ISO7131, ISO7140, and ISO7141 devices provide galvanic isolation up to 2500 VRMS for 1 minute per UL and 4242 VPK per VDE. ISO7131 has three channels with two forward and one reverse-direction channels. ISO7140 and ISO7141 are quad-channel isolators; ISO7140 has four forward channels, ISO7141 has three forward and one reverse-direction channels. These devices are capable of 50-Mbps maximum data rate with 5-V supplies and 40-Mbps maximum data rate with 3.3-V or 2.7-V supplies, with integrated filters on the inputs for noise-prone applications. The suffix F indicates that default output state is low; otherwise, the default output state is high.
Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. The devices have TTL input thresholds and can operate from 2.7-V, 3.3-V, and 5-V supplies. All inputs are 5-V tolerant when supplied from a 2.7-V or 3.3-V supply.
|Part number||Order||Integrated isolated power||Number of channels (#)||Forward/reverse channels||Isolation rating (Vrms)||Surge voltage capability (Vpk)||Data rate (Max) (Mbps)||Current consumption per channel (DC) (Typ) (mA)||Current consumption per channel (1 Mbps) (Typ) (mA)||Propagation delay (Typ) (ns)||Default output||VCC (Min) (V)||VCC (Max) (V)||Rating||Operating temperature range (C)|
||No||3||2/1||2500||4000||50||1.5||1.5||23||High||2.7||5||Catalog||-40 to 125|
||No||4||4/0||2500||4000||50||1.025||1.025||23||High||2.7||5||Catalog||-40 to 125|
||No||4||4/0||2500||4000||50||1.025||1.025||23||Low||2.7||5||Catalog||-40 to 125|
||No||4||3/1||2500||4000||50||1.3||1.3||23||High||2.7||5||Catalog||-40 to 125|
||No||4||3/1||2500||4000||50||1.3||1.3||23||Low||2.7||5||Catalog||-40 to 125|