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74LV257D Arkusz danych(PDF) 6 Page - NXP Semiconductors |
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74LV257D Arkusz danych(HTML) 6 Page - NXP Semiconductors |
6 / 12 page Philips Semiconductors Product specification 74LV257 Quad 2-input multiplexer (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 65 t /t Propagation delay nl0 to nY Figure 1 2.0 22 43 51 ns tPHL/tPLH nl0 to nY nl1 to nY Figure 1 2.7 16 31 38 ns 3.0 to 3.6 122 25 30 1.2 85 tPHL/tPLH Propagation delay Figure 1 2.0 29 56 66 ns tPHL/tPLH gy S to nY Figure 1 2.7 21 41 49 ns 3.0 to 3.6 162 33 39 1.2 60 tPZH/tPZL 3-State output enable time Figure 2 2.0 20 39 46 ns tPZH/tPZL OE to nY Figure 2 2.7 15 29 34 ns 3.0 to 3.6 112 23 27 1.2 65 t /t 3-State output disable time Figure 2 2.0 24 40 49 ns tPHZ/tPLZ OE to nY Figure 2 2.7 18 32 37 ns 3.0 to 3.6 142 26 30 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 = 0.5 × VCC at VCC < 2.7 V VM = 1.5 V at VCC ≥ 2.7 V VX = VOL + 0.3 V at VCC ≥ 2.7 V VX = VOL + 0.1 × VCC at VCC < 2.7 V VY = VOH – 0.3 V at VCC ≥ 2.7V VY = VOH – 0.1 × VCC at VCC < 2.7 V VOL and VOH are the typical output voltage drop that occur with the output load. SV00641 VM S, nI0, nI1 INPUTS nY OUTPUT VM tPLH tPHL GND VCC VOL VOH Figure 1. Input (S, nl0, nl1) to output (nY) propagation delays. SV00642 outputs disabled outputs enabled outputs enabled tPHZ tPZH tPZL tPLZ OUTPUT HIGH-to-OFF OFF-to-HIGH OUTPUT LOW-to-OFF OFF-to-LOW VM VM OE INPUT VX VOL VOH VY GND GND VCC VI VM Figure 2. 3-State enable and disable times. |
Podobny numer części - 74LV257D |
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Podobny opis - 74LV257D |
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