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74LCX373 数据表(PDF) 5 Page - STMicroelectronics

部件名 74LCX373
功能描述  OCTAL D-TYPE LATCH NON-INVERTING (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
PDF  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

74LCX373 数据表(HTML) 5 Page - STMicroelectronics

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Table 8: AC Electrical Characteristics
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|)
2) Parameter guaranteed by design
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 latch)
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
CL
(pF)
RL
(
Ω)
ts = tr
(ns)
-40 to 85 °C
-55 to 125 °C
Min.
Max.
Min.
Max.
tPLH tPHL
Propagation Delay
Time (Dn to Qn)
2.7
50
500
2.5
1.5
9.0
1.5
9.0
ns
3.0 to 3.6
1.5
8.0
1.5
8.0
tPLH tPHL
Propagation Delay
Time (LE to Qn)
2.7
50
500
2.5
1.5
9.5
1.5
9.5
ns
3.0 to 3.6
1.5
8.5
1.5
8.5
tPZL tPZH
Output Enable Time
to HIGH and LOW
level
2.7
50
500
2.5
1.5
9.5
1.5
9.5
ns
3.0 to 3.6
1.5
8.5
1.5
8.5
tPLZ tPHZ
Output Disable Time
from HIGH to LOW
level
2.7
50
500
2.5
1.5
8.5
1.5
8.5
ns
3.0 to 3.6
1.5
7.5
1.5
7.5
tS
Set-Up Time, HIGH
or LOW level
(Dn to LE)
2.7
50
500
2.5
2.5
2.5
ns
3.0 to 3.6
2.5
2.5
th
Hold Time, HIGH or
LOW level
(Dn to LE)
2.7
50
500
2.5
1.5
1.5
ns
3.0 to 3.6
1.5
1.5
tW
LE Pulse Width,
HIGH
2.7
50
500
2.5
3.3
3.3
ns
3.0 to 3.6
3.3
3.3
tOSLH
tOSHL
Output To Output
Skew Time (note1,
2)
3.0 to 3.6
50
500
2.5
1.0
1.0
ns
Symbol
Parameter
Test Condition
Value
Unit
VCC
(V)
TA = 25 °C
Min.
Typ.
Max.
CIN
Input Capacitance
3.3
VIN = 0 to VCC
6pF
COUT
Output Capacitance
3.3
VIN = 0 to VCC
12
pF
CPD
Power Dissipation Capacitance
(note 1)
3.3
fIN = 10MHz
VIN = 0 or VCC
50
pF



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