Datasheet

5
LTC1321/LTC1322/LTC1335
RS485 Driver Differential Output
Voltage vs Temperature
TEMPERATURE (°C)
–50
DIFFERENTIAL OUTPUT VOLTAGE (V)
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
0
50
75
1321 G01
–25
25
100
125
R
L
= 54Ω
RS485 Driver Output High Voltage
vs Output Current
EIA562 Driver Output Voltage
vs Temperature
OUTPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
3
5
1321 G04
12 4
–80
–70
–60
–50
–40
–30
–20
–10
0
T
A
= 25°C
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
5
4
3
2
1
0
–1
–2
–3
–4
–5
0
50
75
1321 G07
–25
25
100
125
R
L
= 3k
OUTPUT HIGH
OUTPUT LOW
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
TEMPERATURE (°C)
–50
TIME (µs)
15
12
9
6
3
0
0
50
75
1321 G03
–25
25
100
125
RS485 Driver Skew vs
Temperature
EIA562 Driver Output Short-Circuit
Current vs Temperature
TEMPERATURE (°C)
–50
OUTPUT SHORT-CIRCUIT CURRENT (mA)
18
16
14
12
10
8
6
25 75
1321 G09
–25 0
50 100 125
SOURCE
V
OUT
= 0V
SINK
DIFFERENTIAL OUTPUT VOLTAGE (V)
0
70
60
50
40
30
20
10
0
34
1321 G02
12 5
DIFFERENTIAL OUTPUT CURRENT (mA)
T
A
= 25°C
RS485 Driver Differential Output
Current vs Output Voltage
OUTPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
120
100
80
60
40
20
0
1234
1321 G05
5
T
A
= 25°C
RS485 Driver Output Low Voltage
vs Output Current
EIA562 Driver Output Voltage
vs Supply Voltage
V
DD
SUPPLY VOLTAGE (V)
4
OUTPUT VOLTAGE (V)
5
6
78
1321 G08
9
10
8
6
4
2
0
–2
–4
–6
–8
–10
10
R
L
= 3k
T
A
= 25°C
V
EE
= –V
DD
OUTPUT HIGH
OUTPUT LOW
RS485 Driver Output Short-Circuit
Current vs Temperature
TEMPERATURE (°C)
–50
OUTPUT SHORT-CIRCUIT CURRENT (mA)
160
140
120
100
80
60
40
25 75
1321 G19
–25 0
50 100 125
SOURCE
(V
OUT
= 0V)
SINK
(V
OUT
= 5V)