Octal UART for 3.3 V and 5 V supply voltage - Application: Data Communication ; Function: Receivers/Transmitters ; Number of pins: 84 ; Operating temperature: -40~85 Cel; Receiver/Transmitter type: Octal UARTs; Package: SOT189-2 (PLCC84); Container: Tube Dry Pack
A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the signal traces short and away from the power plane to minimize noise and EMI.
Use a reliable communication protocol like SPI or I2C, and ensure proper signal termination and filtering. Also, implement error detection and correction mechanisms to handle data transmission errors.
The device has a thermal pad on the bottom, so ensure good thermal conductivity by using a thermal interface material and a heat sink if necessary. Keep the device away from heat sources and ensure good airflow.
Use proper shielding, grounding, and filtering techniques to minimize EMI. Ensure that the device is placed in a shielded enclosure, and use EMI filters on the power and signal lines.
The device requires a specific power-up sequence, with the core voltage (VDD) ramping up before the I/O voltage (VDDIO). Ensure a slow voltage ramp-up (typically 1-2 ms) to prevent latch-up and damage.