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74LCX374MTCX-NL Arkusz danych(PDF) 6 Page - Fairchild Semiconductor |
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74LCX374MTCX-NL Arkusz danych(HTML) 6 Page - Fairchild Semiconductor |
6 / 14 page 6 www.fairchildsemi.com 74LCX374 Rev. 2.0.0 AC Loading and Waveforms (Generic for LCX Family) Figure 1. AC Test Circuit (CL includes probe and jig capacitance) Test Switch tPLH, tPHL Open tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V VCC x 2 at VCC = 2.5 ± 0.2V tPZH, tPHZ GND VCC DUT CL 500 Ω 500 Ω OPEN tPLH, tPHL tPZH, tPHZ tPZL, tPLZ GND VI TEST SIGNAL Waveform for Inverting and Non-Inverting Functions Propagation Delay. Pulse Width and trec Waveforms 3-STATE Output Low Enable and Disable Times for Logic 3-STATE Output High Enable and Disable Times for Logic Setup Time, Hold Time and Recovery Time for Logic trise and tfall VCC GND DATA IN DATA OUT tpxx tpxx Vmi Vmo VCC GND CONTROL IN CLOCK OUTPUT tPHL tPLH trec tW Vmi Vmi Vmo Vmo VCC VX VOL GND DATA OUT OUTPUT CONTROL tPZL tPLZ Vmi Vmo DATA OUT OUTPUT CONTROL tPZH tPHZ VCC GND Vmi VOH VY Vmo DATA IN CONTROL INPUT MR OR CLEAR tS tS tH trec VCC GND VCC GND Vmi Vmi Vmi ANY OUTPUT tr tf VOH VOL 10% 10% 90% 90% Figure 2. Waveforms (Input Characteristics; f =1MHz, tr = tf = 3ns) Symbol VCC 3.3V ± 0.3V 2.7V 2.5V ± 0.2V Vmi 1.5V 1.5V VCC / 2 Vmo 1.5V 1.5V VCC / 2 Vx VOL + 0.3V VOL + 0.3V VOL + 0.15V Vy VOH − 0.3V VOH − 0.3V VOH − 0.15V |
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