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74AHCT157D Datasheet(PDF) 4 Page - NXP Semiconductors |
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74AHCT157D Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 16 page 74AHC_AHCT157_2 © NXP B.V. 2007. All rights reserved. Product data sheet Rev. 02 — 9 November 2007 4 of 16 NXP Semiconductors 74AHC157; 74AHCT157 Quad 2-input multiplexer 5.2 Pin description 6. Functional description [1] H = HIGH voltage level; L = LOW voltage level; X = don’t care. Table 2. Pin description Symbol Pin Description S 1 common data select input 1I0 to 4I0 2, 5, 11, 14 data inputs from source 0 1I1 to 4I1 3, 6, 10, 13 data inputs from source 1 1Y to 4Y 4, 7, 9, 12 multiplexer outputs GND 8 ground (0 V) E 15 enable input (active LOW) VCC 16 supply voltage Table 3. Function table[1] Input Output E S nI0 nI1 nY H XXXL LLLX L LLH X H LH X L L LH X H H |
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