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TS3L500 Scheda tecnica(PDF) 9 Page - Texas Instruments |
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TS3L500 Scheda tecnica(HTML) 9 Page - Texas Instruments |
9 / 15 page TS3L500 16BIT TO 8BIT SPDT GIGABIT LAN SWITCH WITH LED SWITCH SCDS212B − SEPTEMBER 2005 − REVISED APRIL 2006 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION Skew CL (see Note A) TEST CIRCUIT S1 2 × VCC Open GND RL RL VOH VOL VOLTAGE WAVEFORMS OUTPUT SKEW (tsk(o)) Data Out at YB1 or YB2 NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time, with one transition per measurement. 50 Ω VG1 VCC DUT 50 Ω VIN 50 Ω VG2 50 Ω VI TEST RL S1 CL 3.3 V ± 0.3 V VCC Vin tsk(p) tsk(o) 3.3 V ± 0.3 V Open Open 200 Ω 200 Ω VCC or GND VCC or GND 10 pF 10 pF Input Generator Input Generator VO (VOH + VOL)/2 VOH VOL Data Out at XB1 or XB2 (VOH + VOL)/2 3.5 V 1.5 V Data In at Ax or Ay 2.5 V tPLHx tPHLx tsk(o) tsk(o) tPLHy tPHLy tsk(o) = |tPLHy − tPLHx| or |tPHLy − tPHLx| VOH VOL VOLTAGE WAVEFORMS PULSE SKEW [tsk(p)] Output (VOH + VOL)/2 Input 2.5 V tPLH tPHL tsk(p) = |tPHL − tPLH| 3.5 V 1.5 V VO VI VO Figure 6. Test Circuit and Voltage Waveforms |
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