SP490 datasheet(3/12 Pages) SIPEX

3 / 12 page

Date: 05/10/04

SP490/491 Full Duplex RS-485 Transceivers

MIN to TMAX and VCC = 5V ± 5% unless otherwise noted.

PARAMETERS

MIN.

TYP.

MAX.

UNITS

CONDITIONS

SP490 RECEIVER

AC Characteristics

Maximum Data Rate

Mbps

Receiver Input to Output

150

PLH; RDIFF = 54Ω,

L1 = CL2 = 100pF; Figures 3 & 8

Receiver Input to Output

150

PHL; RDIFF = 54Ω,

L1 = CL2

= 100pF; Figures 3 & 8

Diff. Receiver Skew It

PLH-tPHLI13

DIFF = 54Ω; CL1 = CL2 = 100pF;

Figures 3 & 8

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25

Volts

Supply Current

900

µA

ENVIRONMENTAL AND

CL1

15pF

CL2

RDIFF

500

Output

Under

Test

VCC

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load #2 Circuit

VOD

VOC

CRL

Receiver

Output

Test Point

VCC

Figure 1. Driver DC Test Load Circuit

Figure 2. Receiver Timing Test Load Circuit

MECHANICAL

Operating Temperature

Commercial (_C_)

+70

°C

Industrial (_E_)

-40

+85

°C

Storage Temperature

-65

+150

°C

Package

Plastic DIP (_S_)

NSOIC (_N)

ELECTRICAL CHARACTERISTICS

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