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TC74ACT161FN 数据表(PDF) 7 Page - Toshiba Semiconductor

部件名 TC74ACT161FN
功能描述  CMOS Digital Integrated Circuit Silicon Monolithic Synchronous Presettable 4-Bit Binary Counter
PDF  13 Pages
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制造商  TOSHIBA [Toshiba Semiconductor]
网页  http://www.semicon.toshiba.co.jp/eng
标志 TOSHIBA - Toshiba Semiconductor

TC74ACT161FN 数据表(HTML) 7 Page - Toshiba Semiconductor

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TC74ACT161,163P/F/FN
2007-10-01
7
AC Characteristics (CL = 50 pF, RL = 500 Ω, input: tr = tf = 3 ns)
Test Condition
Ta
= 25°C
Ta
= −40 to
85°C
Characteristics
Symbol
VCC (V)
Min
Typ.
Max
Min
Max
Unit
Propagation delay
time
(CK-Q)
tpLH
tpHL
Figure 1
5.0
± 0.5
⎯
7.2
10.5
1.0
12.0
ns
Propagation delay
time
(CK-CARRY, count
mode)
tpLH
tpHL
Figure 1
5.0
± 0.5
⎯
8.5
13.0
1.0
15.0
ns
Propagation delay
time
(CK-CARRY, preset
mode)
tpLH
tpHL
Figure 2
5.0
± 0.5
⎯
9.7
15.0
1.0
17.0
ns
Propagation delay
time
(ENT-CARRY)
tpLH
tpHL
Figure 6
5.0
± 0.5
⎯
6.6
10.0
1.0
11.5
ns
Propagation delay
time
(Note 2)
( CLR -Q)
tpHL
Figure 4
5.0
± 0.5
⎯
6.3
10.0
1.0
11.5
ns
Propagation delay
time
(Note 2)
(
CLR -CARRY)
tpHL
Figure 4
5.0
± 0.5
⎯
7.7
12.3
1.0
14.0
ns
Maximum clock
frequency
fmax
⎯
5.0
± 0.5
70
100
⎯
60
⎯
MHz
Input capacitance
CIN
⎯
⎯
5
10
⎯
10
pF
Power dissipation
capacitance
CPD
(Note 1)
⎯
⎯
32
⎯
⎯
⎯
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
I
CO
QD
QC
QB
QA
CC
CK
CC
+
+
+
+
⋅
=
Δ
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



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