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Is there any problem with waveforms with input signals rising or falling gently?

For example, for Toshiba IC couplers TLP2355 and TLP2358, which are suitable for transmitting several-Mbps signals, Toshiba recommends drive signals making both the rise time and fall time of input signals 0.5μs or less. Should the waveform have a steeper slope compared with the case of about 0.5μs, the output potential will stay around the medium potential longer, causing output oscillation and through-current. If the input waveform has a steep slope, in some cases, the waveform must be shaped by incorporating a logic IC at the first-half stage.

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·Before creating and producing designs and using, customers must also refer to and comply with the latest versions of all relevant TOSHIBA information and the instructions for the application that Product will be used with or for.