Original Part
Alternative Part
1. LM124D Substitution Conclusion
The LM124D is compatible with the original LM2902S14-13 in terms of package and basic functionality; however, several key technical differences exist. The output type is differential (whereas the original likely features single-ended outputs), the maximum supply voltage is 30V (lower than the original 36V range), and the output current per channel is 30mA (lower than the original 40mA). If the application circuit relies on single-ended output signals, operates with a supply voltage above 30V, or requires higher output current to drive the load, the LM124D may not be a suitable direct replacement. Otherwise, its performance advantages in gain-bandwidth product (1.2 MHz vs. 700 kHz) and slew rate (0.4V/µs vs. 0.3V/µs) could improve system response speed, though circuit compatibility must still be verified.
2. LM248DT Substitution Conclusion
The feasibility of substituting the LM248DT for the original LM2902S14-13 is relatively low, primarily due to mismatched supply voltage requirements. The LM248DT operates at a fixed 44V supply (both minimum and maximum), whereas the original supports a wide range from 3V to 36V. Unless the application supply is precisely 44V, the LM248DT will not function properly. Additionally, its output current per channel is 25mA (lower than the original 40mA), and its current consumption is higher (2.1mA per channel vs. 1mA), which may result in insufficient drive capability and increased power dissipation. Although the LM248DT offers better performance in gain-bandwidth product (1.3 MHz) and slew rate (0.5V/µs), along with improved input offset voltage (1 mV vs. 2 mV), the strict supply voltage limitation remains the primary obstacle to substitution.
Analysis ID: 3011-DC4D000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com