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74LV244DB датащи(PDF) 6 Page - NXP Semiconductors |
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74LV244DB датащи(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product specification 74LV244 Octal buffer/line driver (3-State) 1998 May 20 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 50 Propagation delay 2.0 17 24 31 tPHL/tPLH Pro agation delay 1An to 1Yn; 2A to 2Y Figures 1, 2 2.7 13 17 23 ns 2An to 2Yn 3.0 to 3.6 92 14 18 4.5 to 5.5 12 15 1.2 65 3-State output enable time 2.0 22 39 49 tPZH/tPZL 3-State out ut enable time 1OE to 1Yn; 2OE to 2Y Figures 2, 3 2.7 16 29 36 ns 2OE to 2Yn 3.0 to 3.6 122 23 29 4.5 to 5.5 19 24 1.2 60 3-State output disable time 2.0 22 34 43 tPHZ/tPLZ 3-State out ut disable time 1OE to 1Yn; 2OE to 2Y Figures 2, 3 2.7 17 24 32 ns 2OE to 2Yn 3.0 to 3.6 132 21 26 4.5 to 5.5 16 19 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 × 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. VX = VOL + 0.3 V at VCC ≥ 2.7 V and ≤ 3.6 V VX = VOL + 0.1 × VCC at VCC < 2.7 V and ≥ 4.5 V VY = VOH – 0.3 V at VCC ≥ 2.7V and ≤ 3.6 V VY = VOH – 0.1 × VCC at VCC < 2.7 V and ≥ 4.5 V SV00617 VM 1An, 2An INPUTS 1Yn, 2Yn OUTPUT VM tPLH tPHL GND VOL VI VOH Figure 1. Input (1An, 2An) to output (1Yn, 2Yn) propagation delays. SV00623 outputs disabled outputs enabled outputs enabled tPHZ tPZH tPZL tPLZ HIGH-to-OFF OFF-to-HIGH LOW-to-OFF OFF-to-LOW VM VM OE INPUT VX VOL VOH VY GND GND VCC VI VM Qn OUTPUT Qn OUTPUT Figure 2. 3-State enable and disable times. |
Аналогичный номер детали - 74LV244DB |
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Аналогичное описание - 74LV244DB |
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