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LM2904-Q1: Output swing from rail

Manu Chang
Intellectual 880 points
Part Number: LM2904-Q1
Other Parts Discussed in Thread: LM2904BA-Q1,

Hi,

Customer have a question about datasheet for LM2904-Q1 and LM2904BA-Q1.

As showed in the following figure, why the test condition of output swing from rail differs from each other?  How to understand it ？

Output Swing from rail for LM2904-Q1

Output Swing from rail for LM2904BA-Q1

Thanks!

Manu

  • 0
    TI__Guru*** 140136 points

    Hello, Manu

    These two devices were released many decades apart. Standards and customs in creating specifications have changed over that time.

    The only real difference in performance is sinking current at low output voltage.

    LM2904-Q1 (A,V) can be as little as 12uA at 200mV for output ; without those letters it could be even less current.

    LM2904BA-Q1 must provide 50uA at 150mV (or less voltage)