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74LVCH8T245DBQRG4 Fiches technique(PDF) 4 Page - Texas Instruments |
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74LVCH8T245DBQRG4 Fiches technique(HTML) 4 Page - Texas Instruments |
4 / 22 page www.ti.com Recommended Operating Conditions (1) (2) (3) SN74LVCH8T245 8-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS SCES637A – AUGUST 2005 – REVISED FEBRUARY 2007 VCCI VCCO MIN MAX UNIT VCCA 1.65 5.5 Supply voltage V VCCB 1.65 5.5 1.65 V to 1.95 V VCCI × 0.65 2.3 V to 2.7 V 1.7 High-level VIH Data inputs(4) V input voltage 3 V to 3.6 V 2 4.5 V to 5.5 V VCCI × 0.7 1.65 V to 1.95 V VCCI × 0.35 2.3 V to 2.7 V 0.7 Low-level VIL Data inputs(4) V input voltage 3 V to 3.6 V 0.8 4.5 V to 5.5 V VCCI × 0.3 1.65 V to 1.95 V VCCA × 0.65 2.3 V to 2.7 V 1.7 High-level Control inputs VIH V input voltage (referenced to VCCA)(5) 3 V to 3.6 V 2 4.5 V to 5.5 V VCCA × 0.7 1.65 V to 1.95 V VCCA × 0.35 2.3 V to 2.7 V 0.7 Low-level Control inputs VIL V input voltage (referenced to VCCA)(5) 3 V to 3.6 V 0.8 4.5 V to 5.5 V VCCA × 0.3 VI Input voltage Control inputs 0 5.5 V Active state 0 VCCO Input/output VI/O V voltage 3-State 0 5.5 1.65 V to 1.95 V –4 2.3 V to 2.7 V –8 IOH High-level output current mA 3 V to 3.6 V –24 4.5 V to 5.5 V –32 1.65 V to 1.95 V 4 2.3 V to 2.7 V 8 IOL Low-level output current mA 3 V to 3.6 V 24 4.5 V to 5.5 V 32 1.65 V to 1.95 V 20 2.3 V to 2.7 V 20 Input transition ∆t/∆v Data inputs ns/V rise or fall rate 3 V to 3.6 V 10 4.5 V to 5.5 V 5 TA Operating free-air temperature –40 85 °C (1) VCCI is the VCC associated with the data input port. (2) VCCO is the VCC associated with the output port. (3) All unused control inputs of the device must be held at VCCA or GND to ensure proper device operation and minimize power consumption. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. (4) For VCCI values not specified in the data sheet, VIH min = VCCI × 0.7 V, VIL max = VCCI × 0.3 V. (5) For VCCA values not specified in the data sheet, VIH min = VCCA × 0.7 V, VIL max = VCCA × 0.3 V. 4 Submit Documentation Feedback |
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