HomedatasheetISO7240CDWR

ISO7240CDWR Datasheet

Isolator Interface IC
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Description

The ISO7240, ISO7241 and ISO7240CDWR are quad-channel digital isolators with multiple channel configurations and output enable functions. These devices have logic input and output buffers separated by TI’s silicon dioxide (SiO2) isolation barrier. Used in conjunction with isolated power supplies, these devices block high voltage, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry. The ISO7240 has all four channels in the same direction while the ISO7241 has three channels the same direction and one channel in opposition. The ISO7240CDWR has two channels in each direction. The C option devices have TTL input thresholds and a noise-filter at the input that prevents transient pulses from being passed to the output of the device. The M option devices have CMOS Vcc/2 input thresholds and do not have the input noise-filter or the additional propagation delay. The ISO7240CF has an input disable function on pin 7, and a selectable high or low failsafe-output function with the CTRL pin (pin 10). The failsafe-output is a logic high when a logic-high is placed on the CTRL pin or it is left unconnected. If a logic-low signal is applied to the CTRL pin, the failsafe-output becomes a logic-low output state. The ISO7240CF input disable function prevents data from being passed across the isolation barrier to the output. When the inputs are disabled, the outputs are set by the CTRL pin. ISO7240CDWR Features • Selectable Failsafe Output (ISO7240CF)• 4 kV ESD Protection• Typical 25-Year Life at Rated Working Voltage ISO7240CDWR Applications • Industrial Fieldbus• Computer Peripheral Interface• Servo Control Interface• Data Acquisition
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Parameters

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Manufacturer information

ROHM
Warm Hint

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