Original Part
Alternative Part
1. TL3474AIDR Substitution Conclusion
The TL3474AIDR exhibits a high degree of physical compatibility with the LM2902EDR2G in terms of package (14-SOIC) and supply voltage range (4–36V vs. 3–32V), providing a direct drop-in replacement foundation. Key differences include: a significantly higher slew rate (13 V/µs; the original part does not specify this parameter, with a typical value around 0.3–0.5 V/µs) and gain bandwidth product (4 MHz), making the TL3474AIDR notably superior in dynamic response and frequency performance, suitable for signal processing applications requiring higher speed. However, its slightly higher input bias current (100 nA vs. 90 nA) and lower output current (34 mA vs. 40 mA) may have a minor impact on DC accuracy in high-impedance input configurations and on drive capability. Overall, if the application demands higher speed performance and is not critical about drive current, the TL3474AIDR is a viable upgrade replacement.
2. LM248DT Substitution Conclusion
The LM248DT is compatible with the original part in package (14-SOIC) and input offset voltage (1 mV), but it presents notable limitations in key parameters: its supply voltage range is fixed at 44V (likely single-supply or ±22V dual-supply), which does not match the original part’s wide range (3–32V), making it unsuitable for low-voltage systems (e.g., 5V or 3.3V). Additionally, its slew rate (0.5 V/µs) and gain bandwidth product (1.3 MHz) are lower, potentially resulting in weaker dynamic performance compared to the original. Its output current (25 mA) is also significantly lower, limiting drive capability. The LM248DT may only be considered as a substitute in applications with high supply voltage (e.g., above ±15V) and relaxed requirements for speed and drive; otherwise, it is not recommended.
Analysis ID: 954C-AB21000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com