Reference Design for Converting RS-232 Signaling to RS-485 Signaling
Description
This reference design provides a circuit of converting RS-232 signaling to RS-485 signaling. This allows for long-distance communication: since the range supported by RS-232 is normally less than 50 feet while the range for RS-485's can exceed 1000 feet. The design implements bidirectional half-duplex communication without any software interference.
Features
- Convert RS-232 to RS-485 signaling for bidirectional half-duplex communication without any software interference with hot plug-in featureLow voltage design. The design works with both 3.3-V and 5-V supplyIndustrial-level ESD protectionRS-232 port: IEC 61000-4-2: ±8 kV contact: ±15 kV airRS-485 port: IEC 61000-4-2: ±30 kV contact: ±30 kV air; EFT: IEC 61000-4-4: 50 A; Surge: IEC 61000-4-5: 19 AIsolation: 5000 Vrms isolation protectionExtend system topology from point-to-point to multi-dropCable length up to 1000 ft
Applications
- Aircraft cockpit display
- Interconnect/distribution box
- Lab & field Instrumentation
- Data acquisition (DAQ)
- Signal generator
- Battery cell formation & test equipment
- Circuit breaker (ACB
- MCCB
- VCB)
- Wireless communications test
Product Categories
- Interface