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74VHCT273AMTR 数据表(PDF) 5 Page - STMicroelectronics

部件名 74VHCT273AMTR
功能描述  OCTAL D-TYPE FLIP FLOP WITH CLEAR
Download  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74VHCT273AMTR 数据表(HTML) 5 Page - STMicroelectronics

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Table 9: Capacitive Characteristics
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
Flip-Flop)
Table 10: Dynamic Switching Characteristics
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.0V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.0V. Inputs under test switching: 3.0V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
Figure 3: Test Circuit
CL =15/50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
Symbol
Parameter
Test Condition
Value
Unit
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
CIN
Input Capacitance
610
10
10
pF
CPD
Power Dissipation
Capacitance
(note 1)
16
pF
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25°C
-40 to 85°C
-55 to 125°C
Min.
Typ.
Max.
Min.
Max.
Min.
Max.
VOLP
Dynamic Low
Voltage Quiet
Output (note 1, 2)
5.0
CL = 50 pF
0.6
0.9
V
VOLV
-0.9
-0.6
VIHD
Dynamic High
Voltage Input
(note 1, 3)
5.0
2.0
VILD
Dynamic Low
Voltage Input
(note 1, 3)
5.0
0.8


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