LTC485

5

485fi

Typical perForMance characTerisTics

vs Temperature

Driver Skew vs Temperature

Supply Current vs Temperature

TEMPERATURE (°C)

–50

3.0

3.5

4.5

5.0

5.5

75

7.5

485 G10

4.0

0

125

6.0

6.5

7.0

–25

25

50

100

TEMPERATURE (°C)

–50

0

0.6

1.8

2.4

3.0

75

5.4

485 G11

1.2

0

125

3.6

4.2

4.8

–25

25

50

100

TEMPERATURE (°C)

–50

100

160

280

340

400

75

640

485 G12

220

0

125

460

520

580

–25

25

50

100

DRIVER ENABLED

DRIVER DISABLED

pin FuncTions

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

abled (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

receiveroutput,RO.Ahighinputforcesthereceiveroutput

into a high impedance state.

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

the driver output. A and 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.

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 Connection.

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

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