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74HC137N 데이터시트(PDF) 10 Page - NXP Semiconductors |
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74HC137N 데이터시트(HTML) 10 Page - NXP Semiconductors |
10 / 19 page 9397 750 13804 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Product data sheet Rev. 03 — 11 November 2004 10 of 19 Philips Semiconductors 74HC137 3-to-8 line decoder, demultiplexer with address latches; inverting Tamb = −40 °C to +85 °C tPHL, tPLH propagation delay An to Yn see Figure 6 VCC = 2.0 V - - 225 ns VCC = 4.5 V - - 45 ns VCC = 6.0 V - - 38 ns propagation delay LE to Yn see Figure 7 VCC = 2.0 V - - 240 ns VCC = 4.5 V - - 48 ns VCC = 6.0 V - - 41 ns propagation delay E1 to Yn see Figure 7 VCC = 2.0 V - - 180 ns VCC = 4.5 V - - 36 ns VCC = 6.0 V - - 31 ns propagation delay E2 to Yn see Figure 6 VCC = 2.0 V - - 180 ns VCC = 4.5 V - - 36 ns VCC = 6.0 V - - 31 ns tTHL, tTLH output transition time see Figure 6 VCC = 2.0 V - - 95 ns VCC = 4.5 V - - 19 ns VCC = 6.0 V - - 16 ns tW LE pulse width HIGH see Figure 8 VCC = 2.0 V 65 - - ns VCC = 4.5 V 13 - - ns VCC = 6.0 V 11 - - ns tsu set-up time An to LE see Figure 8 VCC = 2.0 V 65 - - ns VCC = 4.5 V 13 - - ns VCC = 6.0 V 11 - - ns th hold time An to LE see Figure 8 VCC = 2.0 V 40 - - ns VCC = 4.5 V 8 - - ns VCC = 6.0 V 7 - - ns Table 8: Dynamic characteristics …continued GND = 0 V; tr =tf = 6 ns; CL = 50 pF. Symbol Parameter Conditions Min Typ Max Unit |
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