TC74ACT161F 查看數據表（PDF） - Toshiba
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TC74ACT161F Datasheet PDF : 12 Pages
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TC74ACT161,163P/F
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Characteristics
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
(Note 2)
( CLR -Q)
Propagation delay
time
(Note 2)
( CLR -CARRY)
Maximum clock
frequency
Input capacitance
Power dissipation
capacitance
Symbol
tpLH
tpHL
Test Condition
VCC (V)
Ta = 25°C
Min Typ. Max
Figure 1
5.0 ± 0.5 ⎯
7.2 10.5
tpLH
tpHL
Figure 1
5.0 ± 0.5 ⎯
8.5 13.0
tpLH
tpHL
tpLH
tpHL
Figure 2
Figure 6
tpHL
Figure 4
5.0 ± 0.5 ⎯
9.7 15.0
5.0 ± 0.5 ⎯
6.6 10.0
5.0 ± 0.5 ⎯
6.3 10.0
tpHL
Figure 4
fmax
CIN
CPD
(Note 1)
⎯
⎯
⎯
5.0 ± 0.5 ⎯
7.7 12.3
5.0 ± 0.5 70 100 ⎯
⎯
5
10
⎯
32
⎯
Ta = −40 to
85°C
Unit
Min Max
1.0 12.0 ns
1.0 15.0 ns
1.0 17.0 ns
1.0 11.5 ns
1.0 11.5 ns
1.0 14.0 ns
60
⎯ MHz
⎯
10
pF
⎯
⎯
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:
ΔICC
=
fCK
⋅
VCC
( CQA
2
+
CQB
4
+
CQC
8
+
CQD
16
+
CCO )
16
CQA~CQD and CCO are the capacitances at QA~QD and CARRY OUT, respectively.
fCK is the input frequency of the CK.
Note 2: for TC74ACT161 only
7
2012-02-29
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