LT1030C
QUADRUPLE LOW-POWER LINE DRIVER
SLLS048F ± APRIL 1989 ± REVISED APRIL 1998
D Low Supply Voltage . . . ±5 V to ±15 V |
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D OR N PACKAGE |
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D Supply Current . . . 500 μA Typical |
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(TOP VIEW) |
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D Zero Supply Current When Shut Down |
VCC± |
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1 |
14 |
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VCC+ |
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D Outputs Can Be Driven ±30 V |
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IN1 |
2 |
13 |
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STROBE |
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D Output Open When Off (3-State) |
OUT1 |
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3 |
12 |
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IN4 |
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D 10-mA Output Drive |
ON/OFF |
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4 |
11 |
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OUT4 |
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IN2 |
5 |
10 |
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NC |
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D Outputs of Several Devices Can Be |
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OUT2 |
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IN3 |
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6 |
9 |
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Connected in Parallel |
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GND |
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OUT3 |
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7 |
8 |
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DMeets or Exceeds the Requirements of
ANSI EIA/TIA-232-F Specifications |
NC ± No internal connection |
DDesigned to Be Interchangeable With Linear Technology LT1030
description
The LT1030C is an EIA/TIA-232-F line driver that operates over a ±5-V to ±15-V supply-voltage range on low supply current. The device can be shut down to zero supply current. Current limiting fully protects the outputs from externally applied voltages of ±30 V. Since the output swings to within 200 mV of the positive supply and to within 1 V of the negative supply, supply-voltage requirements are minimized.
A major advantage of the LT1030C is the high-impedance output state when the device is off or powered down. This feature allows several different drivers on the same bus.
The device can be used as an EIA/TIA-232-F driver, micropower interface, or level translator, among others.
The LT1030C is characterized for operation from 0°C to 70°C.
AVAILABLE OPTIONS
PACKAGE
SMALL OUTLINE |
PLASTIC DIP |
(D) |
(N) |
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LT1030CD |
LT1030CN |
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The D package is available taped and reeled.
Add the suffix R to the device type (i.e.,
LT1030CDR).
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 1998, Texas Instruments Incorporated
POST OFFICE BOX 655303 •DALLAS, TEXAS 75265 |
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LT1030C
QUADRUPLE LOW-POWER LINE DRIVER
SLLS048F ± APRIL 1989 ± REVISED APRIL 1998
logic symbol²
13 |
G1 |
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STROBE |
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4 |
EN |
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ON/OFF |
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2 |
1 |
3 |
IN1 |
OUT1 |
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5 |
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6 |
IN2 |
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OUT2 |
9 |
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8 |
IN3 |
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OUT3 |
12 |
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11 |
IN4 |
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OUT4 |
² This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram
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ON/OFF |
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13 |
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STROBE |
3 |
2 |
OUT1 |
IN1 |
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5 |
6 |
OUT2 |
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IN2 |
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9 |
8 |
OUT3 |
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IN3 |
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12 |
11 |
OUT4 |
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IN4 |
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Terminal Functions
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TERMINAL |
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DESCRIPTION |
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NAME |
NO. |
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GND |
7 |
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Ground terminal |
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IN1 |
2 |
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IN2 |
5 |
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Logic inputs. INx operate properly on TTL or CMOS levels. Output valid from VI = VCC± + 2 V to 15 V. Connect to 5 V |
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IN3 |
9 |
when not used. |
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IN4 |
12 |
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4 |
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ON/OFF |
shuts down the entire circuit. It cannot be left open. For normally on operation, connect between 5 V and 10 V. |
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ON/OFF |
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If VIL is at or near 0.8 V, significant settling time may be required. |
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OUT1 |
3 |
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OUT2 |
6 |
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Line driver outputs |
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OUT3 |
8 |
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OUT4 |
11 |
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forces all outputs low. Drive with 3 V. Strobe terminal input impedance is approximately 2 kΩ to GND. Leave |
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13 |
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STROBE |
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STROBE |
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STROBE open when not used. |
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VCC+ |
14 |
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Positive supply |
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VCC± |
1 |
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Negative supply |
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POST OFFICE BOX 655303 •DALLAS, TEXAS 75265 |
LT1030C
QUADRUPLE LOW-POWER LINE DRIVER
SLLS048F ± APRIL 1989 ± REVISED APRIL 1998
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)²
Supply voltage range, VCC+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . 0 V to 15 |
V |
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Supply voltage range, VCC± . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . 0 V to ±15 V |
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Input voltage range, logic inputs, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . VCC± to 25 |
V |
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VI |
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Input voltage range at ON/OFF, |
. . . . . . . . . . . . . . 0 V to 12 |
V |
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Output voltage range, VO (any output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
VCC+ ± 30 V to VCC± + 30 |
V |
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Duration of output short circuit to ±30 V at (or below) 25°C (see Note 2) . . . . . . . |
. . . . . . . . . . . . . . . . Unlimited |
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Package thermal impedance, θJA (see Note 3): D package . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . 127°C/W |
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N package . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . . 78°C/W |
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Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . . . . . . . . . ±65°C to 150°C |
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Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . . . 260°C |
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²Stresses beyond those listed under ªabsolute maximum ratingsº may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ªrecommended operating conditionsº is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to GND.
2.The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation rating is not exceeded.
3.The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero.
recommended operating conditions
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MIN |
MAX |
UNIT |
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Supply voltage, VCC+ |
5 |
15 |
V |
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Supply voltage, VCC± |
±5 |
±15 |
V |
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High-level input voltage, VIH (see Note 4) |
2 |
15 |
V |
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Low-level input voltage, VIL (see Note 4) |
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0.8 |
V |
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Operating free-air temperature, TA |
0 |
70 |
°C |
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NOTE 4: These VIH and VIL specifications apply only for inputs IN1±IN4. For operating levels for ON/OFF, see Figure 2.
electrical characteristics over operating free-air temperature range, VCC± = ±5 V to ±15 V (unless otherwise noted)
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PARAMETER |
TEST CONDITIONS |
MIN |
TYP³ |
MAX |
UNIT |
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VOM+ |
Maximum positive peak output voltage swing |
IO = ±2 mA, |
TA = 25°C |
VCC+±0.3 |
VCC+±0.1 |
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V |
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VOM± |
Maximum negative peak output voltage swing |
IO = 2 mA, |
TA = 25°C |
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VCC±+0.9 |
VCC±+1.4 |
V |
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IIH |
High-level input current |
VI ≥ 2 V, |
TA = 25°C |
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2 |
20 |
μA |
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IIL |
Low-level input current |
VI ≤ 0.8 V, |
TA = 25°C |
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±10 |
±20 |
μA |
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II |
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VI = 0 |
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±0.1 |
±10 |
μA |
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Input current, ON/OFF |
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VI = 5 V |
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30 |
65 |
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IO |
Output current |
TA = 25°C |
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5 |
12 |
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mA |
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IOZ |
Off-state output current |
VO = ±15 V, TA = 25°C, |
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±2 |
±100 |
μA |
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ON/OFF at 0.4 V |
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ICC |
Supply current (all outputs low) |
VI ≥ at 2.4 V, |
IO = 0 |
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500 |
1000 |
μA |
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10 |
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ICC(off) |
Off-state supply current |
ON/OFF |
at 0.4 V |
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μA |
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ON/OFF at 0.1 V |
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10 |
150 |
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³ All typical values are at VCC± = ±12 V, TA = 25°C.
POST OFFICE BOX 655303 •DALLAS, TEXAS 75265 |
3 |
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