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

SP33_00_0260

SPECIFICATIONS

PARAMETER

MIN.

TYP.

MAX.

UNITS CONDITIONS

POWER REQUIREMENTS

Supply Voltage V

CC

+4.75

+5.25

Volts

Supply Current I

CC

No Load (T

0

5

mA

SEL_A ► SEL_D = "0001"

No Load (RS-232 Mode)

5

30

mA

SEL_A ► SEL_D = "0000"

No Load (RS-485 Mode)

7

20

mA

SEL_A ► SEL_D = "1100"

ENVIRONMENTAL

Operating Temperature

Commercial (_C_)

0

70

ºC

Industrial (_E_)

-40

+85

ºC

Storage Temperature

-65

+50

ºC

RECEIVER INPUT gRAPH

RS-485 RECEIVER

+1.0mA

-0.6mA

+6V

+12V

-3V

-7V

Maximum Input Current

Versus Voltage

1 Unit Load

TEST CIRCUITS

A

B

R

R

Figure . Driver DC Test Load Circuit

C

L1

15pF

RO

A

B

A

B

DI

C

L2

R

L

Figure 2. Driver/Receiver Timing Test Circuit

500Ω

Output

Under

Test

Figure 3. Driver Timing Test Load #2 Circuit

Limits are specified at T

Note 1: Exceeding the maximum data rate of 8Mbps at T