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54AC378LCQB Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # 54AC378LCQB
Description  Parallel D Register with Enable
PDF  8 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

54AC378LCQB Datasheet(HTML) 4 Page - National Semiconductor (TI)

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DC Characteristics for ’AC Family Devices (Continued)
74AC
54AC
74AC
Symbol
Parameter
VCC
TA e
TA e
TA e
Units
Conditions
(V)
a
25 C
b
55 Cto a125 C
b
40 Cto a85 C
Typ
Guaranteed Limits
IOLD
Minimum Dynamic
55
50
75
mA
VOLD e 165V Max
IOHD
Output Current
55
b
50
b
75
mA
VOHD e 385V Min
ICC
Maximum Quiescent
55
40
800
400
m
A
VIN e VCC
Supply Current
or GND
Maximum test duration 20 ms one output loaded at a time
Note
IIN and ICC
30V are guaranteed to be less than or equal to the respective limit
55V VCC
ICC for 54AC
25 C is identical to 74AC
25 C
AC Electrical Characteristics
74AC
54AC
74AC
VCC
TA ea25 C
TA eb55 CTA eb40 C
Symbol
Parameter
(V)
CL e 50 pF
to a125 Cto a85 C
Units
CL e 50 pF
CL e 50 pF
Min
Typ
Max
Min
Max
Min
Max
fmax
Maximum Clock
33
125
160
95
110
MHz
Frequency
50
160
200
95
145
tPLH
Propagation Delay
33
25
85
110
15
120
25
125
ns
CP to Qn
50
15
60
80
15
90
15
90
tPHL
Propagation Delay
33
25
80
105
15
120
25
110
ns
CP to Qn
50
15
55
75
15
90
15
80
Voltage Range 33 is 33V g03V
Voltage Range 50 is 50V g05V
AC Operating Requirements
74AC
54AC
74AC
VCC
TA ea25 C
TA eb55 CTA eb40 C
Symbol
Parameter
(V)
CL e 50 pF
to a125 Cto a85 C
Units
CL e 50 pF
CL e 50 pF
Typ
Guaranteed Minimum
ts
Setup Time HIGH or LOW
33
15
30
40
35
ns
Dn to CP
50
10
20
40
25
th
Hold Time HIGH or LOW
33
10
20
40
20
ns
Dn to CP
50
10
20
40
20
ts
Setup Time HIGH or
33
0
20
25
20
ns
LOW E to CP
50
0
20
25
20
th
Hold Time HIGH or
33
10
20
40
20
ns
LOW E to CP
50
10
20
40
20
tw
CP Pulse Width
33
30
45
65
55
ns
HIGH or LOW
50
20
35
65
40
Voltage Range 33 is 33V g03V
Voltage Range 50 is 50V g05V
Capacitance
Symbol
Parameter
Typ
Units
Conditions
CIN
Input Capacitance
45
pF
VCC e OPEN
CPD
Power Dissipation Capacitance
28
pF
VCC e 50V
4



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