Datasheet 74HC14, 74HCT14 (Nexperia) - 6

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Nexperia 74HC14; 74HCT14 Hex inverting Schmitt trigger 11.1. Waveforms and test circuit
VI nA input VM VM GND tPHL tPLH VOH 90 % nY output VM VM 10 % VOL tTHL tTLH mna722 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load.
Fig. 4. Input to output propagation delays Table 8. Measurement points Type Input Output VM VM VX VY
74HC14 0.5 × VCC 0.5 × VCC 0.1 × VCC 0.9 × VCC 74HCT14 1.3 V 1.3 V 0.1 × VCC 0.9 × VCC tW VI 90 % negative VM pulse VM 10 % GND tf tr tr tf VI 90 % positive pulse VM VM 10 % GND tW VCC VI VO G DUT RT CL 001aah768 Test data is given in Table 9. Definitions test circuit: RT = termination resistance should be equal to output impedance Zo of the pulse generator; CL = load capacitance including jig and probe capacitance.
Fig. 5. Test circuit for measuring switching times Table 9. Test data Type Input Load Test VI tr, tf CL
74HC14 VCC 6.0 ns 15 pF, 50 pF tPLH, tPHL 74HCT14 3.0 V 6.0 ns 15 pF, 50 pF tPLH, tPHL 74HC_HCT14 All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2024. Al rights reserved
Product data sheet Rev. 10 — 29 February 2024 6 / 16
Document Outline 1. General description 2. Features and benefits 3. Applications 4. Ordering information 5. Functional diagram 6. Pinning information 6.1. Pinning 6.2. Pin description 7. Functional description 8. Limiting values 9. Recommended operating conditions 10. Static characteristics 11. Dynamic characteristics 11.1. Waveforms and test circuit 12. Transfer characteristics 12.1. Transfer characteristics waveforms 13. Application information 14. Package outline 15. Abbreviations 16. Revision history 17. Legal information Contents