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ST34C87 Datasheet, PDF (3/8 Pages) Exar Corporation – QUAD RS-422 CMOS Differential Line Driver
ST34C87
AC ELECTRICAL CHARACTERISTICS
Test Conditions: -40°C - +85°C, VCC = 5.0V + 10% unless otherwise specified.
Symbol Parameter
Min. Typ. Max. Unit Conditions
T1
Propagation Delay, Input to
Output
8
10
ns S1 open
T2
Differential Output Rise and Fall
Time
8
10
ns S1 open
T3
Output Enable Time
T4
Output Disable Time
T51
Skew
18
20
18
20
2
ns S1 close
ns S1 close
ns S1 open
Note:
1 Skew is defined as the difference in propagation delays between complementary outputs at the 50% point.
DC ELECTRICAL CHARACTERISTICS
Test Conditions: TA = -40°C - +85°C, VCC = 5.0V + 10% unless otherwise specified.
Symbol
IIN
ICC
IOZ
VIH
VIL
VOH
VOL
VOS
VOC
VOD
CIN
CPD
IOS
IOFF
Parameter
Input Current
Operating Current
Three-State Output Leakage
Input High Level
Input Low Level
Output High Level
Output Low Level
Differential Output Level
Common Mode Output Voltage
Difference in Common Mode
Output
Input Capacitance
Power Dissipation Capacitance
Output Short Current
Output Leakage Current Power
Off
IDC
Output Current
Min.
2.0
2.5
2.0
7
-200
Typ. Max.
+1.0
600
+2.0
0.8
0.5
3.0
0.4
10
15
100
-30
100
-100
+150
Unit Conditions
mA
mA
mA
V
V
V
V
V
RL=100W
V
RL=100W
RL=100W
pF
pF
mA VIN=VCC or GND
mA VOUT=6V
mA VOUT=0.25V
mA
Specifications are subject to change without notice
Rev. 1.01
3