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74HC237 Datasheet(PDF) 12 Page - NXP Semiconductors |
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74HC237 Datasheet(HTML) 12 Page - NXP Semiconductors |
12 / 19 page 9397 750 13807 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Product data sheet Rev. 03 — 12 November 2004 12 of 19 Philips Semiconductors 74HC237 3-to-8 line decoder, demultiplexer with address latches 12. Waveforms VM = 0.5 × VI. Fig 6. Waveforms showing the address input (An) and enable inputs (E2, LE) to output (Yn) propagation delays and the output transition times VM = 0.5 × VI. Fig 7. Waveforms showing the enable input (E1) to output (Yn) propagation delays and the output transition times The shaded areas indicate when the input is permitted to change for predictable output performance. VM = 0.5 × VI. Fig 8. Waveforms showing the data set-up, hold times for An input to LE input and the latch enable pulse width 001aab873 An, E2, LE input Yn output VM tPHL tTHL tTLH tPLH VM 001aab874 E1 input Yn output VM tPHL tTHL tTLH tPLH VM tsu th LE input VM VM 001aab875 th tsu tW An input transparant transparant latched latched |
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