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LTC1688CS#TR

Description
LTC1688 - 100Mbps RS485 Hot Swapable Quad Drivers; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C
CategoryDrivers and interfaces   
File Size216KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC1688CS#TR Overview

LTC1688 - 100Mbps RS485 Hot Swapable Quad Drivers; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C

LTC1688CS#TR Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP,
Contacts16
Manufacturer packaging codeS
Reach Compliance Codenot_compliant
ECCN codeEAR99
Is SamacsysN
Differential outputYES
Number of drives4
Input propertiesSTANDARD
Interface integrated circuit typeLINE DRIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.9 mm
Humidity sensitivity level1
Number of functions4
Number of terminals16
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.75 mm
Maximum supply voltage5.25 V
Minimum supply voltage3 V
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
maximum transmission delay12 ns
width3.9 mm
Base Number Matches1
LTC1688/LTC1689
100Mbps RS485
Hot Swapable Quad Drivers
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Ultrahigh Speed:
100Mbps
Guaranteed Propagation Delay: 8ns
±
4ns
Over Temperature
Low Channel-to-Channel Skew: 500ps Typ
Hot Swap
TM
Capable
50Mbps Operation with V
DD
= 3V
Low t
PLH
/t
PHL
Skew: 500ps Typ
Driver Outputs Maintain High Impedance in
Three-State or with Power Off
Short-Circuit Protected: 3mA Typ Output Current
for an Indefinite Short
Thermal Shutdown Protected
Single 5V or 3V Supply
Pin Compatible with LTC486/LTC487
The LTC
®
1688/LTC1689 are ultrahigh speed, differential
bus/line drivers that can operate at data rates up to
100Mbps. Propagation delay is guaranteed at 8ns
±4ns
over the full operating temperature range. These devices
operate over the full RS485 common mode range (– 7V
to 12V), and also meet RS422 requirements.
The driver outputs are Hot Swap capable, maintaining
backplane data integrity during board insertion and
removal. The drivers feature three-state outputs, maintain-
ing high impedance over the entire common mode range
(– 7V to 12V). Outputs also remain high impedance during
power-up and with the power off. A short-circuit feature
detects bus contention and substantially reduces driver
output current. Thermal shutdown circuitry protects the
parts from excessive power dissipation.
The LTC1688 allows all four drivers to be enabled together,
while the LTC1689 allows two drivers at a time to be
enabled.
The LTC1688/LTC1689 operate from a single 5V or 3V
supply and draw only 9mA of supply current.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
High Speed RS485 Twisted-Pair Drivers
High Speed Backplane Drivers
Complementary Clock Drivers
STS-1/OC-1 Data Drivers
SCSI Drivers
TYPICAL APPLICATIO
50Mbps RS485 Data Connection
2V/DIV
DRIVER
100Ω
100Ω
2V/DIV
RECEIVER
2V/DIV
100 FT CATEGORY 5 UTP
1/4 LTC1688
1/4 LTC1518
1688/89 TA01
5V/DIV
U
20ns Pulse Across 100 Feet
of Category 5 UTP
DRIVER INPUT
DRIVER OUTPUTS
CABLE DELAY
RECEIVER INPUT
RECEIVER OUTPUT
20ns/DIV
1688/89 TA02
U
U
16889fa
1

LTC1688CS#TR Related Products

LTC1688CS#TR LTC1689CS#TR
Description LTC1688 - 100Mbps RS485 Hot Swapable Quad Drivers; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C LTC1689 - 100Mbps RS485 Hot Swapable Quad Drivers; Package: SO; Pins: 16; Temperature Range: 0°C to 70°C
Brand Name Linear Technology Linear Technology
Is it Rohs certified? incompatible incompatible
Maker Linear ( ADI ) Linear ( ADI )
Parts packaging code SOIC SOIC
package instruction SOP, SOP,
Contacts 16 16
Manufacturer packaging code S S
Reach Compliance Code not_compliant not_compliant
ECCN code EAR99 EAR99
Is Samacsys N N
Differential output YES YES
Number of drives 4 4
Input properties STANDARD STANDARD
Interface integrated circuit type LINE DRIVER LINE DRIVER
Interface standards EIA-422; EIA-485 EIA-422; EIA-485
JESD-30 code R-PDSO-G16 R-PDSO-G16
JESD-609 code e0 e0
length 9.9 mm 9.9 mm
Humidity sensitivity level 1 1
Number of functions 4 4
Number of terminals 16 16
Maximum operating temperature 70 °C 70 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 235 235
Certification status Not Qualified Not Qualified
Maximum seat height 1.75 mm 1.75 mm
Maximum supply voltage 5.25 V 5.25 V
Minimum supply voltage 3 V 3 V
Nominal supply voltage 5 V 5 V
surface mount YES YES
technology CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 20 20
maximum transmission delay 12 ns 12 ns
width 3.9 mm 3.9 mm
Base Number Matches 1 1
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