Alternatives to onsemi 74AC74SCX
onsemi 74AC74SCX and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 74AC74SCXonsemi | MC74AC74DR2Gonsemi |  SN74AC74DRTexas Instruments | +2more | |
|---|---|---|---|---|
| FFF Compatibility | The pinout assignments and 14-pin count are exactly identical to the original part, confirmed by datasheet analysis.Both parts utilize the standard 14-SOIC (150 mil width) surface-mount package.All electrical specifications, speed grades, supply ranges, and current capabilities are identical. | The pinout assignments and 14-pin count are exactly identical to the original part.Both parts utilize the standard 14-SOIC (150 mil width) surface-mount package.The SN74AC74DR fully meets or exceeds all original electrical, speed, and voltage specifications. | ||
 AI Summary | 74AC74SCX by onsemi: Flip Flop 2 Element D-Type 1 Bit Positive Edge 14-SOIC (0.154", 3.90mm Width). | This is the manufacturer's active, direct replacement for the obsolete 74AC74SCX. It provides identical physical and electrical specifications under the modernized MC74 suffix scheme, ensuring an completely risk-free transition with no layout changes.
| This is a direct, active second-source replacement from Texas Instruments. It fully matches the electrical performance, high-speed capability, 24mA output drive, and pinout of the original part, making it an excellent drop-in choice.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Flip Flop 2 Element D-Type 1 Bit Positive Edge 14-SOIC (0.154", 3.90mm Width) | Flip Flop 2 Element D-Type 1 Bit Positive Edge 14-SOIC (0.154", 3.90mm Width) | Flip Flop 2 Element D-Type 1 Bit Positive Edge 14-SOIC (0.154", 3.90mm Width) | |
| Manufacturer | onsemi | onsemi | Texas Instruments | |
| Type | Logic | Logic | Logic | |
| Datasheet | Open | Open | Open | |
| Lead Time | 20 weeks | 13 weeks | 9 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | D-Type | - | - | |
| Function | Set(Preset) and Reset | - | - | |
| Output Type | Complementary | - | - | |
| Trigger Type | Positive Edge | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | - | - | |
| Clock Frequency | 160 MHz | - | - | |
| Voltage - Supply | 2V ~ 6V | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 74AC373SCXonsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 74ACT02SCXonsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
| 74ABT245CSCXonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| 74ACT151SCX_NLonsemi | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
 74ACT16240SSConsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 74AC16374DLTexas Instruments | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi 74AC74SCX 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 74AC74SCX are the MC74AC74DR2G (onsemi) and the SN74AC74DR (Texas Instruments), out of 4 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 74AC74SCX 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 74AC74SCX (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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