RS-232 transceiver for legacy serial links — what you need to know
The receiver hysteresis is specified at 300 mV, which gives clean switching on noisy lines typical of industrial backplanes or cable runs within a cabinet.
Supply voltage and data rate — the practical limits
At 250 kbps, the data rate covers standard UART speeds up to 115.2 kbps with margin — fine for terminal connections, programming interfaces, and low-throughput sensor links. If your application needs higher throughput, you would look at a different RS-232 family; the 250 kbps ceiling is the hard limit here.