LT1032CN [Linear]
Quad Low Power Line Driver; 四路低功耗线路驱动器
| 型号： | LT1032CN |
| 厂家： | 
Linear |
| 描述： | Quad Low Power Line Driver |
| 文件： | 总8页 (文件大小：188K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1032
Quad Low Power
Line Driver
U
FEATURES
DESCRIPTIO
The LT®1032 is a RS232 and RS423 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
fullyprotectedfromexternallyappliedvoltagesof±30Vby
bothcurrentandthermallimiting. Sincetheoutputswings
to within 200mV of the positive supply and 600mV of the
negative supply, power supply needs are minimized.
■
Low Operating Voltage: ±5V to ±15V
■
500µA Supply Current
■
Zero Supply Current when Shut Down
Outputs Can Be Driven ±30V
Thermal Limiting
Output “Open” when Off (Three-State)
10mA Output Drive
Pinout Similar to 1488
■
■
■
■
■
Also included is a strobe pin to force all outputs low
independent of input or shutdown conditions. Further,
slew rate can be adjusted with a resistor connected to the
supply.
U
APPLICATIO S
■
RS232
■
Power Supply Inverter
A major advantage of the LT1032 is the high impedance
output state when off or powered down.
■
Micropower Interface
Level Translator
■
For applications requiring dual or triple RS232 driver/
receiverdevices,seetheLT1180A(dual),LT1039A(triple)
or the LT1130A data sheets.
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
TYPICAL APPLICATIO
Output Swing vs Output Current
RS232 Line Driver
+
V
1
2
3
4
5
6
7
14
13
12
11
10
9
LT1032
–6V
INPUT
6V
0.2
V
HIGH
LOW
STROBE*
INPUT
OUTPUT
RESPONSE TIME
CONTROL*
OUT
0.4
OUTPUT
ON/OFF
(0V TO 5V)†
INPUT
OUTPUT
GND
1.0
0.8
0.6
0.4
0.2
V
OUT
INPUT
8
OUTPUT
*NO CONNECTION NEEDED WHEN NOT USED
†5V = ON
LT1032 • TA01
–
V
0
2
4
6
8
10
OUTPUT CURRENT (mA)
LT1032 • TA02
1
LT1032
W W W
U
(Note 1)
ABSOLUTE AXI U RATI GS
Supply Voltage ..................................................... ±15V
Logic Input Pins ............................................ V– to 25V
ON/OFF Pin ................................................. GND to 15V
Output (Forced) ............................. V– + 30V, V+ – 30V
Response Pin ......................................................... ±6V
Short-Circuit Duration (to ±30V) .................... Indefinite
Storage Temperature Range ................ –65°C to 150°C
Operating Temperature Range
LT1032C............................................... 0°C to 70°C
LT1032I........................................... –40°C to 85°C
LT1032M....................................... –55°C to 125°C
C Grade Guaranteed
Functional by Design .............................. –25°C to 85°C
Lead Temperature (Soldering, 10 sec)................. 300°C
W
U
/O
PACKAGE RDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
TOP VIEW
V
V
CC
EE
NUMBER
1
2
3
4
5
6
7
14
13
12
11
10
9
NUMBER
V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
(–15V TO –5V)
(5V TO 15V)
EE
CC
STROBE
STROBE
LT1032CJ
LT1032CN
LT1032IN
LT1032MJ
LT1032CSW
LT1032ISW
ON/OFF
(0V TO 5V)
ON/OFF
RESPONSE
CONTROL
RESPONSE
CONTROL
8
GND
GND
NC
NC
N PACKAGE
14-LEAD PDIP
J PACKAGE
14-LEAD CERDIP
SW PACKAGE
16-LEAD PLASTIC SO (WIDE)
TJMAX = 85°C, θJA = 100°C/W, θJC = 60°C (CJ)
TJMAX = 85°C, θJA = 100°C/W, θJC = 60°C (CN)
TJMAX = 150°C, θJA = 100°C/W, θJC = 60°C (MJ)
T
JMAX = 85°C, θJA = 80°C/W
The ● denotes specifications which apply over the full operating temperature
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at TA = 25°C. Supply voltage = ±5V to ±15V
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Current
Power Supply Leakage Current
V
V
V
≥ 2.4V, I
≤ 0.4V
≤ 0.1V, T = 125°C
= 0, All Outputs Low
OUT
●
●
500
1
10
1000
10
50
µA
µA
µA
V
V
ON/OFF
ON/OFF
ON/OFF
A
+
+
–
Output Voltage Swing
Load = 2mA Positive
Negative
V – 0.3V
V – 0.1V
V + 0.7V
–
V + 0.9V
Output Current (Active)
V
= ±5V to ±15V
10
22
mA
SUPPLY
Output Current (Shutdown)
V
V
= 0V, V
= ±30V
OUT
2
2
100
100
µA
µA
SUPPLY
SUPPLY
OUT
= ±15V, V
= ±20V
+
–
Output Overload Voltage (Forced)
Input Overload Voltage (Forced)
Logic Input Levels
Operating or Shutdown
Operating of Shutdown
Low Input (V
High Input (V
●
●
V – 30V
V + 30V
30V
0.8
V
V
V
V
–
V
= High)
= Low)
●
●
1.4
1.4
OUT
OUT
2
Logic Input Current
V
V
> 2.0V
< 0.8V
2
10
20
20
µA
µA
IN
IN
ON/OFF Pin Current
Slew Rate
0 ≤ V ≤ 5V
●
–10
4
3
15
50
30
µA
V/µs
IN
I
= 0, R = 3k
RESPONSE
L
Change in Slew Rate (Note 3)
I
I
= 50µA
= –50µA
50
–50
%
%
RESPONSE
RESPONSE
Response Pin Leakage
V
V
= ±6V, V
RESPONSE
≤ 0.4V
1
µA
SUPPLY
ON/OFF
= ±6V
Note 3: Response can be changed by connecting a resistor to the supply.
For supplies less than ±6V this current is disconnected when shut down.
Leave open when not used.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: 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.
2
LT1032
U W
TYPICAL PERFOR A CE CHARACTERISTICS
On Supply Current
vs Temperature
Supply Current
Off Supply Current
vs Temperature
vs Supply Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
1000
100
10
3.0
2.5
2.0
1.5
V
= ±12V
S
ALL OUTPUTS HIGH
ALL OUTPUTS HIGH
1.0
0.5
0
ALL OUTPUTS LOW
ALL OUTPUTS LOW
1
5
10
12.5
25
50
75
100
125
7.5
15
50
TEMPERATURE (˚C)
100 125
–50 –25
0
25
75
SUPPLY VOLTAGE (±V)
TEMPERATURE (°C)
LT1032 • TPC02
LT1032 • TPC03
LT1032 • TPC01
Response Pin Leakage
vs Temperature (Device Off)
Output Swing vs Output Current
Output Leakage vs Temperature
+
100µA
1000
100
10
V
0.2
0.4
V
HIGH
OUT
10µA
1µA
1.0
0.8
0.6
0.4
0.2
V
OUT
LOW
V
= –30V
OUT
100nA
10nA
V = 5V
V = –5V
V
= 30V
OUT
75
–
1nA
1
V
25
50
100
125
25
50
75
100
0
2
4
6
8
10
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
LT1032 • TPC05
LT1032 • G06
LT1032 • TA02
Shutdown Pin Voltage
vs Temperature
Current Limit vs Temperature
ON/OFF Pin Current vs Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
10
8
80
70
60
50
40
30
20
10
0
MIN ON VOLTAGE
6
4
SINKING
2
0
MAX OFF VOLTAGE
SOURCING
–2
–4
–6
–50
50
100 125
150
–25
0
25
75
0
1
2
3
4
5
–55 –25
0
25
50 75
TEMPERATURE (°C)
100 125 150
TEMPERATURE (°C)
INPUT VOLTAGE (V)
LT1032 • TPC08
LT1032 • TPC07
LT1032 • TPC09
3
LT1032
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Output Swing vs Temperature
Slew Rate vs Temperature
+
20
18
16
14
12
10
8
V
I
I
= 2mA
200
400
OUT
RISING
= 10mA
OUT
FALLING
I
I
= –10mA
= –2mA
OUT
OUT
1
800
600
400
200
6
V
= ±12V
= 3k
S
4
R
L
L
C
V
= 51pF
2
= ±8V
SLEW
–
0
V
125
100
–50
–25
0
25
50
75 100 125
–50
50
–25
0
25
75
150
TEMPERATURE (°C)
TEMPERATURE (°C)
LT1032 • TPC11
LT1032 • TPC10
ON/OFF Response Time
ON/OFF Response Time
5V/DIV
10V
RL = 3k
VS = ±6V
L = 51pF
RL = 3k
S = ±12V
CL = 51pF
6V
4V
V
C
VOUT
VIN = 0V
VIN = 0V
OUTPUT HIGH
OUTPUT HIGH
OUTPUT LOW
VOUT
5V
0
2V
0
0
–5V
–10V
0
–2V
VOUT
VIN = 5V
VIN = 5V
VOUT
OUTPUT LOW
INPUT
–4V
–6V
5V
5V
0
ON/OFF
INPUT
ON/OFF
INPUT
0
0
200µs 400µs
1ms
0
200µs 400µs
1ms
600µs
600µs
LT1032 • TPC13
LT1032 • TPC12
Output Waveform
Output Waveform
RL = 450Ω
VS = ±5V
CL = 51pF
RL = 3k
L = 51pF
50V
C
VOUT
4V
2V
0
–5V
VOUT
0
–2V
–4V
10V
0
–10V
VS = ±12V
VOUT
5V
0
5V
0
LOGIC
INPUT
LOGIC
INPUT
2µs
4µs
8µs
10µs
0
4µs
8µs
20µs
0
6µs
16µs
12µs
LT1032 • TPC14
LT1032 • TPC15
Output Waveform Driving
Capacitive Load
Strobe Pin Response
6V
RL = 3.3k
4V
2V
0
VS = ±6V
5V/DIV
0
CL = 0.01µF
VOUT
OUTPUT
–2V
–4V
–6V
VIN = 0V
RL = 3k
VS = ±12V
5V
0
5V
0
STROBE
INPUT
LOGIC
INPUT
C
L = 51pF
2µs
4µs
8µs
0
6µs
10µs
20µs
40µs
50µs
0
30µs
LT1032 • TPC17
LT1032 • TPC16
4
LT1032
U
O
U
U
PI
FU CTI
S
VEE(J,N&S:Pin1):MinusSupply.Operates–2Vto–15V.
GND (J, N & S: Pin 7): Ground. Ground must be more
positive than V–.
Response Control (J & N: Pin 10/S: Pin 12): Allows
limited change of slew rate. Leave open when not used.
Strobe (J & N: Pin 13/ S: Pin 15): Forces all outputs low.
Drive with 3V.
VCC (J&N:Pin14/S:Pin15):PositiveSupply.Operates5V
to 15V.
(J & N: Pins 2, 5, 9, 12/S: Pins 2, 5, 11, 14): Logic
Input.OperatesproperlyonTTLorCMOSlevels.Output
–
valid form (V + 2V) ≤ V ≤ 15V. Connect to ground
IN
when not used.
(J & N: Pins 3, 6, 8, 11/S: Pins 3, 6, 10, 13):Output. Line
drive output.
ON/OFF (J, N & S: Pin 4): Shuts down entire circuit.
Cannot be left open. For “normally on” operation, connect
to V+.
O U
W
U
PPLICATI
S I FOR ATIO
A
Application Hints
The response pin can be used to make some adjustment
in slew rate. A resistor can be connected between the re-
sponse pin and the power supplies to drive 50µA to 100µA
into the pin. The response pin is a low impedance point
operatingatabout0.75Vaboveground.Forsupplyvoltage
up to ±6V, current is turned off when the device is turned
off. For higher supply voltages, a Zener should be con-
nectedinserieswiththeresistortolimitthevoltageapplied
to the response pin to 6V. Also, for temperatures above
100°C, using the response pin is not recommended. The
leakagecurrentintotheresponsepinathightemperatures
is excessive.
The LT1032 is exceptionally easy to use when compared
to older drivers. Operating supply voltage can be as low as
±3Vorashighas±15V.Inputlevelsarereferredtoground.
ThelogicinputsareinternallysetatTTLlevels.Outputsare
valid for input voltages from 1V above V– to 25V. Driving
the logic inputs to V– turns off the output stage. The
ON/OFF control completely turns off all supply current of
the LT1032. The levels required to drive the device on or
off are set by internal emitter-based voltages. Since the
currentintotheON/OFFpinissolow, TTLorCMOSdrivers
have no problem controlling the device.
Outputs are well protected against shorts or externally
applied voltage. Tested limits are ±30V, but the device can
withstand external voltages up to breakdown of the tran-
sistors(typicallyabout50V).TheLT1032isusuallyimmune
to ESD up to 2500V on the outputs with no damage.
Thestrobepinisnotfullylogiccompatible.Theimpedance
ofthestrobepinisabout2kΩtoground.Drivingthestrobe
pinpositiveforcestheoutputstageslow–evenifthedevice
is shut off. Under worst case conditions, 3V minimum at
2mA are needed driving the strobe pin to insure strobing.
U
O
TYPICAL APPLICATI S
Protecting Against More Than ±30V Output Overload
+
V
100Ω TO
1000Ω
1/4 LT1032
INPUT
TO LINE
1/4 LT1032
INPUT
TO LINE
30V ZENERS
LT1032 • TA03b
–
V
LT1032 • TA03a
5
LT1032
U
O
TYPICAL APPLICATI S
FET Driver
Slew Rate Adjustment*
10V†
15V
5V
15V
50k
INCREASES
SLEW RATE
80k
80k
OR
50µA
INPUT
1/4 LT1032
–15V
LT1032
PIN 10
OR
LT1032 • TA04
DECREASES
SLEW RATE
50µA
120k
–5V
120k
–15V
10V†
LT1032 • TA05
TTL/CMOS Compatible Strobe
*ABOUT 4V/ms CHANGE
†ZENERS PREVENT LEAKAGE DURING SHUTDOWN
5V
Strobing with CMOS
TO LT1032
STROBE
TTL INPUT
10k
ANY CMOS
TO PIN 13
OF LT1032
TTL INPUT
GATE
LT1032 • TA06
LT1032 • TA07
Phase Shift Oscillator
R
R
R
R
1/4
LT1032CSW
1/4
LT1032CSW
1/4
LT1032CSW
2
3
5
6
9
8
1
f =
3.3RC
C
C
C
LT1032 • TA09
Operating from a Single 5V Supply
5V
1
12
7
14
4
V
V
CC
EE
1/4 LT1032CN
40k*
ON/OFF
15k*
11
CMOS
INPUT
OUTPUT
0.7V TO 4.8V
GND
LT1032 • TA10
1N4148
1N4148
*LEVEL SHIFTING RESISTORS
NEEDED FOR EACH INPUT
6
LT1032
W
W
SI PLIFIED SCHE ATIC
LOGIC INPUT
+
V
OUTPUT
R10
1 OF 4
DRIVERS
R9
2k
R13
2k
Q13
Q19
2k
Q37
Q9
Q25
Q32
Q33
R12
30k
R14
2k
Q8
Q14
Q24 Q26
Q23
R1
50k
Q7
R4
2k
Q29
C2
3pF
Q18
Q17
Q20
Q36
Q1
Q2
D3
D4
ON/OFF
Q3
Q6
Q12
Q39
Q27
Q28
R5
600Ω
Q11
Q15 Q16
D2
Q22
Q30
Q40
R18
5k
Q5
Q10
D1
Q34
Q4
R6
7.2k
R7
R8
R11
120Ω
Q21
R17
7.5k
21.5k 1k
C1
10pF
GND
Q31
2k
R16
3Ω
–
V
LT1032 • SS
RESPONSE
TIME ADJ
STROBE
U
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
J Package
14-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.785
(19.939)
0.200
(5.080)
MAX
0.005
(0.127)
MIN
MAX
0.300 BSC
(0.762 BSC)
14
13
12
11
10
9
8
0.015 – 0.060
(0.381 – 1.524)
0.220 – 0.310
0.025
(5.588 – 7.874)
(0.635)
RAD TYP
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
J14 1298
2
3
4
5
6
1
7
0.045 – 0.065
(1.143 – 1.651)
0.100
(2.54)
BSC
0.125
(3.175)
MIN
0.014 – 0.026
(0.360 – 0.660)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS
N Package
14-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
0.130 ± 0.005
(3.302 ± 0.127)
14
13
12
11
10
9
8
0.020
(0.508)
MIN
0.255 ± 0.015*
(6.477 ± 0.381)
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
+0.035
1
2
3
5
6
7
4
0.325
0.005
(0.125)
MIN
–0.015
0.125
(3.175)
MIN
0.018 ± 0.003
(0.457 ± 0.076)
N14 1098
+0.889
8.255
0.100
(2.54)
BSC
(
)
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
7
LT1032
U
TYPICAL APPLICATION
±5V to ±15V Voltage Multiplier
5V
14
LT1032
1N4148
2
5
3
470µF
1N4148
1N4148
+
V
OUT
6
13.7V AT NO LOAD
12V AT 10mA
+
470µF
470µF
f
= 1kHz
CLK
470µF
–V
OUT
9
8
5V
0V
–13.7V AT NO LOAD
–12V AT 10mA
+
+
12
11
1N4148
1
–5V
LT1032 • TA08
U
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.291 – 0.299**
(7.391 – 7.595)
0.398 – 0.413*
(10.109 – 10.490)
0.037 – 0.045
(0.940 – 1.143)
0.093 – 0.104
(2.362 – 2.642)
15 14
12
10
9
16
13
11
0.010 – 0.029
(0.254 – 0.737)
× 45°
0° – 8° TYP
0.050
(1.270)
BSC
0.394 – 0.419
(10.007 – 10.643)
NOTE 1
0.004 – 0.012
(0.102 – 0.305)
0.009 – 0.013
NOTE 1
(0.229 – 0.330)
0.014 – 0.019
0.016 – 0.050
(0.356 – 0.482)
TYP
(0.406 – 1.270)
NOTE:
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS
S16 (WIDE) 1098
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
2
3
5
7
8
1
4
6
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1039A
Triple RS232 Driver/Receiver with Shutdown
±15kV ESD Protection
LT1130A/LT1140A 5V Supply, Multiple RS232 Driver/Receiver
LT1780/LT1781A 5V Supply, 2 Driver/2 Receiver RS232
±15kV 3 Driver/5 Receiver (LT1137A)
±15kV Pin Compatible Upgrade to LT1080/LT1081 and LT1180A/LT1181A
1032fd LT/TP 0999 2K REV D • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
8
●
●
LINEAR TECHNOLOGY CORPORATION 1994
(408)432-1900 FAX:(408)434-0507 www.linear-tech.com
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