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SN74LVC4245ADW Datasheet(PDF) 7 Page - Texas Instruments |
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SN74LVC4245ADW Datasheet(HTML) 7 Page - Texas Instruments |
7 / 15 page www.ti.com PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT S1 7 V Open GND 500 Ω 500 Ω VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES NONINVERTING OUTPUTS tPLH tPHL VOH VOL Output Control Output Waveform 1 S1 at 7 V (see Note B) Output Waveform 2 S1 at GND (see Note B) VOL VOH tPZL tPZH tPLZ tPHZ 1.5 V 1.5 V 3.5 V 0 V VOL + 0.3 V VOH - 0.3 V ≈0 V 3 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING Output tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7 V GND TEST S1 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. All parameters and waveforms are not applicable to all devices. 3 V 0 V 1.5 V Input 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 3 V 0 V 1.5 V 1.5 V tw Input VOLTAGE WAVEFORMS PULSE DURATION SN74LVC4245A OCTAL BUS TRANSCEIVER AND 3.3-V TO 5-V SHIFTER WITH 3-STATE OUTPUTS SCAS375H – MARCH 1994 – REVISED MARCH 2005 B PORT Figure 2. Load Circuit and Voltage Waveforms 7 |
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