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SN74GTLPH16912GR 数据表(PDF) 11 Page - Texas Instruments |
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SN74GTLPH16912GR 数据表(HTML) 11 Page - Texas Instruments |
11 / 18 page www.ti.com Distributed-Load Backplane Switching Characteristics Drvr 1.5 V 0.25” 2” 1” 1” 1.5 V 1” 1” 2” 0.25” Rcvr Rcvr Rcvr Slot 1 Slot 2 Slot 9 Slot 10 Conn. Conn. Conn. Conn. ZO = 70 Ω From Output Under Test Test Point 1.5 V CL = 9 pF 19 Ω LL = 19 nH SN74GTLPH16912 18-BIT LVTTL-TO-GTLP UNIVERSAL BUS TRANSCEIVER SCES288C – OCTOBER 1999 – REVISED JUNE 2005 The preceding switching characteristics table shows the switching characteristics of the device into a lumped load (Figure 1). However, the designer's backplane application probably is a distributed load. The physical representation is shown in Figure 2. This backplane, or distributed load, can be approximated closely to a resistor inductance capacitance (RLC) circuit, as shown in Figure 3. This device has been designed for optimum performance in this RLC circuit. The following switching characteristics table shows the switching characteristics of the device into the RLC load, to help the designer better understand the performance of the GTLP device in this typical backplane. See www.ti.com/sc/gtlp for more information. Figure 2. Medium-Drive Test Backplane Figure 3. Medium-Drive RLC Network 11 |
类似零件编号 - SN74GTLPH16912GR |
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类似说明 - SN74GTLPH16912GR |
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