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TC74VHC161F Scheda tecnica(PDF) 8 Page - Toshiba Semiconductor

Il numero della parte TC74VHC161F
Spiegazioni elettronici  Binary, Asynchronous Clear
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Produttore elettronici  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TC74VHC161F Scheda tecnica(HTML) 8 Page - Toshiba Semiconductor

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TC74VHC161,163F/FT/FK
2012-02-29
8
AC Characteristics (input: tr = tf = 3 ns)
Test Condition
Ta = 25°C
Ta =
−40 to 85°C
Characteristics
Symbol
VCC (V)
CL (pF)
Min
Typ.
Max
Min
Max
Unit
15
―
8.3
12.8
1.0
15.0
3.3 ± 0.3
50
―
10.8
16.3
1.0
18.5
15
―
4.9
8.1
1.0
9.5
Propagation delay
time
(CK-Q)
tpLH
tpHL
Figure 1,
Figure 2
5.0 ± 0.5
50
―
6.4
10.1
1.0
11.5
ns
15
―
8.7
13.6
1.0
16.0
3.3 ± 0.3
50
―
11.2
17.1
1.0
19.5
15
―
4.9
8.1
1.0
9.5
Propagation delay
time
(CK-CARRY,
count-mode)
tpLH
tpHL
Figure 1
5.0 ± 0.5
50
―
6.4
10.1
1.0
11.5
ns
15
―
11.0
17.2
1.0
20.0
3.3 ± 0.3
50
―
13.5
20.7
1.0
23.5
15
―
6.2
10.3
1.0
12.0
Propagation delay
time
(CK-CARRY,
preset-mode)
tpLH
tpHL
Figure 2
5.0 ± 0.5
50
―
7.7
12.3
1.0
14.0
ns
15
―
7.5
12.3
1.0
14.5
3.3 ± 0.3
50
―
10.5
15.8
1.0
18.0
15
―
4.9
8.1
1.0
9.5
Propagation delay
time
(ENT-CARRY)
tpLH
tpHL
Figure 6
5.0 ± 0.5
50
―
6.4
10.1
1.0
11.5
ns
15
―
8.9
13.6
1.0
16.0
3.3 ± 0.3
50
―
11.2
17.1
1.0
19.5
15
―
5.5
9.0
1.0
10.5
Propagation delay
time
( CLR -Q)
(Note 2)
tpHL
Figure 4
5.0 ± 0.5
50
―
7.0
11.0
1.0
12.5
ns
15
―
8.4
13.2
1.0
15.5
3.3 ± 0.3
50
―
10.9
16.7
1.0
19.0
15
―
5.0
8.6
1.0
10.0
Propagation delay
time
( CLR -CARRY)
(Note 2)
tpHL
Figure 4
5.0 ± 0.5
50
―
6.5
10.6
1.0
12.0
ns
15
80
130
―
70
―
3.3 ± 0.3
50
55
85
―
50
―
15
135
185
―
115
―
Maximum clock
frequency
fmax
―
5.0 ± 0.5
50
95
125
―
85
―
MHz
Input capacitance
CIN
―
―
4
10
―
10
pF
Power dissipation
capacitance
CPD
(Note 1)
―
23
―
―
―
pF
Note 1: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC
When the outputs drive a capacitive load, total current consumption is the sum of CPD, and ΔICC which is
obtained from the following formula:
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
+
+
+
⋅
16
C
16
C
8
C
4
C
2
C
V
f
=
ΔI
CO
QD
QC
QB
QA
CC
CK
CC
CQA to CQD and CCO are the capacitances at QA to QD and CARRY OUT, respectively.
fCK is the input frequency of the CK.
Note 2: For TC74VHC161 only


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