M74HC7240F1R 查看數據表（PDF） - STMicroelectronics
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M74HC7240F1R
STMicroelectronics
M74HC7240F1R Datasheet PDF : 12 Pages
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M54/M74HC7240/7241/7244
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC CL
(V) (pF)
TA = 25 oC
54HC and 74HC
Value
-40 to 85 oC -55 to 125 oC Unit
74HC
54HC
Min. Typ. Max. Min. Max. Min. Max.
tTLH Output Transition 2.0
tTHL Time
4.5 50
25 60
75
7
12
19
ns
6.0
6
10
13
tPLH Propagation
tPHL Delay Time
2.0
4.5 50
50 125
155
15 25
31
ns
6.0
13 21
26
tPZL Output Enable
2.0
68 150
190
tPZH Time
4.5 50 RL = 1KΩ
21 30
38
ns
6.0
16 26
32
tPLZ Output Disable
2.0
48 150
190
tPHZ Time
4.5 50 RL = 1KΩ
21 30
38
ns
6.0
19 26
32
CIN Input Capacitance
5
10
10
10 pF
COUT Output
10
Capacitance
pF
CPD (*) Power Dissipation
HC7240
33
Capacitance
HC7241/7244
34
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC/8 (per channel)
TEST CIRCUIT ICC (Opr.)
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