74VHC240 Просмотр технического описания (PDF) - STMicroelectronics
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74VHC240 Datasheet PDF : 9 Pages
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74VHC240
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns)
Test Condition
Value
Symbol
Parameter
VCC CL
(V) (pF)
TA = 25°C
Min. Typ. Max.
tPLH Propagation Delay 3.3(*) 15
5.3
tPHL Time
3.3(*) 50
7.8
5.0(**) 15
3.6
5.0(**) 50
5.1
tPZL Output Enable
3.3(*) 15 RL = 1KΩ
6.6
tPZH Time
3.3(*) 50 RL = 1KΩ
9.1
5.0(**) 15 RL = 1KΩ
4.7
5.0(**) 50 RL = 1KΩ
6.2
tPLZ
tPHZ
Output Disable
Time
3.3(*) 50
5.0(**) 50
RL = 1KΩ
RL = 1KΩ
10.3
6.7
tOSLH
tOSHL
Output to Output 3.3(*) 50
Skew time (note 1) 5.0(**) 50
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5.0V ± 0.5V
Note 1 : Parameter guaranteed by design. tsoLH = |tpLHm - tpLHn|, tsoHL = |tpHLm - tpHLn|
7.5
11.0
5.5
7.5
10.6
14.1
7.3
9.3
14.0
9.2
1.5
1.0
-40 to 85°C -55 to 125°C
Min. Max. Min. Max.
1.0 9.0 1.0 9.0
1.0 12.5 1.0 12.5
1.0 6.5 1.0 6.5
1.0 8.5 1.0 8.5
1.0 12.5 1.0 12.5
1.0 16.0 1.0 16.0
1.0 8.5 1.0 8.5
1.0 10.5 1.0 10.5
1.0 16.0 1.0 16.0
1.0 10.5 1.0 10.5
1.5
1.5
1.0
1.0
Unit
ns
ns
ns
ns
CAPACITIVE CHARACTERISTICS
Test Condition
Value
Symbol
Parameter
TA = 25°C
-40 to 85°C -55 to 125°C Unit
Min. Typ. Max. Min. Max. Min. Max.
CIN Input Capacitance
6 10
10
10 pF
COUT
Output
Capacitance
8
pF
CPD Power Dissipation
Capacitance
17
pF
(note 1)
1) 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 operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/8 (per circuit)
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