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LTC1480CN8

Description
Single Transmitter/Receiver RS-422/RS-485 8-Pin PDIP N
CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size125KB,8 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric View All

LTC1480CN8 Overview

Single Transmitter/Receiver RS-422/RS-485 8-Pin PDIP N

LTC1480CN8 Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerADI
package instructionDIP,
Reach Compliance Codenot_compliant
ECCN codeEAR99
Other featuresCOMMON I/O; TRISTATABLE RECEIVER; 1 RECEIVER ACTIVE UNDER SHUTDOWN
Differential outputYES
Number of drives1
Input propertiesDIFFERENTIAL SCHMITT TRIGGER
Interface integrated circuit typeLINE TRANSCEIVER
Interface standardsEIA-422; EIA-485
JESD-30 codeR-PDIP-T8
JESD-609 codee0
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Output characteristics3-STATE
Output polarityCOMPLEMENTARY
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum receive delay200 ns
Number of receiver bits1
Maximum seat height3.937 mm
Maximum slew rate0.6 mA
Maximum supply voltage3.6 V
Minimum supply voltage3 V
Nominal supply voltage3.3 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
maximum transmission delay80 ns
width7.62 mm
LTC1480
3.3V Ultralow Power
RS485 Transceiver
FEATURES
DESCRIPTIO
True RS485 from a Single 3.3V Supply
Low Power: I
CC
= 500µA Max with Driver Disabled
I
CC
= 600
µ
A Max with Driver Enabled, No Load
1
µ
A Quiescent in Shutdown Mode
–7V to 12V Common Mode Range Permits
±7V
Ground Difference Between Devices on the Data Line
Thermal Shutdown Protection
Power Up/Down Glitch-Free Driver Outputs Permit
Live Insertion or Removal of Transceiver
Driver Maintains High Impedance in Three-State or
with the Power Off
Up to 32 Transceivers on the Bus
50ns Typical Driver Propagation Delays with
10ns Skew
Pin Compatible with the LTC485
Available in 8-Lead DIP and SO Packages
The LTC
®
1480 is an ultralow power differential line trans-
ceiver which provides full RS485 compatibility while oper-
ating from a single 3.3V supply. It is designed for data
transmission standard RS485 applications with extended
common mode range (12V to –7V). It also meets the
requirements of RS422 and features high speed operation
up to 2.5Mb/s. The CMOS design offers significant power
savings without sacrificing ruggedness against overload
or ESD damage. Typical quiescent current is only 300µA
while operating and 1µA in shutdown.
The driver and receiver feature three-state outputs, with
the driver outputs maintaining high impedance over the
entire common mode range. Excessive power dissipation
caused by bus contention or faults is prevented by a
thermal shutdown circuit which forces the driver outputs
into a high impedance state. The receiver has a fail-safe
feature which guarantees a high output state when the
inputs are left open.
The LTC1480 is fully specified over the commercial and
extended industrial temperature range. The LTC1480 is
available in 8-pin SO and DIP packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
APPLICATIO S
Battery-Powered RS485/RS422 Applications
Low Power RS485/RS422 Transceiver
Level Translator
TYPICAL APPLICATIO
3.3V
LTC1480
RO
RE
DE
DI
R
B
120Ω
A
D
SHIELD
3.3V RS485 Network
3.3V
LTC1480
SHIELD
B
120Ω
A
3.3V
B
A
D
R
RO
OUTPUT VOLTAGE (V)
RE
DE
DI
R
LTC1480
D
1480 TA01
RO
RE DE DI
U
Driver Differential
Output Voltage vs Output Current
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
0
10
20 30 40 50 60 70
OUTPUT CURRENT (mA)
80
90
V
CC
= 3.3V
T
A
= 25°C
1480 TA02
U
U
1480fa
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