SP3485EP datasheet(3/9 Pages) SIPEX

Part #	SP3485EP

Description	3.3V Low Power Half-Duplex RS-485 Transceivers with 10Mbps Data Rate

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Manufacturer	SIPEX [Sipex Corporation]

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3

10/15/02

SP3481/3485 Low Power Half-Duplex RS485 Transceivers

SPECIFICATIONS (continued)

T

AMB = TMIN to TMAX and VCC = +3.3V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX.

UNITS

CONDITIONS

SP3481/SP3485 RECEIVER

AC Characteristics

Maximum Data Rate

10

Mbps

RE = 0V, DE = 0V

Receiver Input to Output, t

PLH

40

70

100

ns

Figures 6 and 11

70

ns

T

AMB = +25

oC, V

CC = +3.3V,

Figures 6 and 11

Receiver Input to Output, t

PHL

40

70

100

ns

Figures 6 and 11

70

ns

T

AMB = +25

oC, V

CC = +3.3V,

Figures 6 and 11

Differential Receiver Skew

4

ns

t

RSKEW = tRPHL - tRPLH, Figures 6 and 11

Receiver Enable to

Output Low

35

60

ns

Figures 7 and 12; S

1 closed, S2 open

Receiver Enable to

Output High

35

60

ns

Figures 7 and 12; S

2 closed, S1 open

Receiver Disable from Low

35

60

ns

Figures 7 and 12; S

1 closed, S2 open

Receiver Disable from High

35

60

ns

Figures 7 and 12; S

2 closed, S1 open

SP3481 Shutdown Timing

Time to Shutdown

50

75

200

ns

RE = 3.3V, DE = 0V

Driver Enable from Shutdown

to Output High

65

150

ns

Figures 4 and 10

Driver Enable from Shutdown

to Output Low

65

150

ns

Figures 5 and 10

Receiver Enable from

Shutdown to Output High

50

200

ns

Figures 7 and 12; S

2 closed, S1 open

Receiver Enable from

Shutdown to Output Low

50

200

ns

Figures 7 and 12; S

1 closed, S2 open

POWER REQUIREMENTS

Supply Current

SP3481/3485

No Load

1000

2000

µA

RE, DI = 0V or V

CC; DE = VCC

800

1500

µA

RE = 0V, DI = 0V or V

CC; DE = 0V

SP3481

Shutdown Mode

10

µA

DE = 0V, RE=V

CC

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