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LTC1338IG#PBF

Description
IC TXRX 5/3 RS232 FULL 28SOIC
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size195KB,8 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC1338IG#PBF Overview

IC TXRX 5/3 RS232 FULL 28SOIC

LTC1338IG#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP,
Contacts28
Manufacturer packaging codeG
Reach Compliance Codecompliant
ECCN codeEAR99
Other features3 RECEIVERS ACTIVE UNDER SHUTDOWN; EXTERNAL CHARGE PUMP; TRISTATABLE RECEIVERS
Differential outputNO
Number of drives5
Input propertiesSCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-232
JESD-30 codeR-PDSO-G28
JESD-609 codee3
length10.2 mm
Humidity sensitivity level1
Number of functions1
Number of terminals28
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Output characteristics3-STATE
Output polarityINVERTED
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum receive delay800 ns
Number of receiver bits3
Maximum seat height2 mm
Maximum slew rate2 mA
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
maximum transmission delay3500 ns
width5.3 mm
LTC1338
5V Low Power RS232
5-Driver/3-Receiver Transceiver
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
s
Low Supply Current: 500µA
0.2µA Supply Current in SHUTDOWN
50µA Supply Current in RECEIVER ALIVE Mode
ESD Protection Over
±10kV
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
Flowthrough Architecture
The LTC1338 is a 5-driver/ 3-receiver RS232 trans-
ceiver with very low supply current. In the no load
condition, the supply current is only 500µA. The charge
pump only requires four 0.1µF capacitors.
In SHUTDOWN mode, the supply current is further
reduced to 0.2µA. In RECEIVER ALIVE mode, all three
receivers are kept alive and the supply current is 50µA.
All RS232 outputs assume a high impedance state in
SHUTDOWN and with the power off.
The LTC1338 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver can
operate up to 120k baud with a 2500pF, 3kΩ load. Both
driver outputs and receiver inputs can be forced to
±25V
without damage, and can survive multiple
±10kV
ESD strikes.
APPLICATI
s
s
s
s
S
Battery-Powered Modems
Battery-Powered DCE
Notebook Computers
Palmtop Computers
TYPICAL APPLICATI
V
+
C1
0.1µF
C2
0.1µF
DRIVER 1 OUT
DRIVER 2 OUT
RX1 IN
DRIVER 3 OUT
RX2 IN
DRIVER 4 OUT
RX3 IN
DRIVER 5 OUT
RX ENABLE
NC
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
5-Drivers/3-Receivers with SHUTDOWN
28
LTC1338
27
26
25
24
23
22
21
20
19
18
17
16
15
C3
0.1µF
DRIVER 1 IN
DRIVER 2 IN
RX1 OUT
DRIVER 3 IN
RX2 OUT
DRIVER 4 IN
RX3 OUT
DRIVER 5 IN
GND
DRIVER ENABLE
NC
LTC1338 • TA01
V
C4
0.1µF
1200
1000
QUIESCENT CURRENT (µA)
800
600
400
200
0
–40
SHUTDOWN
CURRENT
QUIESCENT
CURRENT
–20
TEST CONDITION:
V
CC
= 5V, ALL DRIVER INPUTS TIED TO V
CC
.
U
Supply Current
1.2
1.0
SHUTDOWN CURRENT (µA)
UO
UO
0.8
0.6
0.4
0.2
0
100
0
20
40
60
TEMPERATURE (°C)
80
LTC1338 • TA02
1
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