Datasheet
8
LTC1484
RO (Pin 1): Receiver Output. If the receiver output is en-
abled (RE low) and the part is not in shutdown, RO is high
if (A – B) > V
TH(MAX)
and low if (A – B) < V
TH(MIN)
. RO is
also high if the receiver inputs are open or shorted to-
gether, with or without a termination resistor.
RE (Pin 2): Receiver Output Enabled. A high on this pin
three-states the receiver output (RO) and a low enables it.
DE (Pin 3): Driver Enable Input. DE = high enables the
output of the driver with the driver outputs determined by
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Driver Output High Voltage vs
Output Current
Driver Output Low Voltage vs
Output Current
Driver Propagation Delay vs
Temperature
Driver Short-Circuit Current vs
Temperature Driver Skew vs Temperature
Driver Propagation Delay vs
Supply Voltage
OUTPUT CURRENT (mA)
–100
–90 –80 –70 –60 –50 –40 –30 –20 –10 0
DRIVER OUTPUT HIGH VOLTAGE (V)
1484 G31
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 4.75V
OUTPUT CURRENT (mA)
0
10 20 30 40 50 60 70 80 90 100
DRIVER OUTPUT LOW VOLTAGE (V)
1484 G32
3.0
2.5
2.0
1.5
1.0
0.5
0
V
CC
= 4.75V
TEMPERATURE (°C)
–55
DRIVER PROPAGATION DELAY (ns)
1484 G33
50
45
40
35
30
25
20
15
10
5
0
V
CC
= 5V
t
PHL
t
PLH
–35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
–55
DRIVER SHORT-CIRCUIT CURRENT (mA)
1484 G34
250
200
150
100
50
0
V
CC
= 5.25V
DRIVER OUTPUT HIGH
SHORT TO –7V
DRIVER OUTPUT LOW
SHORT TO 10V
–35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
–55
DRIVER SKEW (ns)
1484 G35
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–35 –15 5 25 45 65 85 105 125
SUPPLY VOLTAGE (V)
4.5
4.75 5 5.25 5.5
DRIVER PROPAGATION DELAY (ns)
1484 G36
40
35
30
25
20
15
10
5
0
T
A
= 25°C
t
PHL
t
PLH
PIN FUNCTIONS
UUU
the DI pin. DE = low forces the driver outputs into a high
impedance state. The LTC1484 enters shutdown when
both receiver and driver outputs are disabled (RE is high
and DE is low).
DI (Pin 4): Driver Input. When the driver outputs are
enabled (DE high), DI high takes the A output high and the
B output low. DI low takes the A output low and the B
output high.
GND (Pin 5): Ground.