SP491EEN-L/TR Просмотр технического описания (PDF) - Exar Corporation

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SP491EEN-L/TR

Enhanced Full Duplex RS-485 Transceivers

Exar Corporation 

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

PARAMETERS

MIN.

SP490E RECEIVER

TYP.

ELECTRICAL CHARACTERISTICS

MAX. UNITS CONDITIONS

AC Characteristics

Maximum Data Rate 10 Mbps

Receiver Input to Output

20

45 100 ns

Receiver Input to Output

20

45 100 ns

Diff. Receiver Skew ItPLH-tPHLI 13 ns

tPLH; RDIFF = 54Ω,

CL1 = CL2 = 100pF; Figures 3 & 7

tPHL; RDIFF = 54Ω,

CL1 = CL2 = 100pF; Figures 3 & 7

RDIFF = 54Ω; CL1 = CL2 = 100pF;

Figures 3 & 7

POWER REQUIREMENTS

Supply Voltage

+4.75

+5.25 Volts

Supply Current

900 µA

ENVIRONMENTAL AND

MECHANICAL

Operating Temperature

Commercial (_C_)

Industrial (_E_)

Storage Temperature

Package

Plastic DIP (_P)

NSOIC (_N)

0

-40

-65

+70 °C

+85 °C

+150 °C

Figure 1. Driver DC Test Load Circuit

Figure 2. Receiver Timing Test Load Circuit

Figure 3. Driver/Receiver Timing Test Circuit

Figure 4. Driver Timing Test Load #2 Circuit

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510)668-7017 • www.exar.com



SP490E,491E_101_052413

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