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SN74BCT646DWG4 Datasheet(PDF) 5 Page - Texas Instruments |
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SN74BCT646DWG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 18 page SN54BCT646, SN74BCT646 OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3STATE OUTPUTS SCBS037D − AUGUST 1989 − REVISED MAY 2004 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range: Control inputs (see Note 1) −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O ports (see Note 1) −0.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the disabled or power-off state, VO −0.5 V to 7 V . . . . . . . . . . . . . . . . . Voltage range applied to any output in the high state, VO −0.5 V to VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current into any output in the low state: SN54BCT646 96 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74BCT646 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): DW package 46 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 3): NT package 67 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 3. The package thermal impedance is calculated in accordance with JESD 51-3. recommended operating conditions (see Note 4) SN54BCT646 SN74BCT646 UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.8 0.8 V IIK Input clamp current −18 −18 mA IOH High-level output current −12 −15 mA IOL Low-level output current 48 64 mA TA Operating free-air temperature −55 125 0 70 °C NOTE 4: All unused control inputs of the device must be held at VCC 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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