Alternatives to Texas Instruments NE555D
Texas Instruments NE555D and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for Texas Instruments NE555D
 NE555DTexas Instruments |  NE555DRTexas Instruments |  SA555DRTexas Instruments | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Standard 8-pin SOIC package with identical pinout assignments.Matches the physical dimensions and SMD mounting style of the original 8-SOIC part.Meets or exceeds all performance specifications and electrical ratings of the original bipolar timer. | Standard 8-pin SOIC package with identical pinout assignments.Matches the physical dimensions and SMD mounting style of the original 8-SOIC part.Meets or exceeds all electrical ratings while expanding thermal performance. | ||
 AI Summary | NE555D by Texas Instruments: 555 Type, Timer/Oscillator (Single) IC 500kHz 8-SOIC. | This is a direct, active drop-in replacement from Texas Instruments. It features the exact same electrical characteristics, supply voltage range (4.5V to 16V), and operating temperature range (0°C to 70°C) as the obsolete STMicroelectronics NE555D, while sharing an identical SOIC-8 footprint.
| This is an industrial-grade version of the standard 555 timer in the same SOIC-8 package from Texas Instruments. It expands the operating temperature range down to -40°C up to 85°C, making it a highly reliable and rugged drop-in alternative.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 NA555DRTexas Instruments | In stock | Active | 7Alternatives availableSee Alternatives |
| TLC555CDTexas Instruments | In stock | Obsolete | 6Alternatives availableSee Alternatives |
| TLC555CDG4Texas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments NE555D is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments NE555D are the NE555DR (Texas Instruments) and the SA555DR (Texas Instruments), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the NE555D are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The NE555D (Texas Instruments) is a part in the Clock/Timing category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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