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Linear Technology Electronic Components Datasheet

LT1030 Datasheet

Quad Low Power Line Driver

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FEATURES
s Low Operating Voltage ±5V to ±15V
s Supply Current: 500µA
s Zero Supply Current When Shut Down
s Outputs Can Be Driven ±30V
s Output “Open” When Off (Three-State)
s Output Drive: 10mA
s Pinout Similar to 1488*
s Output of Several Devices Can Be Paralleled
U
APPLICATIONS
s RS232 Driver
s Micropower Interface
s Level Translator
TYPICAL APPLICATIONS
RS232 Line Driver
– 6V 1
INPUT 2
OUTPUT 3
ON/OFF
(0V TO 5V)
INPUT
OUTPUT
GND
4
5
6
7
LT1030
14 6V
13 STROBE*
12 INPUT
11 OUTPUT
10 NC
9 INPUT
8 OUTPUT
*NO CONNECTION NEEDED WHEN NOT USED
5V = ON
LT1030 • TA01
LT1030
Quad Low Power
Line Driver
DESCRIPTION
The LT®1030 is an RS232 line driver that operates over a
±5V to ±15V range on low supply current and can be shut
down to zero supply current. Outputs are fully protected
from externally applied voltages of ±30V by current limit-
ing. Since the output swings to within 200mV of the
positive supply and 1V of the negative supply, power
supply needs are minimized.
A major advantage of the LT1030 is the high impedance
output state when off or powered down, which allows
several different drivers on the same bus.
Our RS232 product line includes other high performance
devices. The LT1039 is a triple low power driver/receiver
with shutdown that can be powered from a 5V supply. The
LT1080 is a 5V powered dual driver/receiver with on-chip
±9V power generator and shutdown.
, LTC and LT are registered trademarks of Linear Technology Corporation.
*Check compatability (some pins may be different).
Output Swing vs Output Current
V+
–0.2 OUTPUT HIGH
–0.4
1.2
1.0
0.8
0.6
0.4
0.2
V
0
OUTPUT LOW
1 2 34
OUTPUT CURRENT (mA)
5
LT1030 • TA02
1


Linear Technology Electronic Components Datasheet

LT1030 Datasheet

Quad Low Power Line Driver

No Preview Available !

LT1030
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ...................................................... ±15V
Logic Input Pins ............................................. V to 25V
On/Off Pin .................................................... GND to 12V
Output (Forced) .............................. V + 30V, V + – 30V
Short-Circuit Duration (to ±30V) ..................... Indefinite
Operating Temperature Range
Commercial ............................................. 0°C to 70°C
Guaranteed Functional by Design ....... – 25°C to 85°C
Storage Temperature ............................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
V
(–15V TO –5V)
1
2
ON/OFF
(0V TO 5V)
3
4
5
6
GND 7
TOP VIEW
V+
14 (5V TO 15V)
13 STROBE
12
11
10
9
8
N PACKAGE
14-LEAD PDIP
S PACKAGE
14-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 90°C/ W (N)
TJMAX = 125°C, θJA = 95°C/ W (S)
ORDER PART
NUMBER
LT1030CN
LT1030CS
LT1030CJ
CONSULT
FACTORY
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS (Supply Voltage = ±5 to ±15V)
PARAMETER
Supply Current
Power Supply Leakage Current
Output Voltage Swing
Output Current
Output Overload Voltage (Forced)
Output Current
Input Overload Voltage (Forced)
Logic Input Levels
Logic Input Current
On/Off Pin Current
Slew Rate
CONDITIONS
VON/OFF 2.4V, IOUT = 0, All Outputs Low
VON/OFF 0.4V
VON/OFF 0.1V
Load = 2mA Positive
Negative
VSUPPLY ± 5V to ±15V
Operating or Shutdown
Shutdown VS = 0V, VOUT = ±30V
VS = ±15V, VOUT = ± 20V
Operating or Shutdown
Low Input (VOUT = High)
High Input (VOUT = Low)
VIN > 2.0V
VIN < 0.8V
0 VIN 5V
MIN
q
q
V + – 0.3V
5
q V + – 30V
q V
q
q2
q –10
4
TYP
500
1
10
V + – 0.1V
V + 0.9V
12
2
2
1.4
1.4
2
10
30
15
MAX
1000
10
150
V + 1.4V
V + 30V
100
100
15
0.8
20
20
65
30
UNITS
µA
µA
µA
V
V
mA
V
µA
µA
V
V
V
µA
µA
µA
V/µS
The q denotes specifications which apply over the full operating
temperature range.
Note 1: 3V applied to the Strobe pin will force all outputs low. Strobe pin
input impedance is about 2k to ground. Leave open when not used.
PIN FUNCTIONS
V (Pin 1): Operates – 15V to – 2V.
LOGIC INPUT (Pins 2, 5, 9, 12): Operate properly on TTL
or CMOS levels. Output valid from (V + 2V) VIN 15V.
Connect to 5V when not used.
OUTPUT (Pins 3, 6, 8, 11): Line drive outputs.
ON/OFF (Pin 4): Shuts down entire circuit. Cannot be left
open. For “normally on” operation, connect between 5V to
10V.
GND (Pin 7): Ground must be more positive than V .
STROBE (Pin 13): Forces all outputs low. Drive with 3V.
V + (Pin 14): Positive supply 5V to 15V.
14
LT1030
1
8
7
1N4001
LT1030 • PF01
Note: As with other bipolar ICs, forward biasing the substrate diode can cause
problems. The LT1030 will draw high current from V + to ground if the V pin is open
circuited or pulled above ground. If this is possible, connecting a diode from V to
ground will prevent the high current state. Any low cost diode can be used.
2


Part Number LT1030
Description Quad Low Power Line Driver
Maker Linear Technology
Total Page 4 Pages
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