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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
DC Characteristics for ’AC Family Devices (Continued)
Note 2: All outputs loaded; thresholds on input associated with output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: IIN and ICC @ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V VCC.
ICC for 54AC @ 25˚C is identical to 74AC @ 25˚C.
AC Electrical Characteristics
Symbol
Parameter
fmax
Maximum Count
Frequency
tPLH
Propagation Delay
CP to Qn
tPHL
Propagation Delay
CP to Qn
tPLH
Propagation Delay
CP to TC
tPHL
Propagation Delay
CP to TC
tPLH
Propagation Delay
CP to RC
tPHL
Propagation Delay
CP to RC
tPLH
Propagation Delay
CE to RC
tPHL
Propagation Delay
CE to RC
tPLH
Propagation Delay
U/D to RC
tPHL
Propagation Delay
U/D to RC
tPLH
Propagation Delay
U/D to TC
tPHL
Propagation Delay
U/D to TC
tPLH
Propagation Delay
Pn to Qn
tPHL
Propagation Delay
Pn to Qn
tPLH
Propagation Delay
PL to Qn
tPHL
Propagation Delay
PL to Qn
Note 5: Voltage Range 3.3 is 3.3V ±0.3V
Voltage Range 5.0 is 5.0V ±0.5V
VCC
(V)
(Note 5)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
54AC
TA = −55˚C
to +125˚C
CL = 50 pF
Min
Max
55
80
1.0
16.5
1.0
12.0
1.0
16.0
1.0
12.0
1.0
19.5
1.0
14.0
1.0
19.0
1.0
14.5
1.0
14.0
1.0
10.5
1.0
12.5
1.0
9.5
1.0
14.0
1.0
10.0
1.0
12.5
1.0
9.5
1.0
14.5
1.0
11.0
1.0
15.0
1.0
11.0
1.0
14.0
1.0
10.5
1.0
13.5
1.0
10.0
1.0
16.5
1.0
11.5
1.0
15.5
1.0
10.5
1.0
18.0
1.0
12.5
1.0
15.5
1.0
11.5
Fig.
Units
No.
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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