RS-485/422 transceiver with wide supply tolerance
The 115 kbps data rate is sized for fieldbus protocols like Modbus RTU and Profibus at moderate distances where signal integrity over long cable runs matters more than raw speed.
50 mV receiver hysteresis — noise immunity on long buses
The 50 mV of receiver hysteresis is the key spec for a designer sizing the noise margin on a long-drop RS-485 stub. On a bus with a few hundred feet of twisted pair and common-mode noise from nearby motor drives, that hysteresis prevents the receiver from chattering on the idle bus or during slow edge transitions. It is a deliberate margin, not a parasitic — it means the part can tolerate a few tens of millivolts of differential noise before the output toggles.
The through-hole PDIP-8 package is a practical choice for prototyping, socketed field-replacement modules, or low-volume production where hand-assembly and rework are common. The wide temperature range also covers cold-start conditions and thermal cycling in unventilated enclosures.