74LCX646TTR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
74LCX646TTR Datasheet PDF : 13 Pages
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M74LCX646
AC ELECTRICAL CHARACTERISTICS
Test Condition
Value
Symbol
Parameter
VCC
CL RL ts = tr -40 to 85 °C
-55 to 125 °C Unit
(V)
(pF) (Ω) (ns) Min. Max. Min. Max.
tPLH tPHL Propagation Delay
2.7
1.5
9.5
1.5
9.5
Time (CAB or CBA
50 500 2.5
ns
to An or Bn)
3.0 to 3.6
1.5
8.5
1.5
8.5
tPLH tPHL Propagation Delay
2.7
1.5
8.0
1.5
8.0
Time (An to Bn or Bn
50 500 2.5
ns
to An)
3.0 to 3.6
1.5
7.0
1.5
7.0
tPLH tPHL Propagation Delay
2.7
1.5
9.5
1.5
9.5
Time (SAB or SBA
50 500 2.5
ns
to An or Bn)
3.0 to 3.6
1.5
8.5
1.5
8.5
tPZL tPZH Output Enable Time
2.7
(G, DIR to An, Bn) 3.0 to 3.6
50 500 2.5
1.5
1.5
9.5
8.5
1.5
1.5
9.5
8.5
ns
tPLZ tPHZ Output Disable Time
2.7
(G, DIR to An, Bn) 3.0 to 3.6
50 500 2.5
1.5
1.5
9.5
8.5
1.5
1.5
9.5
8.5
ns
tS
Setup Time, HIGH or
2.7
2.5
2.5
LOW level Data to
50 500 2.5
ns
CAB, CBA
3.0 to 3.6
2.5
2.5
th
Hold Time, HIGH or
2.7
1.5
1.5
LOW level Data to
50 500 2.5
ns
CAB, CBA
3.0 to 3.6
1.5
1.5
tW
CAB, CBA Pulse
2.7
4.0
4.0
Width, HIGH or
50 500 2.5
ns
LOW
3.0 to 3.6
3.3
3.3
fMAX
Clock Pulse
Frequency
3.0 to 3.6 50 500 2.5 150
150
MHz
tOSLH Output To Output
3.0 to 3.6 50 500 2.5
1.0
tOSHL
Skew Time (note1,
2)
1.0
ns
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
Test Condition
Value
Symbol
Parameter
VCC
(V)
TA = 25 °C
Unit
Min. Typ. Max.
CIN
Input Capacitance
3.3
VIN = 0 to VCC
6
pF
CI/O I/O Capacitance
3.3
VIN = 0 to VCC
10
pF
CPD Power Dissipation Capacitance
3.3
(note 1)
fIN = 10MHz
VIN = 0 or VCC
37
pF
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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