Datasheet

5
LTC1334
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Receiver Output Current
vs Output High Voltage
RS232 Receiver Input Threshold
Voltage vs Temperature
Receiver Output Current
vs Output Low Voltage
OUTPUT VOLTAGE (V)
2.0
OUTPUT CURRENT (mA)
2.5
3.0
3.5 4.0
LTC1334 • TPC04
4.5
20
18
16
14
12
10
8
6
4
2
0
5.0
T
A
= 25°C
V
CC
= 5V
OUTPUT VOLTAGE (V)
0 0.5
OUTPUT CURRENT (mA)
1.0 2.01.5
2.5
3.0
LTC1334 • TPC05
40
35
30
25
20
15
10
5
0
T
A
= 25°C
V
CC
= 5V
TEMPERATURE (°C)
–50
INPUT THRESHOLD VOLTAGE (V)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
25 75
LTC1334 • TPC06
–25 0
50 100 125
INPUT HIGH
INPUT LOW
V
CC
= 5V
Charge Pump Output Voltage
vs Temperature
Supply Current
vs Temperature (RS232)
Supply Current
vs Temperature (RS485)
TEMPERATURE (°C)
–50
OUTPUT VOLTAGE (V)
10
8
6
4
2
0
–2
–4
–6
–8
–10
0
50
75
LTC1334 • TPC07
–25
25
100
125
V
DD
(NO LOAD)
V
DD
(–10mA LOAD)
V
EE
(10mA LOAD)
V
EE
(NO LOAD)
V
CC
= 5V
TEMPERATURE (°C)
–50
0
SUPPLY CURRENT (mA)
10
25
0
50
75
LTC1334 • TPC08
5
20
15
–25
25
100
125
V
CC
= 5V
NO LOAD
SEL 1 = SEL 2 = HIGH
TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
10
9
8
7
6
5
4
3
2
1
0
0
50
75
LTC1334 • TPC09
–25
25
100
125
V
CC
= 5V
NO LOAD
SEL 1 = SEL 2 = HIGH
RS485 Driver Differential Output
Voltage vs Temperature
RS485 Driver Skew
vs Temperature
RS485 Driver Differential Output
Current vs Output Voltage
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
LTC1334 • TPC10
–25
25
100
125
R
L
= 54Ω
V
CC
= 5V
DIFFERENTIAL OUTPUT VOLTAGE (V)
0
70
60
50
40
30
20
10
0
34
LTC1334 • TPC11
12 5
DIFFERENTIAL OUTPUT CURRENT (mA)
T
A
= 25°C
V
CC
= 5V
TEMPERATURE (°C)
–50
TIME (µs)
15
12
9
6
3
0
0
50
75
LTC1334 • TPC12
–25
25
100
125
V
CC
= 5V