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54AC191D View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54AC191D Up/Down Counter with Preset and Ripple Clock National-Semiconductor
National ->Texas Instruments National-Semiconductor
54AC191D Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
AC Operating Requirements
Symbol
Parameter
54AC
VCC
TA = −55˚C
to +125˚C
Fig.
(V)
(Note 6)
CL = 50 pF
Units
No.
Guaranteed
Minimum
ts
Setup Time, HIGH or LOW
3.3
Pn to PL
5.0
th
Hold Time, HIGH or LOW
3.3
Pn to PL
5.0
ts
Setup Time, LOW
3.3
CE to CP
5.0
4.0
ns
3.0
1.5
ns
2.0
9.0
ns
6.0
th
Hold Time, LOW
CE to CP
3.3
0
ns
5.0
0.5
ts
Setup Time, HIGH or LOW
3.3
U/D to CP
5.0
10.5
ns
7.5
th
Hold Time, HIGH or LOW
3.3
U/D to CP
5.0
0
ns
1.0
tw
PL Pulse Width, LOW
3.3
5.0
ns
5.0
5.0
tw
CP Pulse Width, LOW
3.3
6.0
ns
5.0
6.0
trec
Recovery Time
PL to CP
3.3
1.5
ns
5.0
1.0
Note 6: Voltage Range 3.3 is 3.3V ±0.3V
Voltage Range 5.0 is 5.0V ±0.5V
Capacitance
Symbol
CIN
CPD
Parameter
Input Capacitance
Power Dissipation
Capacitance
Typ
4.5
75.0
Units
pF
pF
Conditions
VCC = OPEN
VCC = 5.0V
7
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