Alternatives to Texas Instruments TLC555CDG4
Texas Instruments TLC555CDG4 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 TLC555CDG4
 TLC555CDG4Texas Instruments | TLC555CDRTexas Instruments | LMC555IMX/NOPBTexas Instruments | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Pinout and package match TLC555CDG4 exactly (8-pin SOIC, same pin assignment).Physical dimensions and surface-mount package match exactly.Meets or exceeds all electrical and performance parameters since it represents the same underlying device family. | Standard 8-pin SOIC with identical pin assignments verified via datasheet pinout extraction.Shares the same 8-pin SOIC package format and physical dimensions.Exceeds all key parameters of the original, including higher frequency and wider operating temperature. | ||
 AI Summary | TLC555CDG4 by Texas Instruments: 555 Type, Timer/Oscillator (Single) IC 2.1MHz 8-SOIC. | The TLC555CDR is the direct, active tape and reel packaging equivalent to the obsolete TLC555CDG4. It utilizes the exact same silicon die, guaranteeing identical electrical, performance, and physical parameters. This is the primary and highest-confidence drop-in replacement from the original manufacturer.
| The LMC555IMX/NOPB is an upgraded, active CMOS version of the 555 timer. It offers superior electrical performance, such as a higher frequency limit of 3 MHz and a much lower power consumption of 150 µA. This is an active, long-lived family from the same manufacturer.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | Unknown | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 TLC555CDTexas Instruments | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 TL16C550CIPTG4Texas Instruments | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 TL431CDGonsemi | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 TCA9555PWRTexas Instruments | In stock | Active | 6Alternatives availableSee Alternatives |
 NE555DTexas Instruments | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 BC557CNXP | In stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments TLC555CDG4 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 TLC555CDG4 are the TLC555CDR (Texas Instruments) and the LMC555IMX/NOPB (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 TLC555CDG4 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 TLC555CDG4 (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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