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LTC1688IS

Description
Quad Transmitter RS-422/RS-485 16-Pin SOIC N
File Size212KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC1688IS Overview

Quad Transmitter RS-422/RS-485 16-Pin SOIC N

LTC1688IS Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusLTB
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
FunctionLine Transmitter
Data Rate100Mbps
Transmitter Communication TypeRS-485|RS-422
Interface StandardsRS-485
Data Transmission TopologyMultidrop|Multipoint
Number of Transmitters4
Transmitter Signal TypeDifferential
Number of Drivers per Line1@RS-232|32@RS-485
Driving Mode3-State
Number of Transmitter Enables1
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Power Supply TypeSingle
Minimum Single Supply Voltage (V)3
Typical Single Supply Voltage (V)3.3
Maximum Single Supply Voltage (V)5
Maximum Supply Current (mA)18
Supplier Temperature GradeIndustrial
Pin Count16
Supplier PackageSOIC N
Standard Package NameSOP
MountingSurface Mount
Package Height1.5(Max)
Package Length10.01(Max)
Package Width3.99(Max)
PCB changed16
Lead ShapeGull-wing
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

LTC1688IS Related Products

LTC1688IS LTC1688CS#PBF LTC1688CS#TR LTC1688CS#TRPBF LTC1688IS#PBF LTC1688IS#TRPBF
Description Quad Transmitter RS-422/RS-485 16-Pin SOIC N Quad Transmitter RS-422/RS-485 16-Pin SOIC N Tube Quad Transmitter RS-422/RS-485 16-Pin SOIC N T/R Quad Transmitter RS-422/RS-485 16-Pin SOIC N T/R Quad Transmitter RS-422/RS-485 16-Pin SOIC N Tube Quad Transmitter RS-422/RS-485 16-Pin SOIC N T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Not Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status LTB Active LTB Active Active Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Function Line Transmitter Line Transmitter Line Transmitter Line Transmitter Line Transmitter Line Transmitter
Data Rate 100Mbps 100Mbps 100Mbps 100Mbps 100Mbps 100Mbps
Transmitter Communication Type RS-485|RS-422 RS-485|RS-422 RS-422|RS-485 RS-422|RS-485 RS-422|RS-485 RS-485|RS-422
Interface Standards RS-485 RS-485 RS-485 RS-485 RS-485 RS-485
Data Transmission Topology Multidrop|Multipoint Multipoint|Multidrop Multidrop|Multipoint Multidrop|Multipoint Multidrop|Multipoint Multipoint|Multidrop
Number of Transmitters 4 4 4 4 4 4
Transmitter Signal Type Differential Differential Differential Differential Differential Differential
Number of Drivers per Line 1@RS-232|32@RS-485 32@RS-485|1@RS-232 1@RS-232|32@RS-485 1@RS-232|32@RS-485 1@RS-232|32@RS-485 32@RS-485|1@RS-232
Driving Mode 3-State 3-State 3-State 3-State 3-State 3-State
Number of Transmitter Enables 1 1 1 1 1 1
Maximum Operating Temperature (°C) 85 70 70 70 85 85
Power Supply Type Single Single Single Single Single Single
Minimum Single Supply Voltage (V) 3 3 3 3 3 3
Typical Single Supply Voltage (V) 3.3 3.3 3.3 3.3 3.3 3.3
Maximum Single Supply Voltage (V) 5 5 5 5 5 5
Maximum Supply Current (mA) 18 18 18 18 18 18
Supplier Temperature Grade Industrial Commercial Commercial Commercial Industrial Industrial
Pin Count 16 16 16 16 16 16
Supplier Package SOIC N SOIC N SOIC N SOIC N SOIC N SOIC N
Standard Package Name SOP SOP SOP SOP SOP SOP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max) 1.5(Max)
Package Length 10.01(Max) 10.01(Max) 10.01(Max) 10.01(Max) 10.01(Max) 10.01(Max)
Package Width 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max) 3.99(Max)
PCB changed 16 16 16 16 16 16
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
Packaging - Tube Tape and Reel Tape and Reel Tube Tape and Reel
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