ISO7240CFDWR datasheet(7/46 Pages) TI1

7 / 46 page

ISO7240CF, ISO7240C, ISO7240M

ISO7241C, ISO7241M, ISO7242C, ISO7242M

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SLLS868R – SEPTEMBER 2007 – REVISED SEPTEMBER 2015

5 Description (Continued)

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 or VCC1 is powered down, the outputs are set by the CTRL pin.

These devices may be powered from 3.3-V or 5-V supplies on either side in any combination. Note that the

signal input pins are 5-V tolerant regardless of the voltage supply level being used.

These devices are characterized for operation over the ambient temperature range of –40°C to 125°C.

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Product Folder Links: ISO7240CF ISO7240C ISO7240M ISO7241C ISO7241M ISO7242C ISO7242M

ISO7240CFDWR データシート(PDF) 7 Page - Texas Instruments