SCPU046 September   2021 TCA9536 , TCA9537

 

  1.   Trademarks
  2. 1Introduction
  3. 2Features
  4. 3Adjustable pull-up resistors
  5. 4Device locations
  6. 5Schematic
  7. 6Revision History

3 Adjustable pull-up resistors

TCA9536EVM comes with adjustable pull-up resistors which allows for the user to select from a 4.7 kΩ down to a ~515 Ω resistor. The pull-up resistor selectors (J4 and J8)are shown in Figure 3-1.

Table 3-1 Effective pull-up resistor values table
Pull-up resistor (Ω)Equivalent pull-up resistance (Ω)
4.7 k || 2 k1.4 k
4.7 k || 820~699
2k || 820~580
4.7 k || 2k || 820~515
GUID-20210914-SS0I-DDVC-MRBG-QV70KTLLBM9X-low.pngFigure 3-1 Adjustable pull-up resistors