Original Part
Alternative Part
1. LM258D Substitution Conclusion
The LM258D is generally viable as a substitute for the LM2904S-13, but several key differences must be considered: its higher gain-bandwidth product (1.1 MHz vs. 700 kHz) provides superior high-frequency response, making it suitable for applications requiring greater bandwidth. The slightly higher input offset voltage (3 mV vs. 2 mV) may marginally degrade DC accuracy; the impact on error should be evaluated in precision amplification circuits. The lower supply current (500 µA vs. 700 µA per channel) helps reduce system power consumption. However, the maximum supply voltage is slightly lower (32 V vs. 36 V); direct substitution is not recommended if the original design operates close to 36 V. The package is identical (8-SOIC) and pin-compatible. In applications where the supply voltage does not exceed 32 V and offset voltage requirements are not stringent, the LM258D can serve as a power-efficient and performance-comparable alternative.
2. MC1458D Substitution Conclusion
The MC1458D has limited feasibility as a substitute for the LM2904S-13 due to significant technical discrepancies: its higher input bias current (80 nA vs. 20 nA) introduces greater error in high-impedance input circuits, affecting signal integrity. The substantially higher supply current (3.4 mA vs. 700 µA per channel) leads to a notable increase in power consumption, making it unsuitable for low-power designs. The lower output current (25 mA vs. 40 mA) reduces drive capability, potentially limiting load handling. The supply voltage range is narrower (10–30 V vs. 3–36 V); the minimum voltage is raised to 10 V, preventing use in low-voltage applications, while the maximum is reduced to 30 V, restricting high-voltage scenarios. Although slew rate and gain-bandwidth product are slightly better (0.5 V/µs and 1 MHz), overall parameter compatibility is poor. The MC1458D is only recommended for non-critical applications insensitive to power consumption, voltage range, and input error.
Analysis ID: 2AE2-6D50000
Based on part parameters and for reference only. Not to be used for procurement or production.
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