Interface forum

Darsana,

RS232 is a hardware protocol. It does not define an error rate nor does it define a software to be used with it (most people use UART). 

In UART, the expectation is the baudrate mismatches should be 2.5% or less. But some protocols include CRCs that can rebuild a bad byte (which would make errors acceptable) or identify if a byte is bad (UART only has a parity CRC). 

Acceptable error rate depends on the end system (if we're talking about data packets). 

The device itself, should not be damaged or misbehaving across PCBs. (I'm saying TI devices should not fail from normal use, we run them through ATE programs which should filter out any bad devices...)

-Bobby