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Original question:

DS80PCI102: 4-Level Input Pins internal Pull-Up & Pull-Down resistor variation

DS80PCI102: 4-Level Input Threshold Tolerance

Koshi Ninomiya
Expert 5745 points
Part Number: DS80PCI102


Hi Team,

DS80PCI102 has 4-Level Input Pins, and there are 4-Level Input Thresholds at 7.3.1 4-Level Input Configuration Guidelines of datasheet.

Typical 4-level input thresholds:
• Level 1 to 2 = 0.2 VIN or VDD
• Level 2 to 3 = 0.5 VIN or VDD
• Level 3 to 4 = 0.8 VIN or VDD

Could you let me know the tolerance of those thresholds?
• Level 1 to 2 = 0.2 +/- ? VIN or VDD
• Level 2 to 3 = 0.5 +/- ? VIN or VDD
• Level 3 to 4 = 0.8 +/- ? VIN or VDD

Best Regards,

Koshi Ninomiya

  • 0
    TI__Mastermind 43795 points

    Hi Koshi,

    The threshold tolerance is ~ 10%

    If you look at the normal levels and thresholds between the levels for the 3.3V case.

    3.25V - High level with 1K to Vin

    2.64V - Threshold (0.8xVin)

    2.20V - Float level

    1.65V - Threshold (0.5xVin)

    1.09V - R level with 20K to GND

    0.66V - Threshold (0.2xVin)

    0.10V - L level with 1K to GND

    Regards,

    Lee