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SN74FB1653 Folha de dados(PDF) 9 Page - Texas Instruments |
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SN74FB1653 Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 12 page SN74FB1653 17BIT LVTTL/BTL UNIVERSAL STORAGE TRANSCEIVER WITH BUFFERED CLOCK LINE SCBS702H − AUGUST 1997 − REVISED MARCH 2004 9 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION tPHZ From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT FOR A OUTPUTS S1 6 V Open 500 Ω 500 Ω TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 6 V GND tPHL tPLH Output Output Control (see Note B) Output Waveform 1 S1 at 6 V (see Note B) Output Waveform 2 S1 at GND (see Note B) VOL VOH tPLZ tPZH tPZL 3 V 3 V 0 V VOH VOL 0 V VOL + 0.3 V VOH − 0.3 V ≈0 V 3 V Data Input Timing Input 3 V 0 V 3 V 0 V 3 V 0 V tw Input Output tPHL tPLH 2 V 1 V VOH VOL Input From Output Under Test LOAD CIRCUIT FOR B OUTPUTS 2.1 V 16.5 Ω Input CL = 30 pF (see Note A) Test Point VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (B to A) VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (A to B) VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES (A port) GND 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: TTL inputs: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns; BTL inputs: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 1 ns, tf ≤ 1 ns. D. The outputs are measured one at a time, with one transition per measurement. 1.5 V 1.5 V 1.5 V 1.5 V 1.55 V 1.55 V 1.55 V 1.55 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 1.5 V th tsu Figure 1. Load Circuits and Voltage Waveforms |
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