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SN74LVTH16543DGGR Datasheet(PDF) 2 Page - Texas Instruments |
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SN74LVTH16543DGGR Datasheet(HTML) 2 Page - Texas Instruments |
2 / 14 page SN54LVTH16543, SN74LVTH16543 3.3-V ABT 16-BIT REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS699D – JULY 1997 – REVISED APRIL 1999 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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. These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The SN54LVTH16543 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74LVTH16543 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE† (each 8-bit section) INPUTS OUTPUT CEAB LEAB OEAB A B H X X X Z X XH X Z L HL X B0‡ L LL L L L L L H H † A-to-B data flow is shown; B-to-A flow control is the same except that it uses CEBA, LEBA, and OEBA. ‡ Output level before the indicated steady-state input conditions were established |
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