Lantronix IntelliBox-I/O IntelliBox-I/O - User Guide - Page 178

E: Isolated I/O Specifications Absolute Maximum Ratings Parameters Symbols Value Units Notes Operating temperature Output characteristics of Digital I/O ports (see note 5) Load current when ON Breakdown load voltage when OFF Input characteristics of Digital I/O ports (see note 5) TOPR IL VL -40 to C 75 120 mA 1 +/-50 VDC Input current II 8 mA 2 Input voltage VI 10 VDC 2, 4 Input reverse voltage Transient voltage suppression on digital I/O (see note 5) VI -50 VDC Peak pulse power dissipation on 10/1000 usec Waveform Isolation Characteristics of digital I/O ports (see note 5) PTVS 600 W Between primary to secondary of IO ports VIOISO1 1500 VAC Between adjacent IO Ports Isolation characteristics of relay port (see note 5) VIOISO2 300 VAC Between contacts and coil (inner circuit) Between open contacts Between relay port and IO Ports VRLYISO1 VRLYISO2 VRLYISO3 1500 300 1500 VAC VAC VAC Stressing the device above the rating listed in the Absolute Maximum Ratings table may cause permanent damage to the IO ports. Exposure to Absolute Maximum Rating conditions for extended periods may affect the IO port reliability. Notes: 1. Solid state relay output; can source or sink current. See Figure C-1. 2. Opto-isolator with emitter input and a series resistor to limit current. See Figure C-2. 3. To realize a logic high input, a typical current of II = 1mA is required; that translates to a minimum of VIH = 3V. 4. For VI = VIH > 10 VDC an external series resistor is required as shown in Table C-1. 5. Connect RELAY and DIGITAL IO Ports only to Class III or Class 2 circuit. IntelliBox-I/O 2100 User Guide 178