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LTC1518CS#PBF

Description
IC LINE RCVR RS485 QUAD 16-SOIC
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size177KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC1518CS#PBF Overview

IC LINE RCVR RS485 QUAD 16-SOIC

LTC1518CS#PBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP, SOP16,.4
Contacts16
Manufacturer packaging codeS
Reach Compliance Codecompliant
ECCN codeEAR99
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE RECEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeR-PDSO-G16
JESD-609 codee3
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
Encapsulate equivalent codeSOP16,.4
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
power supply5 V
Certification statusNot Qualified
Maximum receive delay22 ns
Number of receiver bits4
Maximum seat height1.75 mm
Maximum slew rate20 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 pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
Base Number Matches1
LTC1518/LTC1519
52Mbps Precision Delay
RS485 Quad Line Receivers
FEATURES
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Precision Propagation Delay: 18.5ns
±3.5ns
Over
0°C to 70°C Temperature Range
High Data Rate:
52Mbps
Low t
PLH
/t
PHL
Skew: 500ps Typ
Low Channel-to-Channel Skew: 500ps Typ
Guaranteed Fail-Safe Operation over the Entire
Common Mode Range
–7V to 12V RS485 Input Common Mode Range
Input Resistance
22k, Even When Unpowered
Hot Swap
TM
Capable
High Common Mode Rejection to 26MHz
Short-Circuit Protection: 10mA Typ Output Current
for an Indefinite Short
Three-State Output Capability
Will Not Oscillate with Slow Moving Input Signals
Single 5V Supply
Pin Compatible with LTC488, LTC489
The LTC
®
1518/LTC1519 are high speed, precision delay
differential quad bus/line receivers that can operate at data
rates as high as 52Mbps. They are pin compatible with the
LTC488/LTC489 RS485 line receivers and operate over the
entire – 7V to 12V common mode range. A unique architec-
ture provides very stable propagation delays and low skew
over wide input common mode, input overdrive and ambi-
ent temperature ranges. Propagation delay is 18.5ns
±3.5ns
over the commercial temperature range. Typical t
PLH
/t
PHL
and channel-to-channel skew is 500ps.
Each receiver translates differential input levels (V
ID
 ≥
300mV) into valid CMOS and TTL output levels. Its high
input resistance (≥ 22k) allows many receivers to be con-
nected to the same driver. The receiver outputs go into a
high impedance state when disabled.
The receivers have a fail-safe feature that guarantees a high
output state when the inputs are shorted or left floating.
Other protection features include thermal shutdown and a
controlled maximum short-circuit current (50mA Max).
Input resistance remains
22k when the device is
unpowered or disabled, thus allowing hot swapping with-
out loading the data lines.
The LTC1518/LTC1519 operate from a single 5V supply
and draw 12mA of supply current.
APPLICATIO S
s
s
s
s
s
High Speed RS485/RS422 Receivers
STS-1/OC-1 Data Receivers
PECL Line Receivers
Level Translators
Fast-20/Fast-40 SCSI Receiver
, LTC and LT are registered trademarks of Linear Technology Corporation.
Hot Swap is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
RE
2
RO
1
7
DI
4
3
DE
LTC1685
6
100Ω
4 A 1
12
3
RO
2 B
Propagation Delay Guaranteed to Fall
Within Shaded Area (±3.5ns)
T
A
= 0°C TO 70°C
RECEIVER
INPUT
V
ID
= 1.5V
RECEIVER
OUTPUT
V
DD
= 5V
52Mbps Data Communication over Twisted Pair
RE
2
1
7
100Ω
4
6
3
DE
DI
RO
V
OUT
=
5V/DIV
V
IN
=
3V/DIV
EN
EN
1/4 LTC1518
LTC1685
1518/19 F08
–5
0
5
U
10 15 20 25 30 35 40 45
TIME (ns)
1518/19 TA02
U
U
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