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SN74GTLP1395PWE4 Datasheet(PDF) 6 Page - Texas Instruments |
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SN74GTLP1395PWE4 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 24 page www.ti.com Recommended Operating Conditions(1)(2)(3)(4) SN74GTLP1395 TWO 1-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVERS WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND SELECTABLE POLARITY SCES349C–JUNE 2001–REVISED JANUARY 2006 MIN NOM MAX UNIT VCC Supply voltage 3.15 3.3 3.45 V BIAS VCC GTL 1.14 1.2 1.26 VTT Termination voltage V GTLP 1.35 1.5 1.65 GTL 0.74 0.8 0.87 VREF Reference voltage V GTLP 0.87 1 1.1 B port VTT VI Input voltage V Except B port VCC 5.5 B port VREF +0.05 V VIH High-level input voltage Except B port 2 V B port VREF –0.05 VIL Low-level input voltage V Except B port 0.8 IIK Input clamp current –18 mA IOH High-level output current Y outputs –24 mA Y outputs 24 IOL Low-level output current mA B port 100 Δt/Δv Input transition rise or fall rate Outputs enabled 10 ns/V Δt/ΔVCC Power-up ramp rate 20 μs/V 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) Proper connection sequence for use of the B-port I/O precharge feature is GND and BIAS VCC = 3.3 V first, I/O second, and VCC =3.3 V last, because the BIAS VCC precharge circuitry is disabled when any VCC pin is connected. The control and VREF inputs can be connected anytime, but normally are connected during the I/O stage. If B-port precharge is not required, any connection sequence is acceptable, but generally, GND is connected first. (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 it is two-thirds VTT. TI-OPC is enabled in the A-to-B direction and is activated when VTT > 0.7 V above VREF. If operated in the A-to-B direction, VREF should be set to within 0.6 V of VTT to minimize current drain. 6 |
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