IL3085 Low-Cost Isolated RS-485 Transceiver ... - NVE Corporation

IL3085Driver SectionElectrical Specifications (T min to T max and V DD = 4.5 V to 5.5 V unless otherwise stated)Parameter Symbol Min. Typ. (5) Max. Units Test ConditionsOutput voltage V O V DD V I O = 0Differential Output Voltage (2) |V OD1 | V DD V I O = 0Differential Output Voltage (2, 6) V OD3 1.5 2.3 5 V R L = 27 Ω, V DD = 4.5 VChange in Magnitude of DifferentialOutput Voltage (7) Δ|V OD | ±0.01 ±0.2 V R L = 27 Ω or 50 ΩCommon Mode Output Voltage V OC 3 V R L = 27 Ω or 50 ΩChange in Magnitude of CommonMode Output Voltage (7) Δ|V OC | ±0.01 ±0.2 V R L = 27 Ω or 50 ΩOutput Current (4)1Output Disabled, VI OmAO = 12−0.8V O = −7High Level Input Current I IH 10 μA V I = 3.5 VLow Level Input Current I IL −10 μA V I = 0.4 VAbsolute |Short-circuit Output Current| I OS 250 mA −7 V < V O < 12 VSupply CurrentV DD1 = 5 VI DD146No LoadmAV DD1 = 3.3 VI DD1 34(Outputs Enabled)Notes (apply to both driver and receiver sections):1. All voltages are with respect to network ground except differential I/O bus voltages.2. Differential input/output voltage is measured at the noninverting terminal A with respect to the inverting terminal B.3. Skew limit is the maximum propagation delay difference between any two devices at 25°C.4. The power-off measurement in ANSI Standard EIA/TIA-422-B applies to disabled outputs only and is not applied to combined inputs andoutputs.5. All typical values are at V DD1 ,V DD2 = 5 V or V DD1 = 3.3 V and T A = 25°C.6. −7 V < V CM < 12 V; 4.5 V < V DD < 5.5 V.7. Δ|V OD | and Δ|V OC | are the changes in magnitude of V OD and V OC , respectively, that occur when the input is changed from one logic state tothe other.8. This applies for both power on and power off, refer to ANSI standard RS-485 for exact condition. The EIA/TIA-422-B limit does not applyfor a combined driver and receiver terminal.9. Includes 10 ns read enable time. Maximum propagation delay is 25 ns after read assertion.10. Pulse skew is defined as |t PLH – t PHL | of each channel.11. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guaranteeperformance.12. The relevant test and measurement methods are given in the Electromagnetic Compatibility section on p. 6.13. External magnetic field immunity is improved by this factor if the field direction is “end-to-end” rather than to “pin-to-pin” (see diagram on p. 6).6NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com ©NVE Corporation