TLC555QDR
Texas Instruments
Needs validationlow risk
Automotive-grade version with a wider operating temperature range, offering a direct upgrade path.
Best Alternatives to TLC555IDR
The TLC555IDR is a popular industrial-grade LinCMOS timer known for low power and a wide supply range. Finding a suitable replacement involves matching its electrical characteristics and package.
AI replacement insight
Electrical risklow
Low for TLC555xDR series; high for other technologies like SE555DR.
Package risklow
All viable alternatives are in the same SOIC-8 package.
Can it be replaced directly?
The TLC555QDR is the most direct replacement, offering superior temperature performance in the same package. The TLC555CDR is a downgrade in temperature and should only be used in commercial environments.
Best replacement path
Upgrade to the automotive-grade TLC555QDR for a wider temperature margin and pin-compatibility.
Main risk
The primary risk is selecting a part with an insufficient operating temperature range for the application.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | TLC555IDR | TLC555QDR | TLC555CDR | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 — Package matches.; TLC555CDR: Package matches. | |
| Temperature | -40°C to 85°C | -40°C to 125°C | 0°C to 70°C | -40°C to 125°C / 0°C to 70°C — Wider automotive temperature range.; TLC555CDR: Narrower commercial temperature range. | |
| Voltage | 2 V to 15 V | 2 V to 15 V | 2 V to 15 V | 2 V to 15 V — Supply voltage range matches.; TLC555CDR: Supply voltage range matches. | |
| Technology | LinCMOS | LinCMOS | - | LinCMOS — Technology matches. |
Application & sourcing insights
Questions & answers
The TLC555QDR is an excellent upgrade, offering a wider automotive-grade temperature range while being pin-compatible. For cost-sensitive commercial applications, the TLC555CDR is an option, but its temperature range is narrower.