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Número de pieza | DM74LS393 | |
Descripción | Dual 4-Bit Binary Counter | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de DM74LS393 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
No Preview Available ! August 1986
Revised March 2000
DM74LS393
Dual 4-Bit Binary Counter
General Description
Each of these monolithic circuits contains eight master-
slave flip-flops and additional gating to implement two indi-
vidual four-bit counters in a single package. The
DM74LS393 comprises two independent four-bit binary
counters each having a clear and a clock input. N-bit binary
counters can be implemented with each package providing
the capability of divide-by-256. The DM74LS393 has paral-
lel outputs from each counter stage so that any submultiple
of the input count frequency is available for system-timing
signals.
Features
s Dual version of the popular DM74LS93
s DM74LS393 dual 4-bit binary counter with individual
clocks
s Direct clear for each 4-bit counter
s Dual 4-bit versions can significantly improve system
densities by reducing counter package count by 50%
s Typical maximum count frequency 35 MHz
s Buffered outputs reduce possibility of collector commu-
tation
Ordering Code:
Order Number Package Number
Package Description
DM74LS393M
M14A
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS373N
N14A
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
Counter Sequence (Each Counter)
Count
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
H = HIGH Logic Level
L = LOW Logic Level
QD
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
Outputs
QC QB
LL
LL
LH
LH
HL
HL
HH
HH
LL
LL
LH
LH
HL
HL
HH
HH
QA
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
© 2000 Fairchild Semiconductor Corporation DS006434
www.fairchildsemi.com
1 page Physical Dimensions inches (millimeters) unless otherwise noted
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Package Number M14A
5 www.fairchildsemi.com
5 Page |
Páginas | Total 6 Páginas | |
PDF Descargar | [ Datasheet DM74LS393.PDF ] |
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