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74HC2G14 데이터시트(PDF) 8 Page - NXP Semiconductors |
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74HC2G14 데이터시트(HTML) 8 Page - NXP Semiconductors |
8 / 19 page 74HC_HCT2G14_1 © NXP B.V. 2006. All rights reserved. Product data sheet Rev. 01 — 11 October 2006 8 of 19 NXP Semiconductors 74HC2G14; 74HCT2G14 Dual inverting Schmitt trigger 13. Waveforms Measurement points are given in Table 10. VOL and VOH are typical voltage output drop that occur with the output load. Fig 5. The data input (nA) to output (nY) propagation delays and output transition times mna722 tPLH tPHL VM VM 90% 10% VM VM nY output nA input VI GND VOH VOL tTLH tTHL Table 10. Measurement points Type Input Output VM VI tr = tf VM 74HC2G14 0.5VCC GND to VCC 6.0 ns 0.5VCC 74HCT2G14 1.3 V GND to 3.0 V 6.0 ns 1.3 V Test data is given in Table 11. Definitions test circuit: RL = Load resistance. CL = Load capacitance including jig and probe capacitance. RT = Termination resistance should be equal to output impedance Zo of the pulse generator. Fig 6. Load circuitry for switching times mgk563 D.U.T VCC VCC VI VO RT RL = 1 kΩ CL 50 pF open PULSE GENERATOR Table 11. Test data Type Input Test VI tr, tf tPHL, tPLH 74HC2G14 GND to VCC 6 ns open 74HCT2G14 GND to 3.0 V 6 ns open |
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