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LTC1482CMS8#TRPBF

Description
IC TXRX RS485 LOWPWR 8-MSOP
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size210KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC1482CMS8#TRPBF Overview

IC TXRX RS485 LOWPWR 8-MSOP

LTC1482CMS8#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
MakerLinear ( ADI )
Parts packaging codeMSOP
package instructionTSSOP, TSSOP8,.19
Contacts8
Manufacturer packaging codeMS8
Reach Compliance Codecompliant
ECCN codeEAR99
Differential outputYES
Number of drives1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeS-PDSO-G8
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Minimum output swing1.5 V
Maximum output low current0.004 A
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP8,.19
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
power supply5 V
Certification statusNot Qualified
Maximum receive delay200 ns
Number of receiver bits1
Maximum seat height1.17 mm
Maximum slew rate0.9 mA
Maximum supply voltage5.25 V
Minimum supply voltage4.75 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
maximum transmission delay60 ns
width3 mm
Base Number Matches1
LTC1482
Low Power RS485 Transceiver
with Carrier Detect and
Receiver Fail-Safe
DESCRIPTIO
The LTC
®
1482 is a low power RS485 compatible trans-
ceiver that offers an active low carrier detect output. The
open-drain carrier detect pin allows several transceivers
to share the same carrier detect line and can be used to
detect the insertion or removal of a driven RS485/RS422
cable.
Enhanced ESD protection allows the LTC1482 to with-
stand
±15kV
(human body model), IEC-1000-4-2 level 4
(±8kV) contact and level 3 (±8kV) air discharge ESD
without latchup or damage.
The LTC1482 receiver stays alive at all times except in
shutdown. The supply current is a maximum of 700µA
and 900µA when the driver is disabled and enabled
respectively. In shutdown, the quiescent current of the
LTC1482 drops to a maximum of 20µA.
When the driver is disabled or the LTC1482 is in shut-
down, the driver outputs are three-stated and remain in
a high impedance state over the RS485 common mode
range.
Excessive power dissipation caused by bus contention or
faults is prevented by a thermal shutdown circuit, which
forces the driver outputs into a high impedance state.
The LTC1482 is fully specified over the commercial and
industrial temperature ranges and is available in 8-lead
MSOP, PDIP and SO packages.
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
No Damage or Latchup to
±
15kV (Human Body
Model), IEC1000-4-2 Level 4 (
±
8kV) Contact and
Level 3 (
±
8kV) Air Discharge
Active Low Carrier Detect Output
Guaranteed High Receiver Output State for
Floating, Shorted or Terminated Inputs with
No Signal Present
Drives Low Cost Residential Telephone Wires
Low Power: I
CC
= 700µA Max with Driver Disabled
I
CC
= 900µA Max in Driver Mode Without Load
20µA Max Quiescent Current in Shutdown Mode
Single 5V Supply
– 7V to 12V Common Mode Range Permits
±7V
Ground Difference Between Devices on the Data Line
Maximum Data Rate of 4Mbps
Power Up/Down Glitch-Free Driver Outputs
Up to 32 Transceivers on the Bus
Available in 8-Lead
MSOP,
PDIP and SO Packages
APPLICATIO S
s
s
s
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
LTC1482
RO1
CD1
DE1
D
DI1/SHDN1
GND1
R
B1
A1
V
CC1
Carrier Detect Output (2000 Foot STP Cable)
RS485 Interface
DE1
LTC1482
V
CC2
B2
120Ω
120Ω
GND2
1482 TA01
RO2
R
CD2
DE2
D
DI2/SHDN2
CD2
A2
B2
A2
DE1
↑↓
DE2 = 0
1k PULL-UP AT CD
U
U
U
Dl1 = V
CC
Dl2 = V
CC
1482 TA01a
1

LTC1482CMS8#TRPBF Related Products

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Description IC TXRX RS485 LOWPWR 8-MSOP IC txrx rs485 det/failsafe 8soic IC txrx rs485 det/failsafe 8soic IC TXRX RS485 LOWPWR 8-MSOP IC TXRX RS485 LOWPWR 8-DIP IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-DIP IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-SOIC
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to incompatible incompatible conform to conform to conform to conform to conform to conform to conform to
Maker Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
Parts packaging code MSOP SOIC SOIC MSOP DIP SOIC DIP SOIC SOIC SOIC
Contacts 8 8 8 8 8 8 8 8 8 8
Manufacturer packaging code MS8 S8 S8 MS8 N S8 N S8 S8 S8
Reach Compliance Code compliant not_compliant not_compliant compliant compliant compliant compliant compliant compliant compliant
Differential output YES YES YES YES YES YES YES YES YES YES
Number of drives 1 1 1 1 1 1 1 1 1 1
JESD-30 code S-PDSO-G8 R-PDSO-G8 R-PDSO-G8 S-PDSO-G8 R-PDIP-T8 R-PDSO-G8 R-PDIP-T8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e0 e0 e3 e3 e3 e3 e3 e3 e3
Number of terminals 8 8 8 8 8 8 8 8 8 8
Maximum operating temperature 70 °C 85 °C 70 °C 70 °C 85 °C 85 °C 70 °C 70 °C 70 °C 85 °C
Minimum output swing 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.5 V 1.2 V
Maximum output low current 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A 0.004 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSSOP SOP SOP TSSOP DIP SOP DIP SOP SOP SOP
Encapsulate equivalent code TSSOP8,.19 SOP8,.25 SOP8,.25 TSSOP8,.19 DIP8,.3 SOP8,.25 DIP8,.3 SOP8,.25 SOP8,.25 SOP8,.25
Package shape SQUARE RECTANGULAR RECTANGULAR SQUARE RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
power supply 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum receive delay 200 ns 5000 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
surface mount YES YES YES YES NO YES NO YES YES YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL INDUSTRIAL COMMERCIAL COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING GULL WING GULL WING
Terminal pitch 0.65 mm 1.27 mm 1.27 mm 0.65 mm 2.54 mm 1.27 mm 2.54 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Base Number Matches 1 1 1 1 1 1 1 1 1 1
package instruction TSSOP, TSSOP8,.19 - SOP, SOP8,.25 TSSOP, TSSOP8,.19 DIP, DIP8,.3 SOP, SOP8,.25 DIP, DIP8,.3 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25
ECCN code EAR99 - EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Input properties DIFFERENTIAL SCHMITT TRIGGER - DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER DIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit type LINE TRANSCEIVER - LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-422; EIA-485 - EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485 EIA-422; EIA-485
length 3 mm - 4.9 mm 3 mm - 4.9025 mm - 4.9 mm 4.9 mm 4.9 mm
Humidity sensitivity level 1 - 1 1 1 1 1 1 1 1
Number of functions 1 - 1 1 1 1 1 1 1 1
Peak Reflow Temperature (Celsius) 260 - 235 260 NOT SPECIFIED 260 NOT SPECIFIED 250 260 260
Number of receiver bits 1 - 1 1 1 1 1 1 1 1
Maximum seat height 1.17 mm - 1.75 mm 1.1 mm 3.937 mm 1.752 mm 3.937 mm 1.75 mm 1.75 mm 1.75 mm
Maximum slew rate 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA -
Maximum supply voltage 5.25 V - 5.25 V 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 4.75 V 4.75 V
Maximum time at peak reflow temperature 30 - 20 30 NOT SPECIFIED 30 NOT SPECIFIED NOT SPECIFIED 30 30
maximum transmission delay 60 ns - 60 ns 60 ns 60 ns 60 ns 60 ns 60 ns 60 ns 60 ns
width 3 mm - 3.9 mm 3 mm 7.62 mm 3.899 mm 7.62 mm 3.9 mm 3.9 mm 3.9 mm
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