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LTC1337_1

Description
5V Low Power RS232 3-Driver/5-Receiver Transceiver
File Size122KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC1337_1 Overview

5V Low Power RS232 3-Driver/5-Receiver Transceiver

LTC1337
5V Low Power RS232
3-Driver/5-Receiver Transceiver
FEATURES
DESCRIPTIO
Low Supply Current: 300µA
ESD Protection: Over
±10kV
1µA Supply Current in Shutdown
Operates from a Single 5V Supply
Uses Small Capacitors: 0.1µF
Operates to 120k Baud
Three-State Outputs Are High Impedance When Off
Output Overvoltage Does Not Force Current Back into
Supplies
RS232 I/O Lines Can Be Forced to
±25V
without
Damage
Pin Compatible with LT
®
1137A and LT1237
Flowthrough Architecture
The LTC
®
1337 is a 3-driver/5-receiver RS232 transceiver
with very low supply current. In the no load condition, the
supply current is only 300µA. The charge pump only
requires four 0.1µF capacitors and can supply up to 12mA
of extra current to power external circuitry.
In Shutdown mode, the supply current is further reduced
to 1µA. All RS232 outputs assume a high impedance state
in Shutdown and with the power off.
The LTC1337 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver can
operate up to 120k baud with a 1000pF// 3kΩ load. Both
driver outputs and receiver inputs can be forced to
±25V
without damage, and can survive multiple
±10kV
ESD
strikes.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
Notebook Computers
Palmtop Computers
TYPICAL APPLICATIO
V
+
C1
0.1µF
C2
0.1µF
DRIVER 1 OUT
RX1 IN
DRIVER 2 OUT
RX2 IN
RX3 IN
RX4 IN
DRIVER 3 OUT
RX5 IN
ON/OFF
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LTC1337
3-Drivers/5-Receivers with Shutdown
27
26
25
24
23
22
21
20
19
18
17
16
15
1337 TA01
C3
0.1µF
DRIVER 1 IN
RX1 OUT
DRIVER 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DRIVER 3 IN
RX5 OUT
GND
C4
0.1µF
QUIESCENT CURRENT OPERATING (µA)
28
V
600
500
400
300
200
100
0
SHUTDOWN
CURRENT
–20
TEST CONDITION:
V
CC
= 5V, ALL DRIVER INPUTS TIED TO V
CC
1337 TA02
U
Supply Current
1.2
1.0
SHUTDOWN CURRENT (µA)
0.8
0.6
0.4
0.2
0
QUIESCENT
CURRENT
0
20
40
60
TEMPERATURE (°C)
80
1337fa
U
U
1

LTC1337_1 Related Products

LTC1337_1 LTC1337CG LTC1337CNW LTC1337CSW
Description 5V Low Power RS232 3-Driver/5-Receiver Transceiver 5V Low Power RS232 3-Driver/5-Receiver Transceiver 5V Low Power RS232 3-Driver/5-Receiver Transceiver 5V Low Power RS232 3-Driver/5-Receiver Transceiver
Brand Name - Linear Technology Linear Technology Linear Technology
Is it Rohs certified? - incompatible incompatible incompatible
Parts packaging code - SSOP DIP SOIC
package instruction - SSOP, SSOP28,.3 DIP, DIP28,.6 SOP, SOP28,.4
Contacts - 28 28 28
Manufacturer packaging code - G NW SW
Reach Compliance Code - _compli _compli _compli
ECCN code - EAR99 EAR99 EAR99
Is Samacsys - N N N
Other features - EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP EXTERNAL CHARGE PUMP
Differential output - NO NO NO
Number of drives - 3 3 3
High level input current maximum value - 0.000005 A 0.000005 A 0.000005 A
Input properties - SCHMITT TRIGGER SCHMITT TRIGGER SCHMITT TRIGGER
Interface integrated circuit type - LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards - EIA-232 EIA-232 EIA-232
JESD-30 code - R-PDSO-G28 R-PDIP-T28 R-PDSO-G28
JESD-609 code - e0 e0 e0
Humidity sensitivity level - 1 1 1
Number of functions - 3 3 3
Number of terminals - 28 28 28
Maximum operating temperature - 70 °C 70 °C 70 °C
Minimum output swing - 10 V 10 V 10 V
Maximum output low current - 0.0016 A 0.0016 A 0.0016 A
Package body material - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code - SSOP DIP SOP
Encapsulate equivalent code - SSOP28,.3 DIP28,.6 SOP28,.4
Package shape - RECTANGULAR RECTANGULAR RECTANGULAR
Package form - SMALL OUTLINE, SHRINK PITCH IN-LINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) - 235 255 235
power supply - 5 V 5 V 5 V
Certification status - Not Qualified Not Qualified Not Qualified
Maximum receive delay - 600 ns 600 ns 600 ns
Number of receiver bits - 5 5 5
Maximum seat height - 2 mm 4.318 mm 2.65 mm
Maximum slew rate - 0.5 mA 0.5 mA 0.5 mA
Nominal supply voltage - 5 V 5 V 5 V
surface mount - YES NO YES
technology - CMOS CMOS CMOS
Temperature level - COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface - Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form - GULL WING THROUGH-HOLE GULL WING
Terminal pitch - 0.65 mm 2.54 mm 1.27 mm
Terminal location - DUAL DUAL DUAL
Maximum time at peak reflow temperature - 20 40 20
maximum transmission delay - 3000 ns 3000 ns 3000 ns
width - 5.3 mm 15.24 mm 7.5 mm
Base Number Matches - 1 1 1
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