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74LCX16244 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. 74LCX16244
Description  LOW VOLTAGE CMOS 16-BIT BUS BUFFER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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74LCX16244
5/10
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
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 xVCC xfIN +ICC/16 (per
circuit)
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
2.7
50
500
2.5
1.5
5.2
1.5
5.2
ns
3.0 to 3.6
1.5
4.5
1.5
4.5
tPZL tPZH
Output Enable Time
2.7
50
500
2.5
1.5
6.3
1.5
6.3
ns
3.0 to 3.6
1.5
5.5
1.5
5.5
tPLZ tPHZ
Output Disable Time
2.7
50
500
2.5
1.5
5.7
1.5
5.7
ns
3.0 to 3.6
1.5
5.4
1.5
5.4
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
7pF
COUT
Output Capacitance
3.3
VIN = 0 to VCC
8pF
CPD
Power Dissipation Capacitance
(note 1)
3.3
fIN = 10MHz
VIN = 0 or VCC
20
pF




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