LT1039AC ................................................ 0°C to 70°C
LT1039AM
(OBSOLETE)
................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
pin conFiguraTion
TOP VIEW
V
+
TOP VIEW
V
+
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
V
–
1
2
3
4
5
6
7
8
16 V
CC
15 REC1 OUT
14 TR1 IN
13 REC2 OUT
12 TR2 IN
11 REC3 OUT
10 TR3 IN
9
GND
BIAS
REC1 IN
TR1 OUT
REC2 IN
TR2 OUT
REC3 IN
TR3 OUT
V
–
1
2
3
4
5
6
7
8
9
18 V
CC
17 ON/OFF
16 REC1 OUT
15 TR1 IN
14 REC2 OUT
13 TR2 IN
12 REC3 OUT
11 TR3 IN
10 GND
N PACKAGE
SW PACKAGE
16-LEAD PDIP
16-LEAD PLASTIC SO
T
JMAX
= 125°C,
q
JA
= 90°C/W,
q
JC
= 50°C/W (N)
T
JMAX
= 125°C,
q
JA
= 95°C/W,
q
JC
= 27°C/W (SW)
N PACKAGE
SW PACKAGE
18-LEAD PDIP
18-LEAD PLASTIC SO
T
JMAX
= 125°C,
q
JA
= 79°C/W,
q
JC
= 36°C/W (N)
T
JMAX
= 125°C,
q
JA
= 90°C/W,
q
JC
= 26°C/W (SW)
J PACKAGE
18-LEAD CERDIP
T
JMAX
= 150°C,
q
JA
= 88°C/W,
q
JC
= 22°C/W (J)
Consider the N Package for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature ranges.
OBSOLETE PACKAGE
orDer inForMaTion
LEAD FREE FINISH
LT1039ACSW16#PBF
LT1039ACSW#PBF
LT1039ACN16#PBF
LT1039ACN#PBF
LT1039AMJ#PBF
TAPE AND REEL
LT1039ACSW16#TRPBF
LT1039ACSW #TRPBF
N/A
N/A
LT1039AMJ#TRPBF
PART MARKING*
LT1039ACSW16
LT1039ACSW
LT1039ACN16
LT1039ACN
PACKAGE DESCRIPTION
16-Lead Plastic SO (Wide)
18-Lead Plastic SO (Wide)
16-Lead Plastic PDIP
18-Lead Plastic PDIP
18-Lead CERDIP
TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
–55°C to 125°C
OBSOLETE PACKAGE
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
2
1039afb
For more information
www.linear.com/1039
LT1039A/LT1039A-16
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
PARAMETER
Output Voltage Swing
CONDITIONS
Load = 3k to Ground
Positive
Negative
Input Low Level (V
OUT
= High)
Input High Level (V
OUT
= Low)
V
IN
≥ 2.0V
V
IN
≥ 0.8V
Sourcing Current, V
OUT
= 0V
Sinking Current, V
OUT
= 0V
Shutdown (Notes 3, 4), V
OUT
= ±18V, V
IN
= 0V
Shutdown (Note 3)
R
L
= 3k, C
L
= 51pF to 2500pF
V
OUT
= Low
l
l
elecTrical characTerisTics
MIN
TYP
MAX
UNITS
Driver V
+
= 12V, V
–
= –12V, V
ON/OFF
= 2.5V (Note 2)
l
l
l
l
V
+
– 2.0 V
+
– 1.3
V
–
+ 1.5 V
–
+ 1.0
2.0
1.4
1.4
1
5
20
–15
30
–30
10
1
4
15
1
0.6
0.8
200
100
30
5
1.2
1.2
0.8
20
20
V
V
V
V
µA
µA
mA
mA
µA
µA
V/µs
mA
µs
µs
V
V
V
kΩ
0.5
V
V
mA
mA
10
5
100
80
600
600
µA
mA
µA
µA
ns
ns
Logic Input Voltage Levels
Logic Input Current
Output Short-Circuit Current
Output Leakage Current
Supply Leakage Current
Slew Rate
Supply Current
Prop Delay (t
PLH
)
(t
PHL
)
Receiver V
CC
= 5V, V
ON/OFF
= 2.5V (Note 2)
Input Voltage Thresholds
Hysteresis
Input Resistance
Output Voltage
Output Short-Circuit Current
Output Leakage Current
Supply Current
Supply Leakage Current
ON/OFF Pin Current
Prop Delay (t
PLH
)
(t
PHL
)
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
V
ON/OFF
= 5V for LT1039AM grade devices.
Output Low, I
OUT
= –1.6mA
Output High, I
OUT
= 160µA
Sourcing Current, V
OUT
= V
CC
Sinking Current, V
OUT
= 0V
Shutdown (Note 2), 0V ≤ V
OUT
≤ V
CC
, V
IN
= 0V
(Note 5)
Shutdown (Note 3)
0V ≤ V
ON/OFF
≤ 5V
Input Low Level (V
OUT
= High)
Input High Level (V
OUT
= Low)
l
l
l
l
l
l
l
l
l
l
l
l
0.5
0.1
1.3
1.7
0.4
30
0.4
4.8
–30
25
1
2
1
2.8
1.0
3.5
–10
15
–15
200
300
Note 3:
V
ON/OFF
= 0.4V for –55°C ≤ T
A
≤ 100°C and V
ON/OFF
= 0.2V for
100°C ≤ T
A
≤ 125°C. Does not apply to LT1039A-16 part.
Note 4:
For T
A
≥ 100°C leakage current is 350µA max.
Note 5:
Bias pin open on 18-pin version.
1039afb
For more information
www.linear.com/1039
3
LT1039A/LT1039A-16
Typical perForMance characTerisTics
Driver Output Short-Circuit Current
50
45
40
OUTPUT CURRENT (mA)
35
30
25
20
15
10
5
0
–55 –25
50
25
0
75
TEMPERATURE (°C)
100
125
SOURCING
SINKING
3.00
2.75
ON/OFF PIN VOLTAGE (V)
2.50
INPUT VOLTAGE (V)
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
–55 –25
50
25
0
75
TEMPERATURE (°C)
100
125
INPUT LOW
INPUT HIGH
Receiver Input Thresholds
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
ON/OFF Pin Thresholds
MINIMUM ON VOLTAGE
MINIMUM OFF VOLTAGE
50
25
0
75
TEMPERATURE (°C)
100
125
0
–55 –25
1039A G01
1039A G02
1039A G03
Supply Current in Shutdown
1000
OUTPUT LEAKAGE CURRENT (µA)
SUPPLY CURRENT MEASURED
INTO V
CC
AND V
+
1000
Driver Output Leakage
in Shutdown
60
55
50
100
OUTPUT CURRENT (mA)
45
40
35
30
25
20
15
10
5
125
Receiver Output
Short-Circuit Current
SUPPLY CURRENT (nA)
SINKING
100
10
10
V
OUT
– 30V
SOURCING
V
OUT
30V
1
–55 –25
0
25
50
75
TEMPERATURE (°C)
100
1
–55 –25
0
25
50
75
TEMPERATURE (°C)
100
125
0
–55 –25
50
25
0
75
TEMPERATURE (°C)
100
125
1039A G04
1039A G05
1039A G06
ON/OFF Pin Current vs Voltage
OUTPUT VOLTAGE REFERRED TO SUPPLIES (V)
40
35
30
INPUT CURRENT (µA)
25
20
15
10
5
0
–5
–10
0
1
2
3
INPUT VOLTAGE (V)
4
5
1039A G07
V
+
Driver Output Swing vs Current
RECEIVER
OUTPUT
DRIVER
OUTPUT
INPUT
5V
0V
10V
0V
–10V
5V
0V
Output Waveforms
– 0.4
– 0.8
–1.2
–1.6
– 2.0
1.2
0.8
0.4
V
–
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
OUTPUT CURRENT (mA)
1039A G08
V
+
= 12V
V
–
= –12V
V
CC
= 5V
R
L
= 3k
2µs/DIV
1039A G09
DRIVER OUTPUT CONNECTED TO RECEIVER INPUT
4
1039afb
For more information
www.linear.com/1039
LT1039A/LT1039A-16
Typical perForMance characTerisTics
Shutdown to Driver Output
10V
RECEIVER
5V
OUTPUT
0V
0V
DRIVER
OUTPUT –5V
–10V
ON/OFF 5V
INPUT
0V
OUTPUT
HIGH
6V
RECEIVER 4V
OUTPUT 2V
0V
ON/OFF 5V
INPUT 0V
V
+
= 12V
V
–
= –12V
R
L
= 3k
2µs/DIV
1039A G10
Shutdown to Receiver Output
6V
RECEIVER 1
4V
OUTPUT
2V
BIAS INPUT
(THRU 25k )
0V
5V
0V
V
CC
= 5V
2ms/DIV
1039A G11
BIAS Pin Response Time
OUTPUT
LOW
V
CC
= 5V
0.2µs/DIV
1039A G12
pin FuncTions
(Pin numbers listed are for 18-pin device)
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 LT1309A 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. Receiver input pins are internally protected from
ESD transients. In order to insure proper functioning of
the ESD protection devices, the V
CC
and V
–
supply pins
must be bypassed with low ESR capacitors located close
to the pins. A 0.1µF ceramic capacitor works well.
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. Driver-
output pins are internally protected from ESD transients.
In order to insure proper functioning of the ESD protec-
tion devices, the V
+
and V
–
supply pins must be bypassed
with low ESR capacitors located close to thepins. 0.1µF
ceramic capacitors work well.
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 V
CC
.
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 shar-
ing. Outputs are fully short-circuit protected to ground or
V
CC
with power on, off or in the shutdown mode.
ON/OFF (Pin 17):
Controls the operation mode of the
LT1039A 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
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Embedded System
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