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SNJ54ACT373FK Datasheet(PDF) 5 Page - Texas Instruments |
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SNJ54ACT373FK Datasheet(HTML) 5 Page - Texas Instruments |
5 / 22 page SN54ACT373, SN74ACT373 OCTAL D-TYPE TRANSPARENT LATCHES WITH 3-STATE OUTPUTS SCAS544E – OCTOBER 1995 – REVISED OCTOBER 2002 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION 50% VCC 3 V 3 V 0 V 0 V th tsu VOLTAGE WAVEFORMS Data Input tPLH tPHL VOH VOL 3 V 0 V Input Output Timing Input 50% VCC From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT S1 2 × VCC 500 Ω 500 Ω Output Control (low-level enabling) Output Waveform 1 S1 at 2 × VCC (see Note B) Output Waveform 2 S1 at Open (see Note B) VOL VOH tPZL tPZH tPLZ tPHZ ≈VCC 0 V 50% VCC VOL + 0.3 V 50% VCC ≈0 V Open VOLTAGE WAVEFORMS tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC Open TEST S1 3 V 0 V tw VOLTAGE WAVEFORMS Input VOH – 0.3 V 3 V 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 ≤ 1 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time with one input transition per measurement. VOLTAGE WAVEFORMS 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V Figure 1. Load Circuit and Voltage Waveforms |
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