RS-485 Transceivers with Integrated

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

100Ω TERMINATION RESISTOR

vs. FREQUENCY

FREQUENCY (MHz)

10

1

20

40

60

80

100

120

140

0

0.1

100

0

-10

-20

-30

MAX13450E/51E toc11

120Ω TERMINATION RESISTOR

vs. FREQUENCY

FREQUENCY (MHz)

10

1

20

40

60

80

100

120

140

0

0.1

100

0

-10

-20

-30

MAX13450E/51E toc12

DRIVER DIFFERENTIAL OUTPUT VOLTAGE

vs. TEMPERATURE

TEMPERATURE (°C)

110

95

80

65

50

35

20

5

-10

-25

1

2

3

4

5

0

-40

125

TERMINATION RESISTANCE

vs. TEMPERATURE

TEMPERATURE (°C)

110

95

80

65

50

35

20

5

-10

-25

90

100

110

120

130

80

-40

125

120

Ω RESISTOR

100

Ω RESISTOR

DRIVER PROPAGATION DELAY (250kbps)

(MAX13451E)

MAX13450E/51E toc14

1µs/div

DI

1V/div

A

1V/div

B

1V/div

SRL = HIGH

DE = HIGH

RE = HIGH

DRIVER ENABLE TIME FROM SHUTDOWN

(MAX13451E)

MAX13450E/51E toc15

200ns/div

DE

2V/div

A

2V/div

B

2V/div

SRL = LOW

RE = HIGH