Cel) | — | — | — | — | 260 | 260 |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | — | NOT SPECIFIED | NOT SPECIFIED |
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 5 alternatives for SN74ALS251N — response within 24 hours.
Quick Links
Multiplexer, ALS Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, TTL, CDIP16
Multiplexer, ALS Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, TTL, PDSO16
Multiplexer, ALS Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, TTL, PDIP16
Multiplexer, ALS Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, TTL, PDSO16
Multiplexer, ALS Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, TTL, PDSO16
Why Look for Alternatives?
Finding alternatives for SN74ALS251N 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 SN74ALS251N 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 SN74ALS251N?
Known equivalents for SN74ALS251N include SN54ALS251J, SN74ALS251NS, SN74ALS151N. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74ALS251N?
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 SN74ALS251N 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.