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LTC2850CDD#PBF

Description
IC txrx rs485/rs422 8-dfn
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size1MB,18 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
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LTC2850CDD#PBF Overview

IC txrx rs485/rs422 8-dfn

LTC2850CDD#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Parts packaging codeDFN
package instructionHVSON, SOLCC8,.11,20
Contacts8
Manufacturer packaging codeDD
Reach Compliance Codecompliant
ECCN codeEAR99
Differential outputYES
Number of drives1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-485-A; TIA-485-A; EIA-422
JESD-30 codeS-PDSO-N8
JESD-609 codee3
length3 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Minimum output swing2 V
Maximum output low current0.004 A
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeSOLCC8,.11,20
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Certification statusNot Qualified
Maximum receive delay70 ns
Number of receiver bits1
Maximum seat height0.8 mm
Maximum supply voltage3.6 V
Minimum supply voltage3 V
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formNO LEAD
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
maximum transmission delay50 ns
width3 mm
Base Number Matches1
LTC2850/LTC2851/LTC2852
3.3V 20Mbps RS485/RS422
Transceivers
FeaTures
n
n
n
n
DescripTion
The LTC
®
2850, LTC2851 and LTC2852 are low power,
20Mbps RS485/RS422 transceivers operating on 3.3V
supplies. The receiver has a one-eighth unit load supporting
up to 256 nodes per bus (C, I-grade), and a failsafe feature
that guarantees a high output state under conditions of
floating or shorted inputs.
The driver maintains a high output impedance over the
entire common mode range when disabled or when the
supply is removed. Excessive power dissipation caused by
bus contention or a fault is prevented by current limiting
all outputs and by thermal shutdown.
Enhanced ESD protection allows these parts to withstand
up to ±15kV (human body model) on the transceiver
interface pins without latchup or damage.
PART NUMBER
LTC2850
LTC2851
LTC2852
DUPLEX
Half
Full
Full
PACKAGE
SO-8, MSOP-8, DFN-8
SO-8, MSOP-8, DFN-8
SO-14, MSOP-10, DFN-10
n
n
n
n
n
n
n
n
3.3V Supply Voltage
20Mbps Maximum Data Rate
No Damage or Latchup Up to ±15kV HBM
High Input Impedance Supports 256 Nodes
(C, I‑Grade)
Operation Up to 125°C (H‑Grade)
Guaranteed Failsafe Receiver Operation Over the
Entire Common Mode Range
Current Limited Drivers and Thermal Shutdown
Delayed Micropower Shutdown: 5µA Maximum
(C, I-Grade)
Power Up/Down Glitch-Free Driver Outputs
Low Operating Current: 370µA Typical in
Receive Mode
Compatible with TIA/EIA-485-A Specifications
Available in 8-Pin and 10-Pin 3mm
×
3mm DFN,
8-Pin and 10-Pin MSOP and 8-Pin and 14-Pin
,
SO Packages
applicaTions
n
n
n
Low Power RS485/RS422 Transceiver
Level Translator
Backplane Transceiver
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion
LTC2850
RO1
RE1
DE1
DI1
D
GND1
2V/DIV
LTC2850
RO2
RE2
DE2
DI2
D
GND2
285012 TA01a
LTC2850 at 20Mbps Into 54Ω
V
CC1
R
T
DI
A
B
A-B
V
CC2
R
T
R
R
20ns/DIV
285012 TA01b
285012fd


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Description IC txrx rs485/rs422 8-dfn IC txrx rs485/rs422 10-dfn IC txrx rs485/rs422 10msop IC txrx rs485/rs422 8msop IC txrx rs485 20mbps 8-dfn IC txrx rs485/rs422 8soic IC txrx rs485/rs422 8msop IC txrx rs485/rs422 8-dfn
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
Is it Rohs certified? conform to conform to conform to conform to conform to conform to conform to conform to
Parts packaging code DFN DFN MSOP MSOP DFN SOIC MSOP DFN
package instruction HVSON, SOLCC8,.11,20 HVSON, SOLCC10,.11,20 TSSOP, TSSOP10,.19,20 TSSOP, TSSOP8,.19 HVSON, SOLCC8,.11,20 SOP, SOP8,.25 TSSOP, TSSOP8,.19 HVSON, SOLCC8,.11,20
Contacts 8 10 10 8 8 8 8 8
Manufacturer packaging code DD DD MS MS8 DD S8 MS8 DD
Reach Compliance Code compliant compli compli compli compli compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Differential output YES YES YES YES YES YES YES YES
Number of drives 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
Interface integrated circuit type LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER LINE TRANSCEIVER
Interface standards EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422 EIA-485-A; TIA-485-A; EIA-422
JESD-30 code S-PDSO-N8 S-PDSO-N10 S-PDSO-G10 S-PDSO-G8 S-PDSO-N8 R-PDSO-G8 S-PDSO-G8 S-PDSO-N8
JESD-609 code e3 e3 e3 e3 e3 e3 e3 e3
length 3 mm 3 mm 3 mm 3 mm 3 mm 4.9025 mm 3 mm 3 mm
Humidity sensitivity level 1 1 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 8 10 10 8 8 8 8 8
Maximum operating temperature 70 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
Minimum output swing 2 V 2 V 2 V 2 V 2 V 2 V 2 V 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
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code HVSON HVSON TSSOP TSSOP HVSON SOP TSSOP HVSON
Encapsulate equivalent code SOLCC8,.11,20 SOLCC10,.11,20 TSSOP10,.19,20 TSSOP8,.19 SOLCC8,.11,20 SOP8,.25 TSSOP8,.19 SOLCC8,.11,20
Package shape SQUARE SQUARE SQUARE SQUARE SQUARE RECTANGULAR SQUARE SQUARE
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) 260 260 260 260 260 260 260 260
power supply 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum receive delay 70 ns 70 ns 70 ns 70 ns 70 ns 70 ns 70 ns 70 ns
Number of receiver bits 1 1 1 1 1 1 1 1
Maximum seat height 0.8 mm 0.8 mm 1.1 mm 1.1 mm 0.8 mm 1.752 mm 1.1 mm 0.8 mm
Maximum supply voltage 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V
Minimum supply voltage 3 V 3 V 3 V 3 V 3 V 3 V 3 V 3 V
Nominal supply voltage 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V 3.3 V
surface mount YES YES YES YES YES YES YES YES
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form NO LEAD NO LEAD GULL WING GULL WING NO LEAD GULL WING GULL WING NO LEAD
Terminal pitch 0.5 mm 0.5 mm 0.5 mm 0.65 mm 0.5 mm 1.27 mm 0.65 mm 0.5 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 30 30 30 30 30 30 30
maximum transmission delay 50 ns 50 ns 50 ns 50 ns 50 ns 50 ns 50 ns 50 ns
width 3 mm 3 mm 3 mm 3 mm 3 mm 3.899 mm 3 mm 3 mm
Maker - Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI ) Linear ( ADI )

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