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74LVC14APWDH Scheda tecnica(PDF) 6 Page - NXP Semiconductors |
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74LVC14APWDH Scheda tecnica(HTML) 6 Page - NXP Semiconductors |
6 / 10 page Philips Semiconductors Product specification 74LVC14A Hex inverting Schmitt-trigger with 5V tolerant input 1998 Apr 28 6 AC CHARACTERISTICS GND = 0 V; tr = tf v 2.5 ns; CL = 50 pF; RL = 500W; Tamb = –40_C to +85_C LIMITS SYMBOL PARAMETER WAVEFORM VCC = 3.3V ±0.3V VCC = 2.7V VCC = 1.2V UNIT MIN TYP1 MAX MIN TYP MAX TYP tPHL/ tPLH Propagation delay nA to nY Figure 1, 2 1.5 4.5 6.4 1.5 5.0 7.5 18 ns NOTE: 1. These typical values are at VCC = 3.3V and Tamb = 25°C. AC WAVEFORMS VM = 1.5 V at VCC w 2.7 V VM = 0.5 S VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. VM nA INPUT nY OUTPUT VM tPLH tPHL GND VI VOL VOH SV00395 Figure 1. Input (nA) to output (nY) propagation delays. TEST CIRCUIT PULSE GENERATOR VI RT D.U.T. VO CL 50pF S1 2 x VCC Open GND 500 Ω 500 Ω VCC VI t 2.7V VCC 2.7V – 3.6V 2.7V Test S1 GND tPLZ/tPZL 2 x VCC tPHZ/tPZH tPLH/tPHL Open SY00003 VCC Figure 2. Load circuitry for switching times. APPLICATION INFORMATION All values given are typical unless otherwise specified. Note to Figure 7: f + 1 T [ 1 0.8 RC 0.5 1.0 1.5 2.0 average ICC (mA) V CC(V) 1.8 2.1 2.4 1.5 3.3 3.0 2.7 3.6 negative-going edge positive-going edge SV00445 Figure 3. Average ICC for LVC Schmitt-trigger devices; linear change of Vi between 0.8 V to 2.0 V. SV00433 R C Figure 4. Relaxation oscillator using the LVC14. |
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