Part Number: LM2904
Other Parts Discussed in Thread: LM158-N
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Ting,
There is no timing requirement for LM2904. However, the V- supply must not go positive by more than 300mV during power up, power down, or fault conditions (shorts, opens). If there is such a possibility, do not short any input (or output) to ground.
Ting,
Was this 2V and 3V injected on the V- supply?
If you do not want "smoke" and "blast" try adding a 1k ohms resistor between input and ground.