Datasheet

4
LTC1348
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Driver Output Voltage High/Low
vs Load Capacitance (C
L
)
Supply Current
vs Driver Data Rate
Driver Output Voltage High/Low
vs Load Capacitance (C
L
)
Driver Output Voltage High/Low
vs Temperature (°C)
TEMPERATURE (°C)
0
0
LEAKAGE CURRENT (µA)
5
15
20
25
50
45
LTC1348 G06
10
2010 30 40 60 70
30
35
40
V
OUT
= –20V
V
OUT
= 20V
V
CC
= 3.3V
LOAD CAPACITANCE (pF)
0
–7
DRIVER OUTPUT VOLTAGE HIGH/LOW
–5
–3
–1
7
6
4
2
0
–2
–4
–6
3
1000 2000 5000
5
1
3000
4000
250kbps
250kbps
120kbps
120kbps
64kbps
64kbps
20kbps
20kbps
V
CC
= 3.3V
0.1µF FLYING CAPACITORS
ALL DRIVERS LOADED 3kΩ + C
L

1 DRIVER DRIVEN
LTC1348 G01
OUTPUT HIGH
OUTPUT LOW
LOAD CAPACITANCE (pF)
0
–7
DRIVER OUTPUT VOLTAGE HIGH/LOW
–5
–3
–1
7
6
4
2
0
–2
–4
–6
3
1000 2000 5000
5
1
3000
4000
120kbps
120kbps
64kbps
64kbps
20kbps
V
CC
= 3.3V
0.1µF FLYING CAPACITORS
ALL DRIVERS DRIVEN AND 
LOADED 3kΩ + C
L
LTC1348 G02
OUTPUT HIGH
OUTPUT LOW
20kbps
Driver Leakage in SHUTDOWN
vs Temperature (°C)
TEMPERATURE (°C)
0
–7
DRIVER OUTPUT VOLTAGE HIGH/LOW
–5
–3
–1
7
6
4
2
0
–2
–4
–6
3
10 20 30 70
5
1
40
50 60
LTC1348 G04
V
CC
= 3V
V
CC
= 3V
V
CC
= 3.3V
OUTPUT HIGH
OUTPUT LOW
V
CC
= 3.3V
ALL DRIVERS
LOADED WITH 3kΩ
Driver Short-Circuit Current
vs Temperature (°C)
With V
CC
= 3.3V
All Driver Outputs Loaded with
3kΩ, 1000pF. 1 Driven at 250kbps
DRIVER DATA RATE
0
SUPPLY CURRENT (mA)
30
40
50
200
LTC1348 G03
20
10
0
50
100
150
250
3 OUTPUT LOADED
3kΩ // 2500pF
1 OUTPUT LOADED
3kΩ // 2500pF

V
CC
= 3.3V
TEMPERATURE (°C)
–40
0
SHORT-CIRCUIT CURRENT (mA)
4
8
10
12
60
20
LTC1348 G05
6
0–20 20 40 80 100
14
16
18
I
SC
–
I
SC
+
V
CC
= 3.3V
LTC1348 G07
DRIVER
INPUT
DRIVEN DRIVER
OUTPUT