SN74LS251DRAlternatives & Equivalent Parts
About SN74LS251DR
SN74LS251DR 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 | SN74LS251DRSource | ULN2003AIPWRG4 | CD4511BE |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | Small Outline Packages | — |
| Pin Count | 16 | 16 | — |
| Temperature Range | ~ 70.0°C | -40.0°C ~ 105.0°C | — |
| Price | $0.4597 | $0.1377 | — |
| Electrical Parameters | |||
| Pbfree Code | Yes | — | — |
| YTEOL | 15 | 0 | — |
| Family | LS | — | — |
| JESD-30 Code | R-PDSO-G16 | R-PDSO-G16 | — |
| JESD-609 Code | e4 | e4 | — |
| Load Capacitance (CL) | 5 pF | — | — |
| Logic IC Type | MULTIPLEXER | — | — |
| Max I(ol) | 0.008 A | — | — |
| Number of Bits | 8 | — | — |
| Number of Functions | 1 | 7 | — |
| Number of Inputs | 8 | — | — |
| Number of Outputs | 1 | — | — |
| Output Characteristics | 3-STATE | OPEN-COLLECTOR | — |
| Output Polarity | COMPLEMENTARY | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | — |
| Package Equivalence Code | SOP16,.25 | TSSOP16,.25 | — |
| Package Shape | RECTANGULAR | RECTANGULAR | — |
| Package Style | SMALL OUTLINE | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | — |
| Packing Method | TR | — | — |
| Peak Reflow Temperature (Cel) | 260 | 260 | — |
| Power Supply Current-Max (ICC) | 10 mA | — | — |
| Prop. Delay@Nom-Sup | 45 ns | — | — |
| Propagation Delay (tpd) | 45 ns | — | — |
| Qualification Status | Not Qualified | — | — |
| Supply Voltage-Max (Vsup) | 5.25 V | — | — |
| Supply Voltage-Min (Vsup) | 4.75 V | — | — |
| Supply Voltage-Nom (Vsup) | 5 V | — | — |
| Surface Mount | YES | YES | — |
| Technology | TTL | BIPOLAR | — |
| Temperature Grade | COMMERCIAL | — | — |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | — |
| Terminal Form | GULL WING | GULL WING | — |
| Terminal Pitch | 1.27 mm | 0.65 mm | — |
| Terminal Position | DUAL | DUAL | — |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | — |
| ## SN74LS251DR Alternates Showing results | Image | — | — |
| Date Of Intro | — | 1991-01-01 | — |
| Built-in Protections | — | TRANSIENT | — |
| Driver Number of Bits | — | 7 | — |
| Interface IC Type | — | BUFFER OR INVERTER BASED PERIPHERAL DRIVER | — |
| Output Current Flow Direction | — | SINK | — |
| Output Current-Max | — | 0.5 A | — |
| Output Peak Current Limit-Nom | — | 0.5 A | — |
| Turn-off Time | — | 10 µs | — |
| Turn-on Time | — | 10 µs | — |
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 SN74LS251DR 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 SN74LS251DR 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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Request Alternatives for SN74LS251DRFAQ
What is equivalent to SN74LS251DR?
Known equivalents for SN74LS251DR include ULN2003AIPWRG4, CD4511BE. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74LS251DR?
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 SN74LS251DR 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.