Sharp VL-DC1E Manuale delle Istruzioni Pagina 242

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Multisim Component Reference Guide 6-68 ni.com
6.4.12074xx393 (Dual 4-bit Binary Counter)
This device features an independent active-high clear and clock input for each counter. The
74393 is ideal for circuits that require two independent counters.
The 74393 counts from 0 to 15 in binary on every positive transition (low to high) of the clock
pulse.
Count sequence truth table:
COUNT
OUTPUT
QD QC QB QA
0 0000
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
8 1000
9 1001
10 1010
11 1011
12 1100
13 1101
14 1110
15 1111
ComponentRef.book Page 68 Thursday, December 7, 2006 10:12 AM
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