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LMH1981: Output Terminal Current

Part Number: LMH1981

Hi, Team,

What is the maximum current value that can flow out from the output terminal?

If 1 KΩ terminating resistor is added to the HSOUT output of the pin, current of 3.3 mA (when VCC = 3.3 V) flows, is there no problem?
The maximum current value of the output pin was not found in the electrical characteristics table in the data sheet.

Best Regards,
Satoshi Yone

  • Hi Satoshi,

    I found a description in datasheet

    "Output Routing

    The output signal paths should be routed using short, direct traces to minimize parasitic effects that may degrade

    these high-speed logic signals. All output signals should have a resistive load of about 10 kΩ and capacitive load

    of less than 10 pF, including parasitic capacitances for optimal signal quality. This is especially important for the

    horizontal sync output, in which it is critical to minimize timing jitter. Each output can be protected by current

    limiting with a small series resistor, like 100Ω."

    Best Regards,

    Shawn

  • Hi, Shawn,

    Thanks for the replay. Is there no data for the maximum current limit?

    Best Regards,
    Satoshi Yone
  • Hi Satoshi,
    We do not have such data in production.
    www.ti.com/.../snlm154
    The IBIS model simulation could show what's happen in a heavy load.

    Regards,
    Shawn