4

LTC1481

1481fa

Driver Output High Voltage

vs Output Current

OUTPUT VOLTAGE (V)

0

4

5

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

1481 G04

12

3

TEMPERATURE (

°C)

–50

3.0

2.5

2.0

1.5

1.0

0.5

0

25

75

1481 G05

–25

0

50

100

125

TEMPERATURE (

°C)

–50

14

12

10

8

6

4

2

0

25

75

1481 G05

–25

0

50

100

125

Driver Skew vs Temperature

Receiver

Temperature

LTC1481 Transmitting

INPUTS

OUTPUTS

RE

DE

DI

B

A

X

110

1

X

101

0

00

X

Z

Z

1

0

X

Z*

Z*

*Shutdown mode for LTC1481

LTC1481 Receiving

INPUTS

OUTPUTS

RE

DE

A – B

RO

00

≥0.2V

1

00

≤–0.2V

0

0

0

Inputs Open

1

10

X

Z*

*Shutdown mode for LTC1481

DI (Pin 4): Driver Input. If the driver outputs are enabled

(DE high) then a low on DI forces the outputs A low and B

high. A high on DI with the driver outputs enabled will force

A high and B low.

GND (Pin 5): Ground.

A (Pin 6): Driver Output/Receiver Input.

B (Pin 7): Driver Output/Receiver Input.

RO (Pin 1): Receiver Output. If the receiver output is

enabled (RE low), then if A > B by 200mV, RO will be high.

If A < B by 200mV, then RO will be low.

RE (Pin 2): Receiver Output Enable. A low enables the

receiver output, RO. A high input forces the receiver

output into a high impedance state.

DE (Pin 3): Driver Outputs Enable. A high on DE enables

the driver output. A, B and the chip will function as a line

driver. A low input will force the driver outputs into a high

impedance state and the chip will function as a line

receiver. If RE is high and DE is low, the part will enter a low

power (1

µA) shutdown state.

TYPICAL PERFOR A CE CHARACTERISTICS

PI FU CTIO S

FU CTIO TABLES