Datenblatt-Suchmaschine für elektronische Bauteile |
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74LV139DB Datenblatt(PDF) 6 Page - NXP Semiconductors |
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74LV139DB Datenblatt(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product specification 74LV139 Dual 2-to-4 line decoder/demultiplexer 1998 Apr 28 6 AC CHARACTERISTICS GND = 0V; tr = tf ≤ 2.5ns; CL = 50pF; RL = 1KΩ CONDITION LIMITS SYMBOL PARAMETER WAVEFORM CONDITION –40 to +85 °C –40 to +125 °C UNIT VCC(V) MIN TYP1 MAX MIN MAX 1.2 70 Pti d l 2.0 24 31 39 tPHL/tPLH Propagation delay nAn to Yn Figures 1, 2 2.7 18 23 29 ns nAn to Yn 3.0 to 3.6 132 18 23 4.5 to 5.5 15 19 1.2 60 Pti d l 2.0 20 27 34 tPHL/tPLH Propagation delay nE to Yn Figures 1, 2 2.7 15 20 25 ns nE to Yn 3.0 to 3.6 112 16 20 4.5 to 5.5 13 16 NOTES: 1. Unless otherwise stated, all typical values are measured at Tamb = 25°C 2. Typical values are measured at VCC = 3.3 V. AC WAVEFORMS VM = 1.5 V at VCC ≥ 2.7 V and ≤ 3.6 V; VM = 0.5 V × VCC at VCC < 2.7 V and ≥ 4.5 V. VOL and VOH are the typical output voltage drop that occur with the output load. SV00535 VM nAn INPUT nYn OUTPUT VM tPLH tPHL GND Vl VOL VOH Figure 1. Address input (nAn) to output (nYn) propagation delays. SV00536 VM nE INPUT nYn OUTPUT VM tPLH tPHL GND Vl VOL VOH Figure 2. Enable input (nE) to output (nYn) propagation delays. TEST CIRCUIT PULSE GENERATOR RT Vl D.U.T. VO CL RL= 1k Vcc Test Circuit for Outputs DEFINITIONS VCC VI < 2.7V 2.7–3.6V VCC 2.7V TEST tPLH/tPHL ≥ 4.5 V VCC RL = Load resistor CL = Load capacitance includes jig and probe capacitiance 50pF RT = Termination resistance should be equal to ZOUT of pulse generators. SV00902 Figure 3. Load circuitry for switching times. |
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