DESCRIPTION 

ISO7131, ISO7140, and ISO7141 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, ISO7141 has three forward and one reversedirection channels. These devices are capable of 50 Mbps maximum data rate with 5V supplies and 40Mbps maximum data rate with 3.3V or 2.7V 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 (see Table 1). 

Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2 ) insulation barrier. Used in conjunction 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 5V tolerant when supplied from a 2.7V or 3.3V supply.

FEATURES

· Maximum Signaling Rate:50 Mbps(with 5V Supplies)
· Robust Design With Integrated Noise Filter
· Default Output Low Option (Suffix F)
· Low Power Consumption, Typical lcc per Channel(with 3.3 V Supplies):
-ISO7131:1.5mA at 1 Mbps,2.6mA at 25 Mbps
-ISO7140:1 mA at 1 Mbps,2.3mA at 25 Mbps
-ISO7141:1.3 mA at 1 Mbps, 2.6mA at 25Mbps
· Low Propagation Delay:23 ns Typical (3.3 V Supplies)
· Wide Temperature Range:-40℃ to 125℃·50 kV/us Transient Immunity, Typical
· Long Life with SiO2lsolation Barrier
· Operates From 2.7 V,3.3 V and 5 V Supply and Logic Levels

· Small QSOP-16 Package

APPLICATIONS
·General-Purpose lsolation
-Industrial Fieldbus
-Profibus
-Modbus TM
-DeviceNet Data Buses
-RS-232,RS-485
-Serial Peripheral Interface

Feature

(Picture: Diagram)