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CD74HC40105MT Datasheet(PDF) 11 Page - Texas Instruments |
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CD74HC40105MT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 22 page 11 FIGURE 7. HC SETUP TIMES, HOLD TIMES, REMOVAL TIME, AND PROPAGATION DELAY TIMES FOR EDGE TRIGGERED SEQUENTIAL LOGIC CIRCUITS FIGURE 8. HCT SETUP TIMES, HOLD TIMES, REMOVAL TIME, AND PROPAGATION DELAY TIMES FOR EDGE TRIGGERED SEQUENTIAL LOGIC CIRCUITS FIGURE 9. HC THREE-STATE PROPAGATION DELAY WAVEFORM FIGURE 10. HCT THREE-STATE PROPAGATION DELAY WAVEFORM NOTE: Open drain waveforms tPLZ and tPZL are the same as those for three-state shown on the left. The test circuit is Output RL =1kΩ to VCC, CL = 50pF. FIGURE 11. HC AND HCT THREE-STATE PROPAGATION DELAY TEST CIRCUIT Test Circuits and Waveforms (Continued) trCL tfCL GND VCC GND VCC 50% 90% 10% GND CLOCK INPUT DATA INPUT OUTPUT SET, RESET OR PRESET VCC 50% 50% 90% 10% 50% 90% tREM tPLH tSU(H) tTLH tTHL tH(L) tPHL IC CL 50pF tSU(L) tH(H) trCL tfCL GND 3V GND 3V 1.3V 2.7V 0.3V GND CLOCK INPUT DATA INPUT OUTPUT SET, RESET OR PRESET 3V 1.3V 1.3V 1.3V 90% 10% 1.3V 90% tREM tPLH tSU(H) tTLH tTHL tH(L) tPHL IC CL 50pF tSU(L) 1.3V tH(H) 1.3V 50% 10% 90% GND VCC 10% 90% 50% 50% OUTPUT DISABLE OUTPUT LOW TO OFF OUTPUT HIGH TO OFF OUTPUTS ENABLED OUTPUTS DISABLED OUTPUTS ENABLED 6ns 6ns tPZH tPHZ tPZL tPLZ 0.3 2.7 GND 3V 10% 90% 1.3V 1.3V OUTPUT DISABLE OUTPUT LOW TO OFF OUTPUT HIGH TO OFF OUTPUTS ENABLED OUTPUTS DISABLED OUTPUTS ENABLED tr 6ns tPZH tPHZ tPZL tPLZ 6ns tf 1.3 IC WITH THREE- STATE OUTPUT OTHER INPUTS TIED HIGH OR LOW OUTPUT DISABLE VCC FOR tPLZ AND tPZL GND FOR tPHZ AND tPZH OUTPUT RL = 1kΩ CL 50pF CD54HC40105, CD74HC40105, CD54HCT40105, CD74HCT40105 |
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