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LTC1484CMS8#PBF

Description
IC TXRX RS485 LOWPWR 8-MSOP
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size222KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC1484CMS8#PBF Overview

IC TXRX RS485 LOWPWR 8-MSOP

LTC1484CMS8#PBF 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 height1.1 mm
Maximum slew rate0.7 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
LTC1484
Low Power
RS485 Transceiver
with Receiver Fail-Safe
FEATURES
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
s
No Damage or Latchup to
±
15kV ESD (Human
Body Model), IEC-1000-4-2 Level 4 Contact (
±
8kV)
and Level 3 (
±
8kV) Air Gap Specifications
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 for Driver Enable with No 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
Power Up/Down Glitch-Free Driver Outputs
Up to 32 Transceivers on the Bus
Pin Compatible with the LTC485
Available in 8-Lead
MSOP,
PDIP and SO Packages
The LTC
®
1484 is a low power RS485 compatible trans-
ceiver. In receiver mode, it offers a fail-safe feature which
guarantees a high receiver output state when the inputs
are left open, shorted together or terminated with no
signal present. No external components are required to
ensure the high receiver output state.
Both driver and receiver feature three-state outputs with
separate receiver and driver control pins. The driver
outputs maintain high impedance over the entire com-
mon mode range when three-stated. Excessive power
dissipation caused by bus contention or faults is pre-
vented by a thermal shutdown circuit that forces the
driver outputs into a high impedance state.
Enhanced ESD protection allows the LTC1484 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 LTC1484 is fully specified over the commercial and
industrial temperature ranges and is available in 8-lead
MSOP, PDIP and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
TYPICAL APPLICATIO
RS485 Interface
LTC1484
RO1
RE1
DE1
D
DI1
GND1
GND2
1484 TA01
LTC1484
V
CC1
V
CC2
B2
120Ω
120Ω
A2
D
R
RO2
RE2
DE2
DI2
B1
A1
Dl1
R
B2
A2
RO2
Dl1
↑↓
Dl2 = 0
RE1 = RE2 = 0
U
Driving a 2000 Foot STP Cable
DE1 = V
CC
DE2 = 0
1484 TA01a
U
U
1

LTC1484CMS8#PBF Related Products

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Description IC TXRX RS485 LOWPWR 8-MSOP IC txrx rs485 LP failsafe 8soic IC txrx rs485 LP failsafe 8msop IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-SOIC IC TXRX RS485 LOWPWR 8-DIP IC TXRX RS485 LOWPWR 8-DIP IC TXRX RS485 LOWPWR 8-MSOP
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 MSOP SOIC SOIC SOIC SOIC DIP DIP MSOP
package instruction TSSOP, TSSOP8,.19 SOP, SOP8,.25 TSSOP, TSSOP8,.19 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 SOP, SOP8,.25 DIP, DIP8,.3 DIP, DIP8,.3 TSSOP, TSSOP8,.19
Contacts 8 8 8 8 8 8 8 8 8 8
Manufacturer packaging code MS8 S8 MS8 S8 S8 S8 S8 N N MS8
Reach Compliance Code compliant not_compliant not_compliant compliant compliant compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
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
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 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 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 EIA-422; EIA-485
JESD-30 code S-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDIP-T8 R-PDIP-T8 R-PDSO-G8
JESD-609 code e3 e0 e0 e3 e3 e3 e3 e3 e3 e3
Humidity sensitivity level 1 1 1 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8 8 8 8
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C 85 °C 70 °C 85 °C 70 °C 85 °C 70 °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 1.5 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 TSSOP SOP SOP SOP SOP DIP DIP TSSOP
Encapsulate equivalent code TSSOP8,.19 SOP8,.25 TSSOP8,.19 SOP8,.25 SOP8,.25 SOP8,.25 SOP8,.25 DIP8,.3 DIP8,.3 TSSOP8,.19
Package shape SQUARE RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE IN-LINE IN-LINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 260 255 235 250 250 260 260 NOT SPECIFIED NOT SPECIFIED 260
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 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns 200 ns
Number of receiver bits 1 1 1 1 1 1 1 1 1 1
Maximum seat height 1.1 mm 1.75 mm 1.17 mm 1.75 mm 1.75 mm 1.75 mm 1.75 mm 3.937 mm 3.937 mm 1.17 mm
Maximum slew rate 0.7 mA 0.9 mA 0.9 mA 0.9 mA 0.9 mA 0.7 mA 0.9 mA 0.7 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 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 4.75 V
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 YES YES YES NO NO YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL
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 GULL WING GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE GULL WING
Terminal pitch 0.65 mm 1.27 mm 0.65 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 2.54 mm 2.54 mm 0.65 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 40 20 NOT SPECIFIED NOT SPECIFIED 30 30 NOT SPECIFIED NOT SPECIFIED 30
maximum transmission delay 60 ns 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 3.9 mm 3.9 mm 3.9 mm 3.9 mm 7.62 mm 7.62 mm 3 mm
Base Number Matches 1 1 1 1 1 1 1 1 1 1
length 3 mm 4.9 mm 3 mm 4.9 mm 4.9 mm 4.9 mm 4.9 mm - - 3 mm
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