3

Rev. 07/28/04

SP481/483/485 Low Power Half-Duplex RS485 Transceivers

© Copyright 2002 Sipex Corporation

MECHANICAL

Operating Temperature

Commercial (_C_)

0

+70

°C

Industrial (_E_)

-40

+85

°C

Storage Temperature

-65

+150

°C

Package

Plastic DIP (_S)

NSOIC (_N)

ELECTRICAL CHARACTERISTICS

T

PARAMETERS

MIN.

TYP.

MAX.

UNITS

CONDITIONS

SP481/SP485 RECEIVER

AC Characteristics

Maximum Data Rate

5

Mbps

RE = 0V, DE = 0V

Receiver Input to Output

60

90

200

ns

t

C

Receiver Input to Output

60

90

200

ns

t

C

Diff. Receiver Skew It

13

ns

R

Figures 3 & 8

Receiver Enable to

Output Low

20

50

ns

C

Receiver Enable to

Output High

20

50

ns

C

Receiver Disable from Low

20

50

ns

C

Receiver Disable from High

20

50

ns

C

SP481

Shutdown Timing

Time to Shutdown

50

200

600

ns

RE = 5V, DE = 0V

Driver Enable from Shutdown

to Output High

40

100

ns

C

Driver Enable from Shutdown

to Output Low

40

100

ns

C

Receiver Enable from

Shutdown to Output High

300

1000

ns

C

Receiver Enable from

Shutdown to Output Low

300

1000

ns

C

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25

Volts

Supply Current

SP481/485

No Load

900

µA

RE, DI = 0V or V

µA

RE = 0V, DI = 0V or 5V; DE = 0V

SP483

No Load

600

µA

RE, DI = 0V or V

µA

RE=0V, DI = 0V or 5V; DE = 0V

SP481/SP483

Shutdown Mode

10

µA

DE = 0V, RE=V

CC

ENVIRONMENTAL AND