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74HCT5555 数据表(PDF) 11 Page - NXP Semiconductors |
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74HCT5555 数据表(HTML) 11 Page - NXP Semiconductors |
11 / 23 page September 1993 11 Philips Semiconductors Product specification Programmable delay timer with oscillator 74HC/HCT5555 Notes 1. One stage selected. 2. It is possible to retrigger directly after the trigger pulse, however the pulse will only be extended, if the time period exceeds the clock input cycle time divided by 2. 3. One stage selected. The termination of the output pulse remains synchronized with respect to the falling edge of the RS clock input. 4. One stage selected. The termination of the output pulse is no longer synchronized with respect to the falling edge of the RS clock input. fmax maximum clock pulse frequency 2 10 12 5.9 18 21 − − − 1.8 8 10 − − − 1.3 6.6 8 − − − MHz MHz MHz 2.0 4.5 6.0 Fig.8; note 3 fmax maximum clock pulse frequency 6 30 35 24.8 75 89 − − − 4.8 24 28 − − − 4 20 24 − − − MHz MHz MHz 2.0 4.5 6.0 Fig.9; note 4 SYMBOL PARAMETER Tamb (°C) UNIT TEST CONDITION +25 −40 to +85 −40 to +125 VCC (V) WAVEFORMS MIN TYP MAX MIN MAX MIN MAX |
类似零件编号 - 74HCT5555 |
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类似说明 - 74HCT5555 |
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