TC74AC161F 데이터 시트보기 (PDF) - Toshiba
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TC74AC161F Datasheet PDF : 14 Pages
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TC74AC161,163P/F/FT
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Characteristics
Symbol
Test Condition
Propagation delay
time
(CK-Q)
Propagation delay
time
(CK-carry, count
mode)
Propagation delay
time
(CK-carry, preset
mode)
Propagation delay
time
(ENT-carry)
Propagation delay
time
( CLR -Q) (Note 1)
Propagation delay
time
( CLR -carry)
(Note 1)
Maximum clock
frequency
Input capacitance
Power dissipation
capacitance
tpLH
tpHL
tpLH
tpHL
tpLH
tpHL
tpLH
tpHL
tpHL
tpHL
fmax
CIN
CPD
Figure 1
Figure 1
Figure 2
Figure 6
Figure 4
Figure 4
―
―
VCC (V)
3.3 ± 0.3
5.0 ± 0.5
Ta = 25°C
Min Typ. Max
―
8.8 15.8
―
6.5 9.6
3.3 ± 0.3 ―
5.0 ± 0.5 ―
10.4 18.4
8.1 11.8
3.3 ± 0.3 ―
5.0 ± 0.5 ―
12.9 22.4
9.1 13.2
3.3 ± 0.3 ―
5.0 ± 0.5 ―
7.5 13.2
5.8 8.3
3.3 ± 0.3 ―
5.0 ± 0.5 ―
10.6 18.4
7.7 11.4
3.3 ± 0.3 ―
5.0 ± 0.5 ―
12.0 21.0
8.6 12.7
3.3 ± 0.3 50 110 ―
5.0 ± 0.5 90 140 ―
―
5
10
(Note 2 ―
85
―
Ta =
−40 to 85°C Unit
Min Max
1.0 18.0
ns
1.0 11.0
1.0 21.6
ns
1.0 13.5
1.0 25.5
ns
1.0 15.0
1.0 15.0
ns
1.0 9.5
1.0 21.0
ns
1.0 13.0
1.0 24.0
ns
1.0 14.5
50
―
MHz
90
―
―
10
pF
―
―
pF
Note 1: For TC74AC161 only
Note 2: 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:
ΔICC =
fCK
⋅
VCC
⎜⎜⎝⎛
C QA
2
+
CQB
4
+
CQC
8
+
CQD
16
+
CCO
16
⎟⎟⎠⎞
CQA to CQD and CCO are the capacitances at QA to QD and CARRY OUT, respectively.
fCK is the input frequency of the CK.
8
2012-02-29
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