Datasheet

3
LT1080/LT1081
10801fe
E
LECTR
IC
AL C CHARA TERIST
ICS
The ● denotes the specifications which apply over the full operating
PARAMETER CONDITIONS MIN TYP MAX UNITS
Driver
Output Voltage Swing Load = 3k to GND Both Outputs Positive ● 5 7.3 V
Negative
● –5 –6.5 V
Logic Input Voltage Level Input Low Level (V
OUT
= High) ● 1.4 0.8 V
Input High Level (V
OUT
= Low) ● 2 1.4 V
Logic Input Current V
IN
≥ 2V ● 520 µA
V
IN
≤ 0.8V ● 520 µA
Output Short-Circuit Current Sourcing Current, V
OUT
= 0V 9 12 mA
Sinking Current, V
OUT
= 0V –9 –12 mA
Output Leakage Current SHUTDOWN (Note 3), V
OUT
= ±30V ● 10 100 µA
Data Rate (Note 6) R
L
= 3k, C
L
= 2500pF 120 kBd
R
L
= 3k, C
L
= 1000pF 250 kBd
Slew Rate R
L
= 3k, C
L
= 51pF 4 15 30 V/µs
Receiver
Input Voltage Thresholds Input Low Threshold Commercial ● 0.8 1.3 V
Industrial and Military
● 0.2 1.3 V
Input High Threshold Commercial ● 1.7 2.4 V
Industrial and Military
● 1.7 3.0 V
Hysteresis ● 0.1 0.4 1 V
Input Resistance V
IN
= ±10V 3 5 7 kΩ
Output Voltage Output Low, I
OUT
= –1.6mA ● 0.2 0.4 V
Output High, I
OUT
= 160µA (V
CC
= 5V) ● 3.5 4.8 V
Output Short-Circuit Current Sinking Current, V
OUT
= V
CC
–10 –20 mA
Sourcing Current, V
OUT
= 0V 0.6 1 mA
Output Leakage Current SHUTDOWN (Note 3), 0V ≤ V
OUT
≤ V
CC
● 110 µA
Power Supply Generator (Note 4)
V
+
Output Voltage I
OUT
= 0mA 8.0 9.0 V
I
OUT
= 10mA 7.0 8.0 V
I
OUT
= 15mA 6.5 7.5 V
V
–
Output Voltage I
OUT
= 0mA –7.5 –8.5 V
I
OUT
= –10mA –5.5 –6.5 V
I
OUT
= –15mA –5.0 –6.0 V
Supply Current ● 12 22 mA
Supply Leakage Current (V
CC
) SHUTDOWN (Note 3), LT1080 Only ● 1 100 µA
ON/OFF Pin Current 0V ≤ V
ON/OFF
≤ 5V, LT1080 Only ● –15 80 µA
Supply Rise Time (Note 5), LT1080 Only 1 ms
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: These parameters apply for 4.5V ≤ V
CC
≤ 5.5V and V
ON/OFF
= 3V,
unless otherwise specified.
Note 3: V
ON/OFF
= 0.4V for –55°C ≤ T
A
≤ 50°C, and V
ON/OFF
= 0.2V for
50°C ≤ T
A
≤ 125°C. (LT1080 only)
Note 4: Unless otherwise specified, V
CC
= 5V, external loading of V
+
and
V
–
equals zero and the driver outputs are low (inputs high).
Note 5: Time from either SHUTDOWN high or power on until V
+
≥ 6V and
V
–
≤ –6V. All external capacitors are 1µF.
Note 6: Data rate operation guaranteed by slew rate, short-circuit current
and propagation delay tests.
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)