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SN74GTL16616 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74GTL16616 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 14 page www.ti.com Absolute Maximum Ratings (1) Recommended Operating Conditions (1) (2) (3) (4) SN74GTL16616 17-BIT LVTTL-TO-GTL/GTL+ UNIVERSAL BUS TRANSCEIVER WITH BUFFERED CLOCK OUTPUTS SCBS481H – JUNE 1994 – REVISED APRIL 2005 over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT 3.3 V –0.5 4.6 VCC Supply voltage range V 5 V –0.5 7 A-port and control inputs –0.5 7 VI Input voltage range(2) V B port and VREF –0.5 4.6 A port –0.5 7 VO Voltage range applied to any output in the high or power-off state(2) V B port –0.5 4.6 A port 128 IO Current into any output in the low state mA B port 80 IO Current into any A-port output in the high state(3) 64 mA Continuous current through each VCC or GND ±100 mA IIK Input clamp current VI < 0 –50 mA IOK Output clamp current VO < 0 –50 mA DGG package 64 θ JA Package thermal impedance(4) °C/W DL package 56 Tstg Storage temperature range –65 150 °C (1) 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. (2) The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. (3) This current flows only when the output is in the high state and VO > VCC. (4) The package thermal impedance is calculated in accordance with JESD 51-7. MIN NOM MAX UNIT 3.3 V 3.15 3.3 3.45 VCC Supply voltage V 5 V 4.75 5 5.25 GTL 1.14 1.2 1.26 VTT Termination voltage V GTL+ 1.35 1.5 1.65 GTL 0.74 0.8 0.87 VREF Reference voltage V GTL+ 0.87 1 1.1 B port VTT VI Input voltage V Except B port 5.5 B port VREF + 50 mV VIH High-level input voltage V Except B port 2 B port VREF – 50 mV VIL Low-level input voltage V Except B port 0.8 IIK Input clamp current –18 mA IOH High-level output current A port –32 mA A port 64 IOL Low-level output current mA B port 40 TA Operating free-air temperature –40 85 °C (1) All unused 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. (2) Normal connection sequence is GND first, VCC = 5 V second, and VCC = 3.3 V, I/O, control inputs, VTT and VREF (any order) last. (3) VTT and RTT can be adjusted to accommodate backplane impedances if the dc recommended IOL ratings are not exceeded. (4) VREF can be adjusted to optimize noise margins, but normally is two-thirds VTT. 4 |
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