QT2022/32 - Data Sheet: DS3051
8.4 Low-Speed Output Pins (QT2022 and QT2032)
The pins described in this section are common to both the QT2022 and QT2032. All pins have the same function
for both products.
All the low-speed output pins have the same type of open drain driver. An external 10-22kΩ pullup resistor to 1.2V
is expected. The open drain configuration allows these signals to be wire ORed with other active low open drain
disable signals on the module. There are no internal pullups or pulldowns on these pins.
Figure 16: Open Drain Driver Configuration
1.2V
10-22 kΩ
pin
load capacitance
< 320pF
open drain
driver
COREGND
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