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SN74ABTE16245DL 데이터시트(PDF) 8 Page - Texas Instruments |
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SN74ABTE16245DL 데이터시트(HTML) 8 Page - Texas Instruments |
8 / 1 page SN54ABTE16245, SN74ABTE16245 16-BIT INCIDENT-WAVE SWITCHING BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS226J – JULY 1993 – REVISED DECEMBER 2001 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION From Output Under Test LOAD CIRCUIT FOR OUTPUTS S2 7 V Open 500 Ω SWITCHING TABLE LOADS tPLH/tPHL (A and B port) tPLZ/tPZL tPHZ/tPZH Up Up Up tPLH tPHL Output Output Control (low-level enabling) Output Waveform 1 S2 at 7 V (see Note B) Output Waveform 2 S2 at Open (see Note B) VOL VOH tPZL tPZH tPLZ tPHZ 3.5 V 3 V 0 V VOH VOL 0 V VOL + 0.3 V VOH – 0.3 V ≈0 V 3 V Input CL = 50 pF (see Note A) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES 500 Ω S1 94 Ω 3.65 V 2 nF Open 7 V Open RX† † RX = 13, 26, or 56Ω EXTENDED SWITCHING TABLE LOADS tPLH/tPHL/tsk (A port) tPLH/tPHL/tsk (B port) tt (A port) (see Note E) tt (B port) (see Note F) S1 Down Up Down Up S2 X Open X Open S1 S2 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. tt is measured between 1 V and 2 V of the output waveform. F. tt is measured between 10% and 90% of the output waveform.Figure 1 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 2. Load Circuit and Voltage Waveforms |
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