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74ACT843 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # 74ACT843
Description  9-Bit Transparent Latch
PDF  10 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

74ACT843 Datasheet(HTML) 7 Page - National Semiconductor (TI)

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AC Electrical Characteristics
74ACT
74ACT
VCC
TA ea25 C
TA eb40 C
Symbol
Parameter
(V)
CL e 50 pF
to a85 C
Units
CL e 50 pF
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
50
25
55
95
20
100
ns
Dn to On
tPHL
Propagation Delay
50
25
55
95
20
100
ns
Dn to On
tPLH
Propagation Delay
50
25
55
90
20
100
ns
LE to On
tPHL
Propagation Delay
50
25
55
90
20
100
ns
LE to On
tPLH
Propagation Delay
50
25
65
140
20
160
ns
PRE to On
tPHL
Propagation Delay
50
25
75
155
20
175
ns
CLR to On
tPZH
Output Enable Time
50
25
55
95
20
105
ns
OE to On
tPZL
Output Enable Time
50
25
55
95
20
105
ns
OE to On
tPHZ
Output Disable Time
50
25
60
105
20
110
ns
OE to On
tPLZ
Output Disable Time
50
25
60
105
20
110
ns
OE to On
tPHL
Propagation Delay
50
25
60
105
20
110
ns
PRE to On
tPLH
Propagation Delay
50
25
55
95
20
105
ns
CLR to On
Voltage Range 50 is 50V g05V
AC Operating Requirements
Symbol
Parameter
VCC
(V)
74AC
74AC
Units
TA ea25 C
TA eb40 C
CL e 50 pF
to a85 C
CL e 50 pF
Typ
Guaranteed Minimum
ts
Setup Time HIGH or LOW
50
b
05
05
10
ns
Dn to LE
th
Hold Time HIGH or LOW
50
05
20
20
ns
Dn to LE
tw
LE Pulse Width HIGH
50
20
35
35
ns
tw
PRE Pulse Width LOW
50
50
85
100
ns
tw
CLR Pulse Width LOW
50
55
95
110
ns
trec
PRE Recovery Time
50
05
20
20
ns
trec
CLR Recovery Time
50
b
05
10
10
ns
Voltage Range 50 is 50V g05V
7



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