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PDF 54F191 Data sheet ( Hoja de datos )
| Número de pieza | 54F191 | |
| Descripción | Up/Down Binary Counter | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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www.DataSheet4U.com
November 1994
54F 74F191
Up Down Binary Counter with Preset and Ripple Clock
General Description
The ’F191 is a reversible modulo-16 binary counter featur-
ing synchronous counting and asynchronous presetting
The preset feature allows the ’F191 to be used in program-
mable dividers The Count Enable input the Terminal Count
output and Ripple Clock output make possible a variety of
methods of implementing multistage counters In the count-
ing modes state changes are initiated by the rising edge of
the clock
Features
Y High-Speed 125 MHz typical count frequency
Y Synchronous counting
Y Asynchronous parallel load
Y Cascadable
Commercial
74F191PC
74F191SC (Note 1)
74F191SJ (Note 1)
Military
54F191DM (Note 2)
54F191FM (Note 2)
54F191LM (Note 2)
Package
Number
N16E
J16A
M16A
M16D
W16A
E20A
Package Description
16-Lead (0 300 Wide) Molded Dual-In-Line
16-Lead Ceramic Dual-In-Line
16-Lead (0 150 Wide) Molded Small Outline JEDEC
16-Lead (0 300 Wide) Molded Small Outline EIAJ
16-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use suffix e SCX and SJX
Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
Pin Assignment
for LCC
IEEE IEC
TL F 9495–1
TL F 9495 – 2
TL F 9495 – 3
TL F 9495–4
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9495
RRD-B30M75 Printed in U S A
1 page  
AC Electrical Characteristics
Symbol
Parameter
fmax
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Maximum Count Frequency
Propagation Delay
CP to Qn
Propagation Delay
CP to TC
Propagation Delay
CP to RC
Propagation Delay
CE to RC
Propagation Delay
U D to RC
Propagation Delay
U D to TC
Propagation Delay
Pn to Qn
Propagation Delay
PL to Qn
Propagation Delay
Pn to TC
Propagation Delay
Pn to RC
Propagation Delay
PL to TC
Propagation Delay
PL to RC
74F
TA e a25 C
VCC e a5 0V
CL e 50 pF
Min Typ Max
100 125
30 55 75
5 0 8 5 11 0
6 0 10 0 13 0
5 0 8 5 11 0
30 55 75
30 50 70
30 50 70
30 55 70
7 0 11 0 18 0
5 5 9 0 12 0
4 0 7 0 10 0
4 0 6 5 10 0
30 45 70
6 0 10 0 13 0
5 0 8 5 11 0
5 5 9 0 12 0
5 0 14 0
6 5 13 0
6 5 19 0
6 0 14 0
8 0 16 5
6 0 13 5
10 0 20 0
9 0 15 5
54F
TA VCC e Mil
CL e 50 pF
Min Max
75
30 95
5 0 13 5
6 0 16 5
5 0 13 5
30 95
30 90
30 90
30 90
7 0 22 0
5 5 14 0
4 0 13 5
4 0 12 5
30 90
6 0 16 0
5 0 13 0
5 5 14 5
74F
TA VCC e Com
CL e 50 pF
Min Max
90
30 85
5 0 12 0
6 0 14 0
5 0 12 0
30 85
30 80
30 80
30 80
7 0 20 0
5 5 13 0
4 0 11 0
4 0 11 0
30 80
6 0 14 0
5 0 12 0
5 5 13 0
5 0 15 0
6 0 14 0
6 5 20 0
6 0 15 0
8 0 17 5
6 0 14 5
10 0 21 0
9 0 16 0
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet 54F191.PDF ] | |
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