LMS485IMX/NOPB

Series: -
Mounting Type: Surface Mount
Type: Transceiver
Number of Drivers/Receivers: 1/1
Protocol: RS422, RS485
Voltage - Supply: 4.75 V ~ 5.25 V
Package / Case: 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package: 8-SOIC
Packaging: Tape & Reel (TR)
Manufacturer: National Semiconductor


Pinout




Description

The LMS485IMX/NOPB is designed as a low power differential bus/line transceiver for high speed bidirectional data communication on multipoint transmission lines. It is designed for balanced transmission lines. It meets ANSI standards TIA/EIA RS422-B, TIA/EIA RS485-A and ITU recommendation and V.11 and X.27.

LMS485IMX/NOPB has eleven features. (1)Meet ANSI standard RS-485-A and RS-422-B. (2)Data rate 2.5Mbps. (3)Single supply voltage operation, 5V. (4)Thermal shutdown protection. (5)Short circuit protection. (6)Low power BiCMOS. (7)Allows up to 32 transceivers on the bus. (8)Open circuit fail-safe for receiver. (9)Extended operating temperature range -40°C to 85°C. (10)Drop-in replacement to MAX485. (11)Available in 8-pin SOIC and 8-Pin DIP package. Those are all the main features.

Some absolute maximum ratings of LMS485IMX/NOPB have been concluded into several points as follow. (1)Its supply voltage would be 7V. (2)Its input voltage would be from -0.3V to Vcc+0.3V. (3)Its voltage range at any bus terminal would be from -7V to 12V. (4)Its receiver outputs would be from -0.3V to Vcc+0.3V. (5)Its package thermal impedance would be 125°C/W. (6)Its junction temperature would be 150°C. (7)Its operating free-air temperature range would be from 0°C to 70°C for commercial and would be from -40°C to 85°C for industrial. (8)Its storage temperature range would be from -65°C to 150°C. (9)Its soldering information infrared or convection 20 seconds would be 260°C. (10)Its ESD rating would be 7KV. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics of LMS485IMX/NOPB are concluded as follow. (1)Its differential output voltage would be max 5.25V at R= and would be min 2.0V at R=50ohms, RS-422 and would be min 1.5V and max 5.0V at R=27ohms and RS-485. (2)Its common mode output voltage would be 3.0V. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!