![]() |
Electronic Components Datasheet Search |
|
CD74HC540 Datasheet(PDF) 7 Page - Texas Instruments |
|
|
CD74HC540 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 8 page ![]() 7 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 5. HC AND HCT THREE-STATE PROPAGATION DELAY TEST CIRCUIT Test Circuits and Waveforms (Continued) 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 |