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SN74AVCH8T245 Folha de dados(PDF) 4 Page - Texas Instruments |
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SN74AVCH8T245 Folha de dados(HTML) 4 Page - Texas Instruments |
4 / 19 page SN74AVCH8T245 8BIT DUALSUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS SCES565F − APRIL 2004 − REVISED APRIL 2005 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions (see Notes 4 through 6) VCCI VCCO MIN MAX UNIT VCCA Supply voltage 1.2 3.6 V VCCB Supply voltage 1.2 3.6 V High-level 1.2 V to 1.95 V VCCI × 0.65 VIH High-level input voltage Data inputs 1.95 V to 2.7 V 1.6 V VIH input voltage Data inputs 2.7 V to 3.6 V 2 V Low-level 1.2 V to 1.95 V VCCI × 0.35 VIL Low-level input voltage Data inputs 1.95 V to 2.7 V 0.7 V VIL input voltage Data inputs 2.7 V to 3.6 V 0.8 V High-level DIR 1.2 V to 1.95 V VCCA × 0.65 VIH High-level input voltage DIR (referenced to VCCA) 1.95 V to 2.7 V 1.6 V VIH input voltage (referenced to VCCA) 2.7 V to 3.6 V 2 V Low-level DIR 1.2 V to 1.95 V VCCA × 0.35 VIL Low-level input voltage DIR (referenced to VCCA) 1.95 V to 2.7 V 0.7 V VIL input voltage (referenced to VCCA) 2.7 V to 3.6 V 0.8 V VI Input voltage 0 3.6 V VO Output voltage Active state 0 VCCO V VO Output voltage 3-state 0 3.6 V 1.2 V −3 1.4 V to 1.6 V −6 IOH High-level output current 1.65 V to 1.95 V −8 mA IOH High-level output current 2.3 V to 2.7 V −9 mA 3 V to 3.6 V −12 1.2 V 3 1.4 V to 1.6 V 6 IOL Low-level output current 1.65 V to 1.95 V 8 mA IOL Low-level output current 2.3 V to 2.7 V 9 mA 3 V to 3.6 V 12 ∆t/∆v Input transition rise or fall rate 5 ns/V TA Operating free-air temperature −40 85 °C NOTES: 4. VCCI is the VCC associated with the data input port. 5. VCCO is the VCC associated with the output port. 6. All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. |
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