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LTC1344CG

Description
Software-Selectable Cable Terminator
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size191KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric View All

LTC1344CG Overview

Software-Selectable Cable Terminator

LTC1344CG Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSSOP
package instructionSSOP, SSOP24,.3
Contacts24
Manufacturer packaging codeG
Reach Compliance Code_compli
ECCN codeEAR99
Is SamacsysN
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
Encapsulate equivalent codeSSOP24,.3
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)235
power supply+-5 V
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)
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