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SN54HC4020 Datasheet(PDF) 5 Page - Texas Instruments |
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SN54HC4020 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 18 page  SN54HC4020, SN74HC4020 14BIT ASYNCHRONOUS BINARY COUNTERS SCLS158E − DECEMBER 1982 − REVISED SEPTEMBER 2003 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PARAMETER MEASUREMENT INFORMATION VOLTAGE WAVEFORMS SETUP AND INPUT RISE AND FALL TIMES VOLTAGE WAVEFORMS PULSE DURATIONS tsu 50% 50% 50% 10% 10% 90% 90% VCC VCC 0 V 0 V tr tf Reference Input Data Input 50% High-Level Pulse 50% VCC 0 V 50% 50% VCC 0 V tw Low-Level Pulse 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 Test Point From Output Under Test LOAD CIRCUIT NOTES: A. CL includes probe and test-fixture capacitance. B. 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. C. For clock inputs, fmax is measured when the input duty cycle is 50%. D. The outputs are measured one at a time with one input transition per measurement. E. tPLH and tPHL are the same as tpd. CL = 50 pF (see Note A) Figure 1. Load Circuit and Voltage Waveforms |
Similar Part No. - SN54HC4020_07 |
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Similar Description - SN54HC4020_07 |
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