74VHC374 Просмотр технического описания (PDF) - STMicroelectronics
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74VHC374 Datasheet PDF : 10 Pages
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74VHC374
AC ELECTRICAL CHARACTERISTICS (Input tr = tf =3 ns)
Symb ol
Parameter
Test Condition
V CC
CL
( V)
(pF)
tPLH Propagation Delay
tPHL Time
CK to Q
tPZL Output EnableTime
tPZH
tPLZ Output Disable Time
tPHZ
tw Clock Pulse Width
HIGH or LOW
3.3(*)
3.3(*)
5.0(**)
5.0(**)
3.3(*)
3.3(*)
5.0(**)
5.0(**)
3.3(*)
5.0(**)
3.3(*)
5.0(**)
15
50
15
50
15 RL = 1KΩ
50 RL = 1KΩ
15 RL = 1KΩ
50 RL = 1KΩ
50 RL = 1KΩ
50 RL = 1KΩ
ts Setup Time D to CK
HIGH or LOW
3.3(*)
5.0(**)
th Hold Time D to CK
HIGH or LOW
fMAX Maximum Clock
Frequency
3.3(*)
5.0(**)
3.3(*)
5.0(**)
tOSLH Output to Output Skew 3.3(*)
50
tOSHL Time (note 1)
5.0(**)
50
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5V ± 0.5V
Note 1: Parameter guaranteed by design. tsoLH = |tpLHm- tpLHn|, tsoHL = |tpHLm - tpHLn|
Value
TA = 25 oC
Min. Typ. Max.
8.1 12.7
10.6 16.2
5.4 8.1
6.9 10.1
7.1 11.0
9.6 14.5
5.1 7.6
6.6 9.6
10.2 14.0
6.1 8.8
5.0
5.0
4.5
3.0
2.0
2.0
60 250
100 270
1.5
1.0
-40 to 85 oC
Min . Max.
1.0 15.0
1.0 18.5
1.0 9.5
1.0 11.5
1.0 13.0
1.0 16.5
1.0 9.0
1.0 11.0
1.0 16.0
1.0 10.0
5.5
5.0
4.5
3.0
2.0
2.0
60
100
1.5
1.0
Unit
ns
ns
ns
ns
ns
ns
MHz
ns
CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Conditions
Value
TA = 25 oC
Min. Typ. Max.
-40 to 85 oC
Min . Max.
Un it
CIN Input Capacitance
4
10
10
pF
COUT Output Capacitance
6
pF
CPD Power Dissipation
Capacitance (note 1)
32
pF
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
Test Circuit).Average operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC/8 (per Flip-Flop)
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