How it Works
Datasheet
Loading...
LT1039-16

Datasheet LT1039-16, LT1039 Datasheet (Linear Technology)

Download
FEATURES
LT1039/LT1039-16
RS232 Driver/Receiver
with Shutdown
U
DESCRIPTIO
■
Operates from ±5V to ±15V Supplies
■
Fully Protected Against Overload
■
Outputs Can Be Driven ±30V Without Damage
■
Three-State Outputs; Outputs Open When Off
■
Bipolar Circuit—No Latchup
■
±30V Input Range
■
Triple Driver/Receiver
■
No Supply Current in Shutdown
■
30kΩ Input Impedance
■
Meets All RS232 Specifications
■
16-Pin Version—Pin Compatible with MC145406
■
Available in SO Package
■
15kV ESD: LT1039A
U
APPLICATIO S
■
RS232 Interface
■
Terminals
■
Modems
The LT®1039 is a triple RS232 driver/receiver that in-
cludes shutdown. Each receiver will accept up to ±30V
and can be shorted to ground or up to ±30V without
damage to the drivers. Additionally, when the system is shut down or power is off, the outputs are in a high impedance state allowing data line sharing. Bipolar cir­cuitry makes this driver/receiver exceptionally rugged against overloads or ESD damage.
A BIAS pin allows one receiver to be kept on while the rest of the part is shut down.
The LT1039 is also available in the 16-pin version, without shutdown or BIAS pin functions.
For applications requiring operation from a single 5V supply, see the LT1080A/LT1081A, LT1180A/LT1181A and LT1130A data sheets. For applications requiring 15kV ESD, see the LT1039A.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
1
12V
2
BIAS*
–12V
3
4
5
6
7
8
9
*BIAS PIN USED TO KEEP THE RECEIVER ON WHILE IN SHUTDOWN
RS232 IN
RS232 OUT
RS232 IN
RS232 OUT
RS232 IN
RS232 OUT
U
+
V
LT1039
30k
30k
30k
–
V
V
CC
GND
1039 TA01
18
5V
17
ON/OFF
16
LOGIC
15
LOGIC
14
LOGIC
13
LOGIC
12
LOGIC
11
LOGIC
10
+
V
–0.5
1.5
1.0
OUTPUT VOLTAGE (V)
0.5
–
V
Driver Output Swing
NEGATIVE
2
0
OUTPUT CURRENT (mA)
4
POSITIVE
6
8
10
1039 TA02
1
LT1039/LT1039-16
WW
W
ABSOLUTE MAXIMUM RATINGS
U
(Note 1)
Supply Voltage
Driver (V+, V
–
) ................................................. ±16V
Receiver (VCC) ...................................................... 7V
Logic Inputs .................................................. V– to 25V
Receiver Inputs..................................................... ±30V
ON/OFF Input .............................................. GND to 12V
Driver Outputs ....................... (V– + 30V) to (V+ – 30V)
U
W
U
PACKAGE/ORDER INFORMATION
ORDER PART
NUMBER
LT1039CN16 LT1039CSW16 LT1039MJ16
+
1
V
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
2
3
4
5
6
7
–
8
V
J PACKAGE
16-LEAD CERDIP
16-LEAD PLASTIC SO WIDE
T
= 150°C, θJA = 100°C/ W (J)
JMAX
T
= 150°C, θJA = 140°C/ W (N)
JMAX
= 150°C, θJA = 150°C/ W (SW)
T
JMAX
TOP VIEW
SW PACKAGE
V
16
CC
REC1 OUT
15
TR1 IN
14
REC2 OUT
13
TR2 IN
12
REC3 OUT
11
TR3 IN
10
GND
9
N PACKAGE
16-LEAD PDIP
Short-Circuit Duration ..................................... Indefinite
Operating Temperature Range
LT1039C .................................................. 0°C to 70°C
LT1039I ............................................. – 40°C to 85°C
LT1039M ......................................... – 55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
+
1
V
2
BIAS
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
3
4
5
6
7
8
–
9
V
J PACKAGE
18-LEAD CERDIP
18-LEAD PLASTIC SO WIDE
T
= 150°C, θJA = 100°C/ W(J)
JMAX
= 150°C, θJA = 120°C/ W(N)
T
JMAX
T
= 150°C, θJA = 120°C/ W(SW)
JMAX
TOP VIEW
SW PACKAGE
V
18
CC
ON/OFF
17
REC1 OUT
16
TR1 IN
15
REC2 OUT
14
TR2 IN
13
REC3 OUT
12
TR3 IN
11
GND
10
N PACKAGE
18-LEAD PDIP
ORDER PART
NUMBER
LT1039CJ LT1039CN LT1039CSW LT1039IN LT1039ISW LT1039MJ
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Driver V+ = 12V, V– = –12V, V
Output Voltage Swing Load = 3k to Ground
Logic Input Voltage Levels Input Low Level (V
Logic Input Current V
Output Short-Circuit Current Sourcing Current, V
Output Leakage Current Shutdown (Notes 3, 4), V
Supply Leakage Current Shutdown (Note 3) ● 1 (25°C) 100 µA
Slew Rate RL = 3k, C
Supply Current V
= 2.5V (Note 2)
ON/OFF
Positive Negative
= High) ● 1.4 0.8 V
OUT
Input High Level (V
≥ 2.0V 1 20 µA
IN
≤ 0.8V 5 20 µA
V
IN
Sinking Current, V
= 51pF 4 15 30 V/µs
L
= Low 4 8 mA
OUT
= Low) ● 2.0 1.4 V
OUT
= 0V 5 15 mA
OUT
= 0V –5 – 15 mA
OUT
= ±18V, VIN = 0V ● 10 (25°C) 200 µA
OUT
+
● V
– 0.4 V+ – 0.1 V
–
● V
+ 1.5 V– + 1.0 V
2
LT1039/LT1039-16
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Receiver VCC = 5V, V
Input Voltage Thresholds Input Low Level (V
Hysteresis ● 0.1 0.4 1.0 V Input Resistance ● 30 kΩ
Output Voltage Output Low, I
Output Short-Circuit Current Sourcing Current, V
Output Leakage Current Shutdown (Note 2), 0V ≤ V Supply Current ● 47mA Supply Leakage Current Shutdown (Note 3) ● 1 (25°C) 100 µA ON/OFF Pin Current 0V ≤ V
= 2.5V (Note 2)
ON/OFF
Input High Level (V
= –1.6mA ● 0.4 0.5 V
Output High, I
OUT
= 160µA ● 3.5 4.8 V
OUT
Sinking Current, V
≤ 5V ● –15 80 µA
ON/OFF
= High) ● 0.5 1.3 V
OUT
= Low) ● 1.7 2.8 V
OUT
= 0V (Note 5) ● 0.5 1 mA
OUT
OUT
= V
CC
OUT
≤ V
, V
= 0V ● 110µA
CC
IN
● –10 mA
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device by be impaired.
Note 2: V Note 3: V
100°C ≤ T
= 5V for LT1039M grade devices.
ON/OFF
= 0.4V for – 55°C ≤ TA ≤ 100°C and V
ON/OFF
≤ 125°C. Does not apply to LT1039-16 part.
A
W
U
ON/OFF
= 0.2V for
Note 4: For T Note 5: For T
TYPICAL PERFORMANCE CHARACTERISTICS
Driver Output Short-Circuit Current ON/OFF Pin ThresholdsReceiver Input Thresholds
50
45
40
35
30
25
20
15
OUTPUT CURRENT (mA)
10
5
0
–55
0
–25
TEMPERATURE (°C)
SOURCING
SINKING
25
50
75
100
125
1039 G01
3.00
2.75
2.50
2.25
2.00
1.75
1.50
INPUT VOLTAGE (V)
1.25
1.00
0.75
0.50 –55
–25
INPUT HIGH
INPUT LOW
50
25
0
TEMPERATURE (°C)
75
≥ 100°C, leakage current is 350µA max.
A
≤ –25°C, output source current is 0.4mA.
A
5.0
4.5
4.0
3.5
3.0
2.5
100
1039 G02
125
2.0
1.5
ON/OFF PIN VOLTAGE (V)
1.0
0.5
0
–55
–25
MINIMUM ON VOLTAGE
MINIMUM OFF VOLTAGE
25
0
TEMPERATURE (°C)
50
75
100
125
1039 G03
3
LT1039/LT1039-16
TEMPERATURE (°C)
–55 –25
OUTPUT CURRENT (mA)
1
10
100
0 25 50 75 100 125
1039 G06
0.1
OUTPUT SINKING
OUTPUT SOURCING
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current in Shutdown
1000
SUPPLY CURRENT MEASURED INTO V
100
10
SUPPLY CURRENT (nA)
1
–55 –25
+
AND V
CC
0 25 50 75 100 125
TEMPERATURE (°C)
ON/OFF Pin Current vs Voltage Driver Output Swing vs Current
40
35
30
25
20
15
10
5
INPUT CURRENT (µA)
0
–5
–10
0
1039 G04
2
1
INPUT VOLTAGE (V)
Driver Output Leakage in Shutdown
1000
100
V
OUT
10
OUTPUT LEAKAGE CURRENT (µA)
1
–55 –25
3
4
1039 G07
0 25 50 75 100 125
TEMPERATURE (°C)
5
–30V
V
OUT
30V
1039 G05
+
V
–0.2
–0.4
1.2
1.0
0.8
0.6
0.4
0.2
–
OUTPUT VOLTAGE REFERRED TO SUPPLIES (V)
V
1.0
1.5
0.5 4.5
0
OUTPUT CURRENT (mA)
Receiver Output Short-Circuit Current
OUTPUT HIGH
OUTPUT LOW
3.0
2.5
3.5
2.0
4.0
5.0
1039 G08
4
RECEIVER
OUTPUT
DRIVER
OUTPUT
INPUT
Output Waveforms Shutdown to Driver Output
5V 0V
10V
0V
–10V
5V 0V
V+ = 12V
–
= –12V
V V
= 5V
CC
= 3k
R
L
DRIVER OUTPUT CONNECTED TO RECEIVER INPUT
2µs/DIV
OUTPUT
OUTPUT
1039 G09
DRIVER
DRIVER
ON/OFF
INPUT
10V
–5V
–10V
5V
0V
0V
5V
0V
V+ = 12V
–
V
= –12V = 3k
R
L
1ms/DIV
1039 G10
OUTPUT HIGH
OUTPUT LOW
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown to Receiver Output BIAS Pin Response Time
LT1039/LT1039-16
6V
OUTPUT
ON/OFF
INPUT
4V
2V
0V
5V
0V
VCC = 5V
1ms/DIV
1039 G11
RECEIVER
UUU
PIN FUNCTIONS
V+, V– (Pins 1, 9): Driver Supply Pins. Supply current drops to zero in shutdown mode. Driver outputs are in a high impedance state when V+ and V– = 0V.
BIAS (Pin 2): Keeps receiver 1 on while the LT1039 is in the shutdown mode. Leave BIAS pin open when not in use. See Applications Information for proper use.
REC IN (Pins 3, 5, 7): Receiver Input Pins. Accepts RS232
voltage levels (±30V) and has 0.4V of hysteresis to pro­vide noise immunity. Input impedance is nominally 30kΩ.
(Pin numbers listed are for 18-pin device)
6V
OUTPUT
4V
2V
0V
5V
0V
VCC = 5V
0.2µs/DIV
1039 G12
RECEIVER 1
BIAS INPUT
(THRU 25kΩ)
GND (Pin 10): Ground Pin.
TR IN (Pins 11, 13, 15): RS232 Driver Input Pins. Inputs
are TTL/CMOS compatible. Inputs should not be allowed to float. Tie unused inputs to VCC.
REC OUT (Pins 12, 14, 16): Receiver Outputs with TTL/ CMOS Voltage Levels. Outputs are in a high impedance state when in the shutdown mode to allow data line sharing. Outputs are fully short-circuit protected to ground or VCC with power on, off or in the shutdown mode.
TR OUT (Pins 4, 6, 8): Driver Outputs with RS232 Voltage Levels. Outputs are in a high impedance state when in the shutdown mode or when power is off (V+ and V– = 0V) to allow data line sharing. Outputs are fully short-circuit protected from V– + 30V to V+ – 30V with power on, off or in the shutdown mode. Typical output breakdowns are
greater than ±45V and higher applied voltages will not
damage the device if moderately current limited.
ON/OFF (Pin 17): Controls the operation mode of the LT1039 and is TTL/CMOS compatible. A logic low puts the device in the shutdown mode which reduces input supply current to zero and places both driver and receiver outputs in a high impedance state.
VCC (Pin 18): 5V Power for Receivers.
5
LT1039/LT1039-16
LT1039 #1 RECEIVER
RS232
INPUT A
RS232
INPUT B
1039 AI04
ON/OFF
(CHANNEL SELECT)
INPUT
LOGIC
INVERTER
LOGIC OUTPUT
LT1039 #2 RECEIVER
U
WUU
APPLICATIONS INFORMATION
The driver output stage of the LT1039 offers significantly improved protection over older bipolar and CMOS de­signs. In addition to current limiting, the driver output
can be externally forced to ±30V with no damage or
excessive current flow, and will not disrupt the supplies.
LT1039 Driver
30V
LT1039
OUTPUT CAN
BE FORCED
EXTERNALLY
Some drivers have diodes connected between the out­puts and the supplies, so externally applied voltages can cause excessive supply voltage to develop
Older RS232 Drivers and Other CMOS Drivers
–30V
1039 AI01
Sharing a Receiver Line
Transceiver
+
V
WITH SOME DRIVERS, EXTERNALLY APPLIED VOLTAGE CAN FORCE THE SUPPLIES
–
V
1039 AI02
Placing the LT1039 in the shutdown mode (Pin 17 low) puts both the driver and receiver outputs in a high imped­ance state. This allows data line sharing and transceiver applications.
Sharing a Transmitter Line
LOGIC
INPUT A
LOGIC
INPUT B
LT1039 #1
DRIVER
LT1039 #2
DRIVER
RS232 TRANSMISSION LINE
TRANSMIT/RECEIVE
LOGIC
LINE
ON/OFF
(TRANSMIT/RECEIVE)
INPUT
LT1039 #1
DRIVER
LT1039 #2 RECEIVER
LOGIC
INVERTER
1039 AI05
RS232 TRANSMIT/RECEIVE LINE
The shutdown mode also drops all supply currents (VCC, V+, V–) to zero for power conscious systems.
6
ON/OFF
(CHANNEL SELECT)
INPUT
LOGIC
INVERTER
1039 AI03
LT1039/LT1039-16
U
WUU
APPLICATIONS INFORMATION
When driving CMOS logic from a receiver that will be used in the shutdown mode and there is no other active receiver on the line, a 51k resistor can be placed from the logic input to VCC to force a definite logic level when the receiver output is in a high impedance state.
Driving CMOS Logic from a Receiver
V
CC
CMOS
51k*
IS LOW
LOGIC
LOGIC OUTPUT
1039A AI06
RS232
INPUT
ON/OFF
INPUT
LT1039
RECEIVER
*FORCES LOGIC INPUT STATE WHEN V
ON/OFF
To protect against receiver input overloads in excess of
±30V, a voltage clamp can be placed on the data line and
still maintain RS232 compatibility.
Driver inputs should not be allowed to float. Any unused inputs should be tied to VCC.
The BIAS pin is used to “keep alive” one receiver while in the shutdown mode (all other circuitry being inactive). This allows a system to be in shutdown and still have one active receiver for transferring data.
Keeping Alive One Receiver While in Shutdown
LOGIC
SHUTDOWN
ON/OFF
1039 AI09
INPUT
17
LOGIC OUTPUT
25k
2
BIAS
316
RS232
INPUT
LT1039
Input Overvoltage Protection
RS232
INPUT
1k
30V
5.6k
30V
RECEIVER
30k
LOGIC OUTPUT
1039 AI07
The receiver input impedance of the LT1039 is nominally
30kΩ. For applications requiring a 5kΩ input impedance,
a 5.6k resistor can be connected from the receiver input to ground.
5kΩ Impedance Matching
RS232
INPUT
5.6k
RECEIVER
30k
LOGIC OUTPUT
1039 AI08
It can also be used to make an RS232 compatible shut­down control line. Driving the BIAS pin low through a resistance of 24k to 30k keeps the receiver active. Do not drive the BIAS pin directly from a logic output without the series resistor. An unused BIAS pin should be left open.
RS232 Compatible Shutdown Control Line
25k
ON/OFF
1039A AI10
17
RS232
SHUTDOWN
INPUT
2
BIAS
316
LT1039
7
LT1039/LT1039-16
PACKAGE DESCRIPTION
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
0.300 BSC
(0.762 BSC)
OPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
J Package
16-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
0.840
0.005
(0.127)
MIN
0.025
(0.635)
RAD TYP
0.015 – 0.060
(0.380 – 1.520)
16
2345
1
(21.336)
MAX
13
11121415
6
10
9
78
0.220 – 0.310
(5.588 – 7.874)
0.200
(5.080)
MAX
0.008 – 0.018
(0.203 – 0.457)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS
0° – 15°
18-Lead CERDIP (Narrow 0.300, Hermetic)
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
(0.762 BSC)
0.300 BSC
OPTION
0.125
(3.175)
MIN
J Package
(LTC DWG # 05-08-1110)
0.005
(0.127)
MIN
0.025
(0.635)
RAD TYP
0.015 – 0.060
(0.380 – 1.520)
17
18
2
1
0.045 – 0.068
(1.143 – 1.727)
0.014 – 0.026
(0.360 – 0.660)
16
3
4
0.960
(24.384)
MAX
1415
56
13
11
12
78
0.100 ± 0.010
(2.540 ± 0.254)
J16 1197
10
0.220 – 0.310
(5.590 – 7.870)
9
0.200
(5.080)
MAX
8
0.008 – 0.018
(0.203 – 0.457)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS
0° – 15°
0.125
(3.175)
MIN
0.045 – 0.068
(1.143 – 1.727)
0.014 – 0.026
(0.360 – 0.660)
0.100 ± 0.010
(2.540 ± 0.254)
J18 1197
PACKAGE DESCRIPTION
LT1039/LT1039-16
U
Dimensions in inches (millimeters) unless otherwise noted.
N Package
16-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.770*
(19.558)
MAX
910
8
7
0.255 ± 0.015* (6.477 ± 0.381)
14
15
16
2
1
3
12
13
4
11
6
5
0.300 – 0.325
(7.620 – 8.255)
0.009 – 0.015
(0.229 – 0.381)
+0.035
0.325 –0.015
+0.889
8.255
()
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.020
(0.508)
MIN
0.130 ± 0.005
(3.302 ± 0.127)
0.125
(3.175)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
N Package
18-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
18
0.255 ± 0.015* (6.477 ± 0.381)
16
0.045 – 0.065
(1.143 – 1.651)
0.900* (22.860)
MAX
1517
121314
0.065
(1.651)
TYP
0.018 ± 0.003
(0.457 ± 0.076)
N16 1197
1011
12
0.300 – 0.325
(7.620 – 8.255)
0.009 – 0.015
(0.229 – 0.381)
+0.035
0.325 –0.015
+0.889
8.255
()
–0.381
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
0.020
(0.508)
MIN
0.130 ± 0.005
(3.302 ± 0.127)
0.125
(3.175)
MIN
0.005
(0.127)
MIN
0.100 ± 0.010
(2.540 ± 0.254)
3
0.045 – 0.065
(1.143 – 1.651)
4
56
9
8
7
0.065
(1.651)
TYP
0.018 ± 0.003
(0.457 ± 0.076)
N18 1197
9
LT1039/LT1039-16
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.398 – 0.413*
(10.109 – 10.490)
15 14
16
12
13
10 9
11
NOTE 1
2345
0.050
(1.270)
TYP
1
0.014 – 0.019
(0.356 – 0.482)
TYP
0.291 – 0.299** (7.391 – 7.595)
0.010 – 0.029
(0.254 – 0.737)
0.009 – 0.013
(0.229 – 0.330)
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
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
*
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
**
NOTE 1
× 45°
0.016 – 0.050
(0.406 – 1.270)
° – 8° TYP
0
0.093 – 0.104
(2.362 – 2.642)
6
78
0.037 – 0.045
(0.940 – 1.143)
0.394 – 0.419
(10.007 – 10.643)
0.004 – 0.012
(0.102 – 0.305)
S16 (WIDE) 0396
10
PACKAGE DESCRIPTION
LT1039/LT1039-16
U
Dimensions in inches (millimeters) unless otherwise noted.
SW Package
18-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.447 – 0.463*
(11.354 – 11.760)
14 13
15
16
1718
11
12
10
SEE NOTE
0.291 – 0.299**
(7.391 – 7.595)
° – 8° TYP
0.093 – 0.104
(2.362 – 2.642)
0.010 – 0.029
(0.254 – 0.737)
0.009 – 0.013
(0.229 – 0.330)
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
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
*
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
**
NOTE 1
×
°
45
0.016 – 0.050
(0.406 – 1.270)
0
0.050
(1.270)
TYP
2345
1
0.014 – 0.019
(0.356 – 0.482)
TYP
6
78
(10.007 – 10.643)
9
0.037 – 0.045
(0.940 – 1.143)
0.004 – 0.012
(0.102 – 0.305)
0.394 – 0.419
S18 (WIDE) 0396
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 represen­tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
LT1039/LT1039-16
TYPICAL APPLICATION
LT1080A (Driver/Receiver with Power Supply) Driving an LT1039
U
SHUTDOWN
TTL OUT
TTL OUT
1µF
1µF
18 17
ON/OFF
TTL IN
TTL IN
2
+
C1
+
4
–
C1
5
+
C2
+
6
–
C2
LT1080A
GND
16
5V
V
CC
RS232 OUT
RS232 OUT
RS232 IN
5k
RS232 IN
5k
3
+
V
7
–
V
+
1µF
TTL OUT
TTL OUT
18 17
V
TTL IN
TTL IN
TTL IN
TTLOUT
1
V
9
V
1µF
+
CC
+
–
ON/OFF
LT1039
RS232 OUT
RS232 OUT
RS232 OUT
RS232 IN
30k
RS232 IN
30k
RS232 IN
30k
GND
10
1039 TA03
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC®485 Low Power RS485 Transceiver Industry Standard
LT1039A/LT1039A-16 Triple RS232 Driver/Receiver with Shutdown ±15kV ESD Protection LT1137A 5V 3-Driver/5-Receiver RS232 Transceiver ±15kV ESD Protection LT1180A/LT1181A 5V 2-Driver/2-Receiver RS232 Transceiver Industry Standard, 0.1µF Capacitors LTC1345 V.35 Transceiver Single 5V Supply Using 0.1µF Capacitors
LTC1348 3.3V 3-Driver/5-Receiver RS232 Transceiver Operates from 3.3V to 5V Supplies, 5 Receivers Active in Shutdown
1039fc LT/TP 0599 2K REV C • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1991
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507
●
www.linear-tech.com
Loading...
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use