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74F525PCX Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # 74F525PCX
Description  Programmable Counter
PDF  10 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

74F525PCX Datasheet(HTML) 7 Page - National Semiconductor (TI)

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AC Electrical Characteristics
74F
74F
TA ea25 C
TA VCC e Com
Symbol
Parameter
VCC ea50V
CL e 50 pF
Units
CL e 50 pF
Min
Typ
Max
Min
Max
fmax
Maximum Clock Frequency
50
60
40
MHz
tPLH
Propagation Delay
90
160
205
80
225
ns
tPHL
CP to Q
80
120
155
70
175
tPLH
Propagation Delay
90
155
200
80
220
ns
tPHL
CP to Q2
100
155
200
90
220
tPLH
Propagation Delay
85
120
155
75
175
ns
tPHL
XTR to Q
60
105
135
50
150
tPLH
Propagation Delay
115
165
210
105
230
ns
tPHL
MR to Q
90
125
160
80
180
tPLH
Propagation Delay
80
140
175
70
195
ns
tPHL
MRto Q2
70
105
135
60
150
tPLH
Propagation Delay
100
150
190
90
210
ns
tPHL
Mn to Q
105
170
215
95
235
AC Operating Requirements
74F
74F
Symbol
Parameter
TA ea25 C
TA VCC e Com
Units
VCC ea50V
Min
Max
Min
Max
ts(H)
Setup Time HIGH or LOW
20
25
ns
ts(L)
Dn to WE
40
45
th(H)
Hold Time HIGH or LOW
0
0
ns
th(L)
Dn to WE
20
25
ts(H)
Setup Time HIGH or LOW
90
100
ns
ts(L)
Dn to CP
105
120
th(H)
Hold Time HIGH or LOW
0
0
ns
th(L)
Dn to CP
0
0
ts(H)
Setup Time HIGH or LOW
70
80
ns
ts(L)
XTR to CP
80
90
th(H)
Hold Time HIGH or LOW
00
ns
XTR to CP
ts(H)
Setup Time HIGH or LOW
335
355
ns
ts(L)
Mode to CP
335
355
tw(H)
XTR Pulse Width HIGH
115
130
ns
tw(L)
MR Pulse Width LOW
70
80
ns
tw(L)
WE Pulse Width LOW
45
50
ns
tw(H)
CP Pulse Width
35
40
ns
tw(L)
HIGH or LOW
95
105
trec
Recovery Time
50
60
ns
MR to CP
trec
Recovery Time
300
320
ns
Mode to CP
7



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