Alternatives to Nexperia 74HCT257D
Nexperia 74HCT257D 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 Nexperia 74HCT257D
 74HCT257DNexperia | 74HCT257D-Q100JNexperia USA Inc. |  SN74HCT257DRTexas Instruments | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Standard SOIC-16 package (SOT109-1) with an identical pinout layout and dimensions.Same surface-mount package shape, body size, and terminal pitch.Electrically identical 4.5V to 5.5V logic with 6mA output drive, but with added automotive qualification. | Standard 16-SOIC footprint with identical terminal mapping.Same physical body width and dimensions.Functions identically with the same 4.5V to 5.5V supply voltage and 6mA output drive capability. | ||
 AI Summary | 74HCT257D by Nexperia: Multiplexer 4 x 2:1 16-SO. | This is the direct automotive-grade sibling from the original manufacturer, offering an identical pinout and layout footprint while retaining full electrical compatibility. Its AEC-Q100 qualification guarantees high reliability in demanding environments, making it a drop-in replacement with no PCB redesign required.
| This is a highly reliable commercial-grade drop-in alternative from Texas Instruments that is actively produced. It matches the original's physical footprint and logic specifications pin-for-pin, serving as a seamless second-source replacement.
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| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 SN74HCT125DTexas Instruments | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 74HCT541DNexperia | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 74HCT123DNexperia | In stock | Obsolete | 3Alternatives availableSee Alternatives |
| 74AHCT541DNexperia | Non-stock | Obsolete | 5Alternatives availableSee Alternatives |
 SN74HC574DWTexas Instruments | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
 SN74HC245DWTexas Instruments | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Nexperia 74HCT257D 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 Nexperia 74HCT257D are the 74HCT257D-Q100J (Nexperia USA Inc.) and the SN74HCT257DR (Texas Instruments), out of 3 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 74HCT257D 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 74HCT257D (Nexperia) is a part in the Logic category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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