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74F161ASC Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # 74F161ASC
Description  Synchronous Presettable Binary Counter
PDF  10 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

74F161ASC Datasheet(HTML) 6 Page - National Semiconductor (TI)

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AC Electrical Characteristics
74F
54F
74F
TA ea25 C
TA VCC e Mil
TA VCC e Com
Symbol
Parameter
VCC ea50V
CL e 50 pF
CL e 50 pF
Units
CL e 50 pF
Min
Typ
Max
Min
Max
Min
Max
fmax
Maximum Count Frequency
100
120
75
90
MHz
tPLH
Propagation Delay
35
55
75
35
90
35
85
tPHL
CP to Qn (PE Input HIGH)
35
75
100
35
115
35
110
ns
tPLH
Propagation Delay
40
60
85
40
100
40
95
tPHL
CP to Qn (PE Input LOW)
40
60
85
40
100
40
95
tPLH
Propagation Delay
50
100
140
50
165
50
150
ns
tPHL
CP to TC
50
100
140
50
155
50
150
tPLH
Propagation Delay
25
45
75
25
90
25
85
ns
tPHL
CET to TC
25
45
75
25
90
25
85
tPHL
Propagation Delay
55
90
120
55
140
55
130
ns
MR to Qn (’F161A)
tPHL
Propagation Delay
45
80
105
45
125
45
115
ns
MR to TC (’F161A)
AC Operating Requirements
74F
54F
74F
Symbol
Parameter
TA ea25 C
TA VCC e Mil
TA VCC e Com
Units
VCC ea50V
Min
Max
Min
Max
Min
Max
ts(H)
Setup Time HIGH or LOW
50
55
50
ts(L)
Pn to CP
50
55
50
ns
th(H)
Hold Time HIGH or LOW
20
25
20
th(L)
Pn to CP
20
25
20
ts(H)
Setup Time HIGH or LOW
110
135
115
ts(L)
PE or SR to CP
85
105
95
ns
th(H)
Hold Time HIGH or LOW
20
36
20
th(L)
PE or SR to CP
0
0
0
ts(H)
Setup Time HIGH or LOW
110
130
115
ts(L)
CEP or CET to CP
50
60
50
ns
th(H)
Hold Time HIGH or LOW
0
0
0
th(L)
CEP or CET to CP
0
0
0
tw(H)
Clock Pulse Width (Load)
50
50
50
ns
tw(L)
HIGH or LOW
50
50
50
tw(H)
Clock Pulse Width (Count)
40
50
40
ns
tw(L)
HIGH or LOW
60
80
70
tw(L)
MR Pulse Width LOW
50
50
50
ns
(’F161A)
trec
Recovery Time
60
60
60
ns
MR to CP (’F161A)
6



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