1. Temperature Grade and Reliability: The core difference lies in the operating temperature range. The TLV2460IDR (Grade I, industrial) supports -40°C to 125°C, whereas the TLV2460CDR (Grade C, commercial) is limited to 0°C to 70°C. This is not merely a numerical distinction; it reflects fundamental differences in device screening and testing standards. Grade I devices undergo production testing and process control under more stringent temperature conditions to ensure parametric stability and long-term reliability across extremes. 2. Application Segmentation: Grade I is intended for harsh environments such as automotive, industrial control, and outdoor equipment. Grade C is suitable only for temperature-controlled indoor consumer electronics or general office equipment. 3. System Robustness: In applications where temperatures may exceed the 0–70°C range, using a Grade C device can lead to parametric drift or failure, introducing system risk. Summary: Both devices share identical electrical characteristics; the essential distinction is their reliability grade. The substitution decision does not depend on parametric matching, but entirely on the application’s environmental temperature limits and reliability expectations. In cost-sensitive, benign environments, the CDR may be used for cost reduction. In designs requiring high reliability, the IDR must be used, and reverse substitution is not recommended.