LT1080, LT1081
ADVANCED LOW-POWER
5-V DUAL EIA-232 DRIVER/RECEIVERS
SLLS050A – D3121, SEPTEMBER 1989 – REVISED FEBRUARY 1991
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
CC
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Positive output supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 V
Negative output supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 12 V
Input voltage range: Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
12 V
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
30 V
ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to 12 V
Output voltage range: T1OUT, T2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V
S –
+ 30 V to V
S +
– 30 V
R1OUT, R2OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to V
CC
+ 0.3 V
Duration of output short circuit at (or below) 25°C: V
S +
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 s
V
S –
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 s
Driver or receiver output . . . . . . . . . . . . . . . . . . . unlimited
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range: LT1080C, LT1081C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
LT1080I, LT1081I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
NOTE 1: All voltage values are with respect to network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
DW
N
TA
≤
25°C
POWER RATING
1025 mW
1150 mW
DERATING FACTOR
ABOVE TA = 25°C
8.2 mW/°C
9.2 mW/°C
TA = 70°C
POWER RATING
656 mW
736 mW
TA = 85°C
POWER RATING
533 mW
598 mW
recommended operating conditions
LT1080C, LT1081C
MIN
Supply voltage, VCC
High-level input voltage, VIH (T1IN, T2IN)
Low-level input voltage, VIL (T1IN, T2IN)
Operating free-air temperature, TA
0
4.5
2
TYP
5
MAX
5.5
5.5
0.8
70
– 40
LT1080I, LT1081I
MIN
4.5
2
TYP
5
MAX
5.5
5.5
0.8
85
UNIT
V
V
V
°C
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
2–3
TI [ TEXAS INSTRUMENTS ]
