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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.
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Is it OK to leave the bidirectional pin of a bidirectional bus buffer open when it is floating?

For bidirectional bus buffers such as 74xxx245, it is necessary to fix the input level to a known value by means of an external pull-up or pull-down resistor when the bidirectional pin is floating (in the high-impedance state). Unused bidirectional pins must always be connected to either VCC or GND.
ICs with a bus-hold circuit (74VCXH etc.) do not require an external pull resistor.

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