LINEAR TECHNOLOGY - 1 LTC1483 Data Sheet User Guide
Summary
Discover the LTC1483, an ultra-low power differential transceiver designed for robust RS485 and RS422 industrial data communication. Engineered with superior features like low EMI output, high ESD protection (up to –10kV), and a wide common-mode range of –7V to 12V, this device ensures maximum signal integrity in demanding environments. This manual serves as your comprehensive guide, providing critical technical specifications, detailed electrical characteristics, package dimensions, and guidance required for reliable system integration into any complex bus network design.
Page 1 Text Content
LTC1483
Ultra-Low Power RS485 Low EMI Transceiver with Shutdown
SFEATURE ESCRIPTIO
Low Power: ICC = 120µA Max with Driver Disabled The LTC®1483 is an ultra-low power differential line trans- ICC = 500µA Max with Driver Enabled, No Load ceiver designed for data transmission standard RS485
1µA Quiescent Current in Shutdown Mode applications with extended common-mode range (–7V to Controlled Slew Rate Driver for Reduced EMI 12V). It will also meet the requirements of RS422. The Single 5V Supply LTC1483 features output drivers with controlled slew rate, Drivers/Receivers Have ±10k V ESD Protection decreasing the EMI radiated from the RS485 lines, and –7V to 12V Common-Mode Range Permits ±7V improving signal fidelity with misterminated lines. The Ground Difference Between Devices on the Data Line CMOS design offers significant power savings over its Thermal Shutdown Protection bipolar counterparts without sacrificing ruggedness against Power Up/Down Glitch-Free Driver Outputs Permit overload or ESD damage. Typical quiescent current is only Live Insertion or Removal of Transceiver 80µA while operating and less than 1µA in shutdown.
Driver Maintains High Impedance in Three-State
The driver and receiver feature three-state outputs, with
or with the Power Off
the driver outputs maintaining high impedance over the
Up to 32 Transceivers on the Bus
entire common-mode range. Excessive power dissipation
Pin Compatible with the LTC485
caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs
PPLICATI SA
into a high impedance state. The receiver has a fail-safe feature which guarantees a high output state when the
Battery-Powered RS485/RS422 Applications
inputs are left open. I/O pins are protected against multiple
Low Power RS485/RS422 Transceiver
ESD strikes of over ±10k V.
Level Translator
The LTC1483 is fully specified over the commercial and extended industrial temperature range and is available in 8-pin DIP and SO packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
PPLICATITYPICAL RO1 VCC1 RE1 DI
RTERM
DI1 GND1
RTERM
RO2 VCC2 RE2
DI2 GND2
LTC1483 • TA01
1483 TA02
sn1483 1483fs
Page Summary Contents For LINEAR TECHNOLOGY - 1 LTC1483 Data Sheet User Guide
Manual Details
| Brand | Linear |
|---|---|
| Pages | 8 |
| File Size | 185.86 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
What is the quiescent current in shutdown mode?
The typical quiescent current in shutdown mode is less than 1mA.
Does this transceiver meet RS232 requirements?
No, it meets RS485 and RS422 standards. It does not support RS232.
Can this device handle poor signal quality or noise?
Yes, the –7V to 12V common-mode range improves signal fidelity with terminated lines.
How is EMI reduced?
The output drivers feature a controlled slew rate and –10kV ESD protection to decrease radiated EMI from RS485 lines.