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Description
The IL3122-3E low cost passive input RS-422 isolated transceiver from NVE is designed to galvanically isolate bidirectional data communication over balanced transmission lines. The IL3122 series delivers at least 1.5V into a 54Ω load for excellent data integrity over long cables, and is also compatible with 3V input supplies, allowing interfacing to standard microcontrollers without additional level shifting. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. This particular device uses NVE’s patented IsoLoop spintronic Giant Magnetoresistance (GMR) technology and comes in a 0.15″ 16-pin SOIC package.
- Surface-mount low cost passive input RS-422 isolated transceiver
- Power supply VDD1 3.3V to 5V, VDD2 4.5V to 5.5V
- Data rate of 5Mbps
- Bus ESD protection of 15kV
- Isolation of 2,500 VRMS (1 minute)
- Temperature range of −40°C to +85°C
- Typical common mode rejection 20kV/μs
- No carrier or clock for low EMI emissions and susceptibility
- Thermal shutdown protection
- Typical propagation delay of 90ns (5V)
- Coil input resistance of 85Ω typical
- UL 1577 recognised; IEC 60747-5-5 (VDE 0884) certified
- 0.15″ 16-pin SOIC package
The IL3122 has current limiting and thermal shutdown features to protect against output short circuits and bus contentions that may cause excessive power dissipation, and also incorporate a “fail-safe if open” design, ensuring a logic high on R if the bus lines are disconnected or “floating.”
Typical applications for the IL3122 series include:
- P.O.S. Systems
- Security networks
- Building environmental controls
- Industrial control networks
- Gaming systems
- Factory automation
The below table gives the recommended operating conditions for the NVE IL3122 high speed passive input RS-485 differential bus transceiver series including the IL3122-3E:
