Alternatives to STMicroelectronics 74LCX244TTR
STMicroelectronics 74LCX244TTR and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 74LCX244TTRSTMicroelectronics |  MC74LCX244DTR2Gonsemi | 74LCX244MTCXonsemi | +5more | |
|---|---|---|---|---|
| FFF Compatibility | Exact pin-for-pin compatibility in standard 20-TSSOP assignment layout.Matches the physical TSSOP-20 package dimensions (4.4mm width, 0.65mm pitch) exactly.Meets or exceeds all electrical ratings, including 2.0V-3.6V supply range and 24mA high/low drive strength. | Identical pinout configurations and pin assignments.Standard 20-TSSOP surface mount package.Electrically matching 2.0V to 3.6V supply and identical drive strength. | ||
 AI Summary | 74LCX244TTR by STMicroelectronics: Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP. | This is a direct, active replacement from onsemi's original logic portfolio, offering identical electrical and physical characteristics. It serves as a seamless drop-in alternative for the obsolete STMicroelectronics device.
| Derived from the Fairchild semiconductor acquisition by onsemi, this is an active 74LCX series drop-in with matching drive specifications and input tolerance levels.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP | Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP | Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP | |
| Manufacturer | STMicroelectronics | onsemi | onsemi | |
| Type | Logic | Logic | Logic | |
| Datasheet | Open | Open | Open | |
| Lead Time | 13 weeks | 28 weeks | 35 weeks | |
| Country of Origin | CN | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0090 | - | - | |
| Moisture Sensitivity Level | 3 (168 Hours) | - | - | |
| Logic Type | Buffer, Non-Inverting | - | - | |
| Output Type | 3-State | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) | - | - | |
| Voltage - Supply | 2V ~ 3.6V | - | - | |
| Number of Elements | 2 | - | - | |
| Operating Temperature | -55°C ~ 125°C (TA) | - | - | |
| Supplier Device Package | 20-TSSOP | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 74LCX08TTRSTMicroelectronics | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 74LCX14MTRSTMicroelectronics | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 74LCX14MTConsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 74LCX14Monsemi | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 74LVT244MTCXonsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
 74LVTH244MTConsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The STMicroelectronics 74LCX244TTR 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 STMicroelectronics 74LCX244TTR are the MC74LCX244DTR2G (onsemi) and the 74LCX244MTCX (onsemi), out of 7 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 74LCX244TTR 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 74LCX244TTR (STMicroelectronics) 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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