ZHCSAY5D march 2013 – april 2021 UCD3138064
PRODUCTION DATA
The RESET pin must have one at least 2.2 µF low ESL capacitor locally decoupled with SGND plane. As shown in RESET Pin Connection, this capacitor must be placed very close to the device RESET pin. TI highly recommends using a small resistance (such as 2.2 kΩ) to connect the RESET pin (pin 11 for UCD3138RGC) with V33DIO (pin 9 for UCD3138RGC). The resistor must be placed close to the RESET pin, as well. The grounding point of the capacitor must be tied to SGND plane locally by a ground via, which is generally larger than a signal via.