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SN74HC125DT датащи(PDF) 9 Page - Texas Instruments |
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SN74HC125DT датащи(HTML) 9 Page - Texas Instruments |
9 / 28 page VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES 50% 50% 10% 10% 90% 90% VCC 0 V tr tf Input VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES 50% 50% 50% 10% 10% 90% 90% VCC VOH VOL 0 V tr tf Input In-Phase Output 50% tPLH tPHL 50% 50% 10% 10% 90% 90% VOH VOL tr tf tPHL tPLH Out-of-Phase Output 50% 10% 90% VCC ≈VCC VOL 0 V Output Control (Low-Level Enabling) Output Waveform 1 (See Note B) 50% tPZL tPLZ VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS VOH ≈0 V 50% 50% tPZH tPHZ Output Waveform 2 (See Note B) ≈VCC Test Point From Output Under Test CL (see Note A) RL VCC S1 S2 LOAD CIRCUIT PARAMETER CL tPZH tpd or tt tdis ten tPZL tPHZ tPLZ 1 kΩ 1 kΩ 50 pF or 150 pF 50 pF Open Closed RL S1 Closed Open S2 Open Closed Closed Open 50 pF or 150 pF Open Open −− NOTES: A. CL includes probe and test-fixture 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. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. D. The outputs are measured one at a time with one input transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. t PZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. SN54HC125 SN74HC125 www.ti.com SCLS104E – AUGUST 1984 – REVISED DECEMBER 2015 7 Parameter Measurement Information Figure 2. Load Circuit and Voltage Waveforms Copyright © 1984–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SN54HC125 SN74HC125 |
Аналогичный номер детали - SN74HC125DT |
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Аналогичное описание - SN74HC125DT |
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