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LTC1348CG

Description
Triple Transmitter Quint Receiver RS-232 28-Pin SSOP
File Size205KB,8 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC1348CG Overview

Triple Transmitter Quint Receiver RS-232 28-Pin SSOP

LTC1348CG Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
FunctionLine Transceiver
Data Rate250KBd
Transmitter Communication TypeRS-232
Receiver Communication TypeRS-232
Interface StandardsEIA-562|RS-232
Data Transmission TopologyPoint-to-Point
Number of Transceivers1
Number of Transmitters3
Number of Receivers5
Transmitter Signal TypeSingle-Ended
Receiver Signal TypeSingle-Ended
Number of Drivers per Line1
Number of Receivers per Line1
Driving Mode3-State
Number of Transmitter Enables1
Number of Receiver Enables1
Minimum Operating Temperature (°C)0
Maximum Operating Temperature (°C)70
Power Supply TypeSingle
Minimum Single Supply Voltage (V)3
Typical Single Supply Voltage (V)3.3|5
Maximum Single Supply Voltage (V)5.5
Maximum Supply Current (mA)2.5
Supplier Temperature GradeCommercial
Pin Count28
Supplier PackageSSOP
Standard Package NameSOP
MountingSurface Mount
Package Height2(Max) - 0.05(Min)
Package Length10.5(Max)
Package Width5.6(Max)
PCB changed28
Lead ShapeGull-wing
LTC1348
3.3V/5V Low Power RS232
3-Driver/5-Receiver Transceiver
FEATURES
s
s
s
s
s
s
s
s
DESCRIPTIO
s
s
Low Supply Current: 600µA at 3.3V
Supply Current in Shutdown: 0.2µA
Supply Current in Receiver Alive Mode: 15µA
ESD Protection over
±10kV
Operates from a Single 3V to 5.5V Supply
Operates to 120kBaud with 0.1µF Flying Capacitors
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 LTC
®
1348 is a 3-driver/5-receiver RS232 transceiver
with very low supply current. The charge pump only
requires five 0.1µF capacitors. The LTC1348 provides full
RS232 output levels when operated over a wide supply
range of 3V to 5.5V
The transceiver operates in one of four modes: Normal,
Receiver Disable, Receiver Alive and Shutdown. In Normal
or Receiver Disable mode, I
CC
is only 600µA at 3.3V and
800µA at 5V in the no load condition. In Shutdown mode,
the supply current is further reduced to 0.2µA. In Receiver
Alive mode, all five receivers are kept alive and the supply
current is 15µA. All RS232 outputs assume a high imped-
ance state in Shutdown or Receiver Alive mode or with the
power off. The receiver outputs assume a high impedance
state in Receiver Disable or with the power off.
The LTC1348 is fully compliant with all data rate and
overvoltage RS232 specifications. The transceiver oper-
ates up to 120kbaud with all drivers loaded with 1000pF,
3kΩ. 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.
APPLICATI
s
s
s
s
S
Notebook Computers
Palmtop Computers
Printers
Portable Instruments
TYPICAL APPLICATI
V
+
C5
0.1µF
C2
0.1µF
V
CC
C1
0.1µF
DR 1 OUT
RX1 IN
DR 2 OUT
RX2 IN
RX3 IN
RX4 IN
DR 3 OUT
RX5 IN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LTC1348
3-Drivers/5-Receivers with Shutdown
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C3
0.1µF
DR 1 IN
RX1 OUT
DR 2 IN
RX2 OUT
RX3 OUT
RX4 OUT
DR 3 IN
RX5 OUT
DREN
RXEN
GND
LT1348 • TA01
V
C4
0.1µF
SUPPLY CURRENT (mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–40
–20
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 3.3V
OR 5V
SHUTDOWN
CURRENT
QUIESCENT
CURRENT
U
Supply Current
1.6
1.4
SHUTDOWN CURRENT (µA)
UO
UO
1.2
1.0
0.8
0.6
0.4
0.2
0
40
20
TEMPERATURE (˚C)
0
60
80
LT1348 •TA02
1

LTC1348CG Related Products

LTC1348CG LTC1348CG#PBF LTC1348CG#TRPBF
Description Triple Transmitter Quint Receiver RS-232 28-Pin SSOP Triple Transmitter Quint Receiver RS-232 28-Pin SSOP Tube Triple Transmitter Quint Receiver RS-232 28-Pin SSOP T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99
Part Status Unconfirmed Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01
Function Line Transceiver Line Transceiver Line Transceiver
Data Rate 250KBd 250KBd 250KBd
Transmitter Communication Type RS-232 RS-232 RS-232
Receiver Communication Type RS-232 RS-232 RS-232
Interface Standards EIA-562|RS-232 EIA-562|RS-232 EIA-562|RS-232
Data Transmission Topology Point-to-Point Point-to-Point Point-to-Point
Number of Transceivers 1 1 1
Number of Transmitters 3 3 3
Number of Receivers 5 5 5
Transmitter Signal Type Single-Ended Single-Ended Single-Ended
Receiver Signal Type Single-Ended Single-Ended Single-Ended
Number of Drivers per Line 1 1 1
Number of Receivers per Line 1 1 1
Driving Mode 3-State 3-State 3-State
Number of Transmitter Enables 1 1 1
Number of Receiver Enables 1 1 1
Maximum Operating Temperature (°C) 70 70 70
Power Supply Type Single Single Single
Minimum Single Supply Voltage (V) 3 3 3
Typical Single Supply Voltage (V) 3.3|5 5|3.3 5|3.3
Maximum Single Supply Voltage (V) 5.5 5.5 5.5
Maximum Supply Current (mA) 2.5 2.5 2.5
Supplier Temperature Grade Commercial Commercial Commercial
Pin Count 28 28 28
Supplier Package SSOP SSOP SSOP
Standard Package Name SOP SOP SOP
Mounting Surface Mount Surface Mount Surface Mount
Package Height 2(Max) - 0.05(Min) 2(Max) - 0.05(Min) 2(Max) - 0.05(Min)
Package Length 10.5(Max) 10.5(Max) 10.5(Max)
Package Width 5.6(Max) 5.6(Max) 5.6(Max)
PCB changed 28 28 28
Lead Shape Gull-wing Gull-wing Gull-wing
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