5

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

SP483_SP485_0_0627

PARAMETERS

MIN.

TYP.

MAX.

UNITS CONDITIONS

SP483 DRIVER

AC Characteristics

Maximum Date Rate

250

kbps

Driver Input to Output, t

PLH

250

800

2000

ns

t

see figures 3 and 5

Driver Input to Output, t

PHL

250

800

2000

ns

t

see figures 3 and 5

Driver Skew

00

800

ns

see figures 3 and 5,

t

Driver Rise or Fall Time

250

2000

ns

From 0%-90%; R

C

and 5

Driver Enable to Output High

250

2000

ns

C

S

Driver Enable to Output Low

250

2000

ns

C

S

Driver Disable Time from High

300

3000

ns

C

S

Driver Disable Time from Low

300

3000

ns

C

S

SP483 RECEIVER

AC Characteristics

Maximum Data Rate

250

kbps

Receiver Input to Output

250

2000

ns

t

R

Differential Receiver Skew

|t

00

ns

R

see Figures 3 and 7

Receiver Enable to Output Low

20

50

ns

C

S

Receiver Enable to Output High

20

50

ns

C

S

Receiver Disable from LOW

20

50

ns

C

S

Receiver Disable from High

20

50

ns

C

S

SP483

Shutdown Timing

Time to Shutdown

50

200

600

ns

RE = 5V, DE = 0V

Driver Enable from Shutdown

to Output High

2000

ns

C

S

Driver Enable from Shutdown

to Output Low

2000

ns

C

S

Receiver Enable from

Shutdown to Output High

2500

ns

C

S

Receiver Enable from

Shutdown to Output Low

2500

ns

C

S

T

ELECTRICAL CHARACTERISTICS