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SN74CBT3305CDR Fiches technique(PDF) 6 Page - Texas Instruments |
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SN74CBT3305CDR Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 16 page www.ti.com PARAMETER MEASUREMENT INFORMATION VOH VOL CL (see Note A) TEST CIRCUIT S1 7 V Open GND RL RL tPLH tPHL Output Waveform 1 S1 at 7 V (see Note B) Output Waveform 2 S1 at Open (see Note B) tPZL tPZH tPLZ tPHZ 3 V 0 V VOH VOL 0 V VOL + V∆ VOH − V∆ 0 V Output Control (VIN) 3 V 3.5 V VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (tpd(s)) VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES Output 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. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd(s). The tpd propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load capacitance, when driven by an ideal voltage source (zero output impedance). H. All parameters and waveforms are not applicable to all devices. 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 50 Ω VG1 VCC DUT 50 Ω VIN 50 Ω VG2 50 Ω VI TEST RL S1 V∆ CL 5 V ± 0.5 V 4 V VCC VI tPHZ/tPZH tPLZ/tPZL tpd(s) 5 V ± 0.5 V 4 V 5 V ± 0.5 V 4 V Open Open 7 V 7 V Open Open 500 Ω 500 Ω 500 Ω 500 Ω 500 Ω 500 Ω VCC or GND VCC or GND GND GND VCC VCC 50 pF 50 pF 50 pF 50 pF 50 pF 50 pF 0.3 V 0.3 V 0.3 V 0.3 V Output Control (VIN) Input Generator Input Generator VO SN74CBT3305C DUAL FET BUS SWITCH 5-V BUS SWITCH WITH –2-V UNDERSHOOT PROTECTION SCDS125B – SEPTEMBER 2003 – REVISED AUGUST 2005 Figure 3. Test Circuit and Voltage Waveforms 6 |
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