3

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com

SP48E-485E_00_06609

speciFicAtions (continued)

pArAMeters

Min.

tYp.

MAX.

Units

conditions

sp1481e/sp1485e receiver

dc characteristics

DifferentialInputThreshold

-0.2

+0.2

Volts

-7V≤V

DifferentialInputThreshold

-0.4

+0.4

Volts

-7V≤V

(SP1485EMNONLY)

InputHysteresis

20

mV

V

OutputVoltageHigh

3.5

Volts

I

OutputVoltageLow

0.4

Volts

I

Three-State(HighImpedance)

OutputCurrent

±1

µA

0.4V≤V

InputResistance

12

15

kΩ

-7V≤V

InputCurrent(A,B);V

+1.0

mA

DE=0V,V

InputCurrent(A,B);V

-0.8

mA

DE=0V,V

Short-CircuitCurrent7

95

mA

0V≤V

sp1481e/sp1485e receiver

Ac characteristics

MaximumDataRate

20

Mbps

RE=0V,DE=0V

ReceiverInputtoOutput

25

70

ns

t

C

ReceiverInputtoOutput

25

70

ns

t

C

=

100pF;Figures3&7

Diff.ReceiverSkewIt

5

10

ns

R

Figures3&7

ReceiverEnableto

OutputLow

45

70

ns

C

ReceiverEnableto

OutputHigh

45

70

ns

C

ReceiverDisablefromLow

45

70

ns

C

ReceiverDisablefromHigh45

70

ns

C

sp1481e

shutdown timing

TimetoShutdown

50

200

600

ns

RE=5V,DE=0V

DriverEnablefromShutdown

toOutputHigh

40

100

ns

C

DriverEnablefromShutdown

toOutputLow

40

100

ns

C

ReceiverEnablefrom

ShutdowntoOutputHigh

300

1000

ns

C

ReceiverEnablefrom

ShutdowntoOutputLow

300

1000

ns

C

poWer reQUireMents

SupplyVoltage

+4.75

+5.25

Volts

SupplyCurrent

SP1481E/1485E

NoLoad

900

μA

RE,DI=0VorV

600

μA

RE=0V,DI=0Vor5V;DE=0V

SP48E

ShutdownMode

10

μA

DE=0V,RE=V

CC

environMentAL And MecHAnicAL

OperatingTemperature

Commercial(_C_)

0

+70

°C

Industrial(_E_)

-40

+85

°C

(_M_)

-40

+125

°C

StorageTemperature

-65

+150

°C

Package

NSOIC(_N)

T