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74ACT11873 数据表(PDF) 5 Page - Texas Instruments |
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74ACT11873 数据表(HTML) 5 Page - Texas Instruments |
5 / 7 page 74ACT11873 DUAL 4BIT DTYPE LATCH WITH 3-STATE OUTPUTS SCAS096 − FEBRUARY 1990 − REVISED APRIL 1993 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT S1 2 X VCC Open GND 500 Ω 500 Ω TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VCC GND 1.5 V 1.5 V 1.5 V 3 V 3 V 0 V 0 V th tsu VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Data Input 3 V 0 3 V 0 1.5 V 1.5 V 1.5 V 1.5 V tw High-Level Input Low-Level Input tPLH tPHL tPHL tPLH VOH VOH VOL VOL 1.5 V 1.5 V 3 V 0 50% 50% Input (see Note B) Out-of-Phase Output In-Phase Output Output Control (Low-Level Enabling) Output Waveform 1 S1 at 2 x VCC (see Note C) Output Waveform 2 S1 at GND (see Note C) VOL VOH tPZL tPZH tPLZ tPHZ 1.5 V 1.5 V 0 50% 20% 50% 80% ENABLE AND DISABLE TIMES VOLTAGE WAVEFORMS 3 V Timing Input (see Note B) 50% 50% VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES ≈ VCC ≈ 0 V NOTES: A. CL includes probe and jig capacitance. B. 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. C. 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. D. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuit and Voltage Waveforms |
类似零件编号 - 74ACT11873 |
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类似说明 - 74ACT11873 |
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