LT1080, LT1081
ADVANCED LOW-POWER
5-V DUAL EIA-232 DRIVER/RECEIVERS
SLLS050A – D3121, SEPTEMBER 1989 – REVISED FEBRUARY 1991
TYPICAL CHARACTERISTICS
†
HIGH- AND LOW-LEVEL
DRIVER OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
10
8
VO – Driver Output Voltage – V
6
4
Output High
2
0
–2
–4
–6
–8
– 10
– 50
VCC = 5.5 V
– 25
0
25
50
75
100
TA – Free-Air Temperature –
°C
125
VCC = 4.5 V
RL = 3 kΩ
VCC = 5 V
VCC = 4.5 V
I OZ – High-Impedance Output Current –
µ
A
VCC = 5.5 V
10
Shutdown Mode
4
HIGH-IMPEDANCE
DRIVER OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
1
Output Low
VCC = 5 V
0.4
VO = 30 V
0.1
–50
–25
VO = – 30 V
125
75
0
25
50
100
TA – Free-Air Temperature –
°C
Figure 1
POSITIVE-GOING AND NEGATIVE-GOING
RECEIVER INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
3
2.75
VT – Input Threshold Voltage – V
Source or Sink Current – mA
2.5
2.25
2
1.75
1.5
1.25
1
0.75
0.5
– 50
– 25
0
25
50
75
100
TA – Free-Air Temperature –
°C
125
0.1
– 50
– 25
VT–
VT+
100
Figure 2
RECEIVER SOURCE CURRENT
AND SINK CURRENT
vs
FREE-AIR TEMPERATURE
IOLS (sinking)
10
IOHS (sourcing)
1
75
0
25
50
100
TA – Free-Air Temperature –
°C
125
Figure 3
Figure 4
† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
2–5
TI [ TEXAS INSTRUMENTS ]
