LT1081_15 Datasheet, PDF (3/12 Pages) Linear Technology – Advanced Low Power 5V RS232 Dual Driver/Receiver

LT1080/LT1081
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Driver
Output Voltage Swing
Load = 3k to GND Both Outputs
Positive
q5
7.3
V
Negative
q –5
– 6.5
V
Logic Input Voltage Level
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Data Rate (Note 6)
Slew Rate
Receiver
Input Low Level (V_OUT = High)
Input High Level (V_OUT = Low)
V_IN ≥ 2V
V_IN ≤ 0.8V
Sourcing Current, V_OUT = 0V
Sinking Current, V_OUT = 0V
SHUTDOWN (Note 3), V_OUT = ±30V
R_L = 3k, C_L = 2500pF
R_L = 3k, C_L = 1000pF
R_L = 3k, C_L = 51pF
q
1.4
0.8
V
q2
1.4
V
q
5
20
µA
q
5
20
µA
9
12
mA
–9
–12
mA
q
10
100
µA
120
kBd
250
kBd
4
15
30
V/µs
Input Voltage Thresholds
Input Low Threshold
Commercial
q 0.8
1.3
V
Industrial and Military
q 0.2
1.3
V
Input High Threshold
Commercial
q
Industrial and Military
q
1.7
2.4
V
1.7
3.0
V
Hysteresis
q 0.1
0.4
1
V
Input Resistance
Output Voltage
Output Short-Circuit Current
Output Leakage Current
Power Supply Generator (Note 4)
V⁺ Output Voltage
V^– Output Voltage
Supply Current
V_IN = ±10V
Output Low, I_OUT = –1.6mA
Output High, I_OUT = 160µA (V_CC = 5V)
Sinking Current, V_OUT = V_CC
Sourcing Current, V_OUT = 0V
SHUTDOWN (Note 3), 0V ≤ V_OUT ≤ V_CC
I_OUT = 0mA
I_OUT = 10mA
I_OUT = 15mA
I_OUT = 0mA
I_OUT = –10mA
I_OUT = –15mA
3
5
7
kΩ
q
0.2
0.4
V
q 3.5
4.8
V
–10 –20
mA
0.6
1
mA
q
1
10
µA
8.0
9.0
V
7.0
8.0
V
6.5
7.5
V
–7.5 –8.5
V
–5.5 –6.5
V
–5.0 –6.0
V
q
12
22
mA
Supply Leakage Current (V_CC)
ON/OFF Pin Current
Supply Rise Time
SHUTDOWN (Note 3), LT1080 Only
0V ≤ V_ON/OFF ≤ 5V, LT1080 Only
(Note 5), LT1080 Only
q
1
100
µA
q –15
80
µA
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.
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