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SP1481ECN-L/TR 데이터시트(PDF) 2 Page - Exar Corporation

부품명 SP1481ECN-L/TR
상세설명  Enhanced Low Power Half-Duplex RS-485 Transceivers
PDF  10 Pages
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제조업체  EXAR [Exar Corporation]
홈페이지  http://www.exar.com
Logo EXAR - Exar Corporation

SP1481ECN-L/TR 데이터시트(HTML) 2 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP48E-485E_00_06609
2
ABsoLUte MAXiMUM rAtinGs
Thesearestressratingsonlyandfunctionaloperationofthedeviceat
theseratingsoranyotherabovethoseindicatedintheoperationsections
ofthespecificationsbelowisnotimplied.Exposuretoabsolutemaximum
ratingconditionsforextendedperiodsoftimemayaffectreliability.
V
CC..............................................................................+7V
InputVoltages
Logic...................................................-0.3Vto(V
CC+0.5V)
Drivers................................................-0.3Vto(V
CC+0.5V)
Receivers.................................................................±15V
eLectricAL cHArActeristics
T
MINto TMAXandVCC=5V±5%unlessotherwisenoted.
pArAMeters
Min.
tYp.
MAX.
Units
conditions
sp1481e/sp1485e driver
dc characteristics
DifferentialOutputVoltage
3.5
V
CC
Volts
Unloaded;R=∞;seeFigure1
DifferentialOutputVoltage
2
V
CC
Volts
withload;R=50Ω;(RS-422);
seeFigure1
DifferentialOutputVoltage
1.5
V
CC
Volts
withload;R=27Ω;(RS-485);seeFigure1
ChangeinMagnitudeofDriver
DifferentialOutputVoltagefor
ComplimentaryStates
0.2
Volts
R=27ΩorR=50Ω;seeFigure1
DriverCommon-Mode
OutputVoltage
3
Volts
R=27ΩorR=50Ω;seeFigure1
InputHighVoltage
2.0
Volts
AppliestoDE,DI,RE
InputLowVoltage
0.8
Volts
AppliestoDE,DI,RE
InputCurrent
±10
μA
AppliestoDE,DI,RE
DriverShort-CircuitCurrent
V
OUT=HIGH
±250
mA
-7V≤V
O≤+12V
V
OUT=LOW
±250
mA
-7V≤V
O≤+12V
sp1481e/sp1485e driver
Ac characteristics
MaximumDataRate
20
Mbps
RE=5V,DE=5V;R
DIFF=54Ω,
C
L1 = CL2 = 00pF
DriverInputtoOutput
20
30
ns
t
PLH;RDIFF=54Ω,CL1 = CL2=100pF;
seeFigures3and5
DriverInputtoOutput
20
40
ns
t
PLH;RDIFF=54Ω,CLI= CL2=100pF;
(SP1485EMNONLY)
SeeFigures3and5
DriverInputtoOutput
20
30
ns
t
PHL;RDIFF=54Ω,CL1 = CL2=100pF;
seeFigures3and5
DriverInputtoOutput
20
40
ns
t
PHL;RDIFF=54Ω,CL1 = CL2=100pF;
(SP1485EMNONLY)
seeFigures3and5
DriverSkew
3
5
ns
seeFigures3and5,
t
SKEW = | tPLH - tPHL |
DriverRiseorFallTime
8
20
ns
From10%to90%;R
DIFF=54Ω,
C
L1 = CL2=100pF;seeFigures3&6
DriverEnabletoOutputHigh
40
70
ns
C
L=100pF;seeFigures4&6;S2closed
DriverEnabletoOutputLow
40
70
ns
C
L=100pF;seeFigures4&6;Sclosed
DriverDisableTimefromLow
40
70
ns
C
L=100pF;seeFigures4&6;Sclosed
DriverDisableTimefromHigh
40
70
ns
C
L=100pF;seeFigures4&6;S2 closed
OutputVoltages
Logic.............................................-0.3Vto(V
CC+0.5V)
Drivers................................................................±15V
Receivers......................................-0.3Vto(V
CC+0.5V)
StorageTemperature.....................................................-65˚Cto+150˚C
PowerDissipationperPackage
8-pinNSOIC(derate6.60mW/oCabove+70oC).........................550mW



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