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LTC1344CG

Description
RS-232 Interface IC LTC1344 - Software Selectable Cable Terminator
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size190KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC1344CG Overview

RS-232 Interface IC LTC1344 - Software Selectable Cable Terminator

LTC1344CG Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
package instruction0.209 INCH, PLASTIC, SSOP-24
Reach Compliance Codecompliant
ECCN codeEAR99
Differential outputYES
Interface integrated circuit typeOTHER TERMINATOR
JESD-30 codeR-PDSO-G24
JESD-609 codee0
length8.2 mm
Humidity sensitivity level1
Nominal negative supply voltage-5 V
Number of functions1
Number of signal lines6
Number of terminals24
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
Nominal pull-up resistor104 Ω
Certification statusNot Qualified
Maximum seat height2 mm
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width5.3 mm
Base Number Matches1
LTC1344
Software-Selectable
Cable Terminator
FEATURES
s
DESCRIPTIO
s
Software-Selectable Cable Termination for:
RS232 (V.28)
RS423 (V.10)
RS422 (V.11)
RS485
RS449
EIA530
EIA530-A
V.35
V.36
X.21
Outputs Won’t Load the Line with Power Off
The LTC
®
1344 features six software-selectable
multiprotocol cable terminators. Each terminator can be
configured as an RS422 (V.11) 100Ω minimum differen-
tial load, V.35 T-network load or an open circuit for use
with RS232 (V.28) or RS423 (V.10) transceivers that
provide their own termination. When combined with the
LTC1343, the LTC1344 forms a complete software-select-
able multiprotocol serial port. A data bus latch feature
allows sharing of the select lines between multiple inter-
face ports.
The LTC1344 is available in a 24-lead SSOP.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
Data Networking
CSU and DSU
Data Routers
TYPICAL APPLICATION
CTS
DSR
DCD
DTR
RTS
RL
TM
RXD
RXC
TXC
SCTE
TXD
LL
Daisy-Chained Control Outputs
LTC1343
D4
R4
R3
R2
R1
D3
D2
D1
R4
R3
R2
R1
LTC1343
D4
D3
D2
D1
13 5
22 6
10 8
23 20 19
4
21
1
7
25
16 3
9
17 12 15
11 24 14 2
DB-25 CONNECTOR
U
LTC1344
18
U
U
DSR B
DSR A (107)
RL A (140)
CTS B
CTS A (106)
DTR B
DTR A (108)
RTS B
RTS A (105)
SHIELD (101)
SGND (102)
TM A (142)
RXD B
RXD A (104)
RXC B
RXC A (115)
DCD B
DCD A (109)
SCTE B
SCTE A (113)
TXD B
TXD A (103)
LL A (141)
TXC B
TXC A (114)
1344 TA01
1

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Is it Rohs certified? incompatible incompatible incompatible conform to incompatible conform to conform to
package instruction 0.209 INCH, PLASTIC, SSOP-24 0.209 INCH, PLASTIC, SSOP-24 PLASTIC, SSOP-24 SSOP, 0.209 INCH, PLASTIC, SSOP-24 SSOP, SSOP,
Reach Compliance Code compliant compliant compliant compliant compliant compliant compliant
Differential output YES YES YES YES YES YES YES
Interface integrated circuit type OTHER TERMINATOR OTHER TERMINATOR OTHER TERMINATOR OTHER TERMINATOR OTHER TERMINATOR OTHER TERMINATOR OTHER TERMINATOR
JESD-30 code R-PDSO-G24 R-PDSO-G24 R-PDSO-G24 R-PDSO-G24 R-PDSO-G24 R-PDSO-G24 R-PDSO-G24
JESD-609 code e0 e0 e0 e3 e0 e3 e3
length 8.2 mm 8.2 mm 8.2 mm 8.2 mm 8.2 mm 8.2 mm 8.2 mm
Humidity sensitivity level 1 1 1 1 1 1 1
Nominal negative supply voltage -5 V -5 V -5 V -5 V -5 V -5 V -5 V
Number of functions 1 1 1 1 1 1 1
Number of signal lines 6 6 6 6 6 6 6
Number of terminals 24 24 24 24 24 24 24
Maximum operating temperature 70 °C 85 °C 70 °C 85 °C 85 °C 85 °C 70 °C
Minimum operating temperature - -40 °C - -40 °C -40 °C -40 °C -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP SSOP SSOP SSOP SSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 235 235 235 260 235 260 260
Nominal pull-up resistor 104 Ω 104 Ω 104 Ω 104 Ω 104 Ω 104 Ω 104 Ω
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 2 mm 2 mm 2 mm 2 mm 2 mm 2 mm 2 mm
Maximum supply voltage 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V 5.25 V
Minimum supply voltage 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V 4.75 V
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V 5 V
surface mount YES YES YES YES YES YES YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Tin/Lead (Sn/Pb) MATTE TIN Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.65 mm 0.65 mm 0.65 mm 0.65 mm 0.65 mm 0.65 mm 0.65 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 20 20 20 30 20 30 30
width 5.3 mm 5.3 mm 5.3 mm 5.3 mm 5.3 mm 5.3 mm 5.3 mm
Base Number Matches 1 1 1 1 1 1 1
ECCN code EAR99 EAR99 EAR99 - EAR99 - -
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