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74LCX125 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
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74LCX125 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
74LCX125
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 , Input tr = tf = 2.5 ns)
Symb ol
Parameter
Test Condition
VCC
W av ef o rm
(V)
Value
-40 to 85 oC
Min. Max.
Un it
tPLH Propagation Delay Time
tPHL
2.7
3.0 to 3.6
1
6.5
ns
1.0 6.0
tPZL Output Enable Time to HIGH and LOW
tPZH level
2.7
3.0 to 3.6
2
1.0 8.0
ns
1.0 7.0
tPLZ Output Disable Time from HIGH and
tPHZ LOW level
2.7
3.0 to 3.6
2
1.0 7.0
ns
1.0 6.0
tOSLH Output to Output Skew Time (note 1, 2)
3.0 to 3.6
1.0 ns
tOSHL
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any twooutputs of the same device switching in the
same direction, either HIGH or LOW (tOSLH = |tPLHm - tPLHn|, tOSHL = |tPHLm - tpHLn|)
2) Parameter guaranteed by design
CAPACITIVE CHARACTERISTICS
Symb ol
Parameter
Test Co nditi ons
VCC
(V)
Valu e
TA = 25 oC
Min. T yp. Max.
Unit
CIN Input Capacitance
3.3
VIN = 0 to VCC
6
pF
COUT Output Capacitance
3.3
VIN = 0 to VCC
10
pF
CPD Power Dissipation Capacitance (note 1) 3.3
fIN = 10MHz
40
pF
VIN = 0 or VCC
1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. Average
operting current can be obtained by the following equation. ICC(opr) = CPD VCC fIN + ICC/4 (per gate)
TEST CIRCUIT
TEST
tPLH, tPHL
tPZL, tPLZ
tPZH, tPHZ
CL = 50 pF or equivalent (includes jigand probe capacitance)
RL = R1 = 500orequivalent
RT = ZOUT of pulse generator (typically 50)
4/8
SW IT CH
Open
6V
GND
 

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