SCPS290A April 2024 – June 2024 TCAL6416R
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The pull-up resistors, RP, for the SCL and SDA lines need to be selected appropriately and take into consideration the total capacitance of all targets on the I2C bus. The minimum pull-up resistance is a function of V, VOL,(max), and IOL:
The maximum pull-up resistance is a function of the maximum rise time, tr (120ns for fast-mode-plus operation, fSCL = 1MHz) and bus capacitance, Cb:
The maximum bus capacitance for an I2C bus must not exceed 400pF for standard-mode or fast-mode operation, or 550pF for fast-mode-plus. The bus capacitance can be approximated by adding the capacitance of the TCAL6416R, Ci for SCL, or Cio for SDA. Plus the capacitance of wires, connections, traces, and the capacitance of additional targets on the bus.