Part Number: SN75LBC176
Hello,
For a design in production, we use a two SN75LBC176 connected to a micro-processor for a RS422 communication link (UART). One component is configured in TX mode only and the other component is configured only in RX mode.At power up all the processor i/o are in input mode, after power-up the i/o are configured in Input or Output. During the power-up stage i need that the TX line shall be at high level (default UART state). In the processor i/o pad there is no weak pull-up. My question is about the SN75LBC176 datasheet. I try to find if there is a weak-pull-up or not but unfortunately I don't find the answer in the datasheet, Could you help me to find the information. At power up some board are at low level for the D input and other board are at high level. It seems to be link to the SN75LBC176. Could you help me to solve this issue.