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74LVCR162245DGGRE4 Scheda tecnica(PDF) 6 Page - Texas Instruments |
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74LVCR162245DGGRE4 Scheda tecnica(HTML) 6 Page - Texas Instruments |
6 / 12 page www.ti.com PARAMETER MEASUREMENT INFORMATION 1.5 V th tsu From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT FOR OUTPUTS S1 6 V Open GND 500 Ω 500 Ω Data Input Timing Input 1.5 V 2.7 V 0 V 1.5 V 1.5 V 2.7 V 0 V 2.7 V 0 V 1.5 V 1.5 V tw Input VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS VOLTAGE WAVEFORMS PULSE DURATION tPLH tPHL tPHL tPLH VOH VOH VOL VOL 1.5 V 1.5 V 2.7 V 0 V 1.5 V 1.5 V Input 1.5 V Output Control Output Waveform 1 S1 at 6 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 V 0 V 1.5 V VOL + 0.3 V 1.5 V VOH − 0.3 V ≈0 V 2.7 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING Output Output tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 6 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. 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. H. All parameters and waveforms are not applicable to all devices. SN74LVCR162245 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS SCES047E – AUGUST 1995 – REVISED MARCH 2005 Figure 1. Load Circuit and Voltage Waveforms 6 |
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