Alternatives to onsemi MC74ACT240DW
onsemi MC74ACT240DW and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 MC74ACT240DWonsemi |  74ACT240SCXonsemi |  SN74ACT240DWRTexas Instruments | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Pin-for-pin compatible in the standard 20-pin SOIC-20W package (1.27mm pitch).Matches the physical dimensions of the original 20-SOIC (7.50mm body width) package.Full functional equivalent with the same 74ACT CMOS logic levels, supply range, and 24mA output drive. | Pin-for-pin compatible in the same 20-pin SOIC (DW) package (1.27mm pitch).Matches the physical dimensions of the original SOIC-20 (7.50mm body width) package.Fully functional equivalent offering the same high-speed CMOS performance and TTL compatibility. | ||
 AI Summary | MC74ACT240DW by onsemi: Buffer, Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC. | The 74ACT240SCX is the active, direct equivalent from onsemi (utilizing the Fairchild-heritage numbering format). It serves as a seamless, high-reliability replacement with active lifecycle support.
| The SN74ACT240DWR from Texas Instruments is an active, fully-compatible second-source replacement. It provides identical electrical performance and matching physical footprints, making it a safe choice for new and existing designs.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Buffer, Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC | Buffer, Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC | Buffer, Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC | |
| Manufacturer | onsemi | onsemi | Texas Instruments | |
| Type | Logic | Logic | Logic | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 31 weeks | 9 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Logic Type | Buffer, Inverting | - | - | |
| Output Type | 3-State | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | - | - | |
| Voltage - Supply | 4.5V ~ 5.5V | - | - | |
| Number of Elements | 2 | - | - | |
| Operating Temperature | -40°C ~ 85°C (TA) | - | - | |
| Supplier Device Package | 20-SOIC | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 MC74ACT20Donsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 MC74ACT241DTonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 MC74ACT573DWR2onsemi | In stock | Obsolete | 3Alternatives availableSee Alternatives |
 MC74HC4053ADWGonsemi | In stock | Obsolete | 3Alternatives availableSee Alternatives |
 MC74LCX244DTonsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 MC74VHC157DTR2onsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi MC74ACT240DW 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 onsemi MC74ACT240DW are the 74ACT240SCX (onsemi) and the SN74ACT240DWR (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 MC74ACT240DW 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 MC74ACT240DW (onsemi) 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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