1. TC913ACOA713 Substitution Conclusion This component is not a drop-in replacement for the LM2904D due to fundamental differences in core architecture and application scope. The TC913ACOA713 is a zero-drift amplifier featuring extremely low input offset voltage (5µV) and input bias current (90pA), making it suitable for high-precision DC signal conditioning, such as sensor amplification. However, this comes at the expense of a narrow supply range (7–16V), weak output drive capability (10mA), and higher cost. In contrast, the LM2904D is a general-purpose standard amplifier whose advantages lie in its wide voltage range (3–26V) and strong output drive (40mA), fitting applications where high precision is not critical. Substitution may be considered only if the system demands stringent precision and operates within compatible supply conditions—while noting the output current limitation. Otherwise, significant differences in supply compatibility, drive capability, and cost make direct substitution likely to result in performance mismatch or operational failure.