LT1080_15 Datasheet, PDF (5/12 Pages) Linear Technology – Advanced Low Power 5V RS232 Dual Driver/Receiver

TYPICAL PERFOR A CE CHARACTERISTICS
Receiver Input Thresholds
3.00
2.75
2.50
2.25
INPUT HIGH
2.00
1.75
1.50
1.25
INPUT LOW
1.00
0.75
0.50
–55 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1080/81 G04
Receiver Output
Short-Circuit Current
100
OUTPUT SINKING
10
OUTPUT SOURCING
1
0.1
–55 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1080/81 G05
ON/OFF Pin Thresholds
5.0
4.5
4.0
3.5
3.0
2.5
2.0
MINIMUM ON VOLTAGE
1.5
1.0
MAXIMUM OFF VOLTAGE
0.5
0
–55 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1080/81 G07
Supply Current in Shutdown
1000
V_CC = 5V
100
10
1
–55 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1080/81 G08
LT1080/LT1081
ON/OFF Pin Current vs Voltage
40
35
30
25
20
15
10
5
0
–5
–10
0
1
2
3
4
5
INPUT VOLTAGE (V)
1080/81 G06
Driver Output Leakage in
Shutdown
100
10
V_OUT = 30V
1
0.1
–55 –25
V_OUT = –30V
0 25 50 75
TEMPERATURE (°C)
100 125
1080/81 G09
Output Waveforms
Shutdown to Driver Output
Shutdown to Receiver Output
5V
DRIVER _0V
OUTPUT _–5V
RECEIVER 5V
OUTPUT 0V
5V
INPUT
0V
0 2µs 4µs
V_CC = 5V
R_L = 3k
DRIVER 10V
OUTPUT 5V
HIGH 0V
RECEIVER 0V
OUTPUT –5V
LOW –10
6µs
8µs
1080/81 G10.tiff
ON/OFF 5V
INPUT 0V
0
V_CC = 5V
R_L = 3k
1ms
2ms
3ms
4ms
1080/81 G11.tiff
6V
RECEIVER 4V
OUTPUT 2V
0V
ON/OFF 5V
INPUT 0V
0 1ms
V_CC = 5V
2ms
3ms
4ms
1080/81 G11.tiff
10801fe
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