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PDF MM74C93 Data sheet ( Hoja de datos )
| Número de pieza | MM74C93 | |
| Descripción | 4-Bit Decade Counter 4-Bit Binary Counter | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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October 1987
Revised January 2004
MM74C93
4-Bit Binary CounterGeneral Description
mThe MM74C93 binary counter and complementary MOS
(CMOS) integrated circuits constructed with N- and P-
ochannel enhancement mode transistors. The 4-bit binary
counter can be reset to zero by applying high logic level on
. cinputs R01 and R02, and a separate flip-flop on the A-bit
enables the user to operate it as a divide-by-2, -8, or -16
divider. Counting occurs on the negative going edge of the
input pulse.
All inputs are protected against static discharge damage.
Features
s Wide supply voltage range: 3V to 15V
s Guaranteed noise margin: 1V
s High noise immunity: 0.45 VCC (typ.)
s Low power compatibility:
Fan out of 2 TTL driving 74L
s The MM74C93 follows the MM74L93 Pinout
t4UOrdering Code:
Order Number
eMM74C93N
Package Number
Package Description
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
eConnection Diagram
.DataShTopView
wwwLogic Diagram
Truth Table
4-Bit Binary Counter Binary Count Sequence
Count
Output
QD QC QB QA
0 LLLL
1 LLLH
2 L LHL
3 L LHH
4 LHLL
5 LHLH
6 LHHL
7 LHHH
8 HLLL
9 HLLH
10 H L H L
11 H L H H
12 H H L L
13 H H L H
14 H H H L
15 H H H H
Output QA is connected to input B for binary count sequence.
H = HIGH Level
L = LOW Level
X = Irrelevant
© 2004 Fairchild Semiconductor Corporation DS005889
www.fairchildsemi.com
1 page  
AC Test Circuits
Clock rise and fall time tr = tf = 20 ns
Switching Time Waveforms
MM74C90 and MM74C93 are solid line waveforms. Dashed line waveforms are for MM74C90 only.
5 www.fairchildsemi.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet MM74C93.PDF ] | |
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