5

LTC1685

DI (Pin 4): Driver Input. Controls the states of the A and

B outputs only if DE = High. If DE = Low, DI will have no

effect on A and B pins. Do not float.

GND (Pin 5): Ground.

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

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

0.1

µF ceramic capacitor.

RO (Pin 1): Receiver Output. If A

≥ B by 300mV, then RO

will be high. If A

≤ B by 300mV, then RO will be low.

RE (Pin 2): Receiver Enable. RE = Low enables the

receiver. RE = High forces receiver output into high

impedance state. Do not float.

DE (Pin 3): Driver Enable. DE = High enables the driver.

DE = Low will force the driver output into a high impedance

state and the device will function as a line receiver if RE is

also low. Do not float.

Driver Propagation Delay

vs Temperature

TEMPERATURE (

°C)

–20

0

5

10

15

20

25

0

20

40

60

1685 G07

80

100

Driver Propagation Delay

vs Driver Input Voltage

DRIVER INPUT VOLTAGE (V)

2.5

15

20

25

4.5

1685 G08

10

5

0

3.0

3.5

4.0

5.0

INPUT THRESHOLD = 1.5V

Driver Propagation Delay

vs Capacitive Load

LOAD CAPACITANCE (pF)

5

16.0

16.5

17.0

17.5

18.0

19.0

15

25

50

75

1685 G11

100

150

18.5