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74LVCH16T245DGGRE4 Fiches technique(PDF) 3 Page - Texas Instruments |
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74LVCH16T245DGGRE4 Fiches technique(HTML) 3 Page - Texas Instruments |
3 / 30 page SN74LVCH16T245 www.ti.com SCES635B – JULY 2005 – REVISED APRIL 2015 5 Description (continued) Active bus-hold circuitry holds unused or undriven data inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. The bus-hold circuitry on the powered-up side always stays active. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The VCC isolation feature ensures that if either VCC input is at GND, then all outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. Copyright © 2005–2015, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: SN74LVCH16T245 |
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