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LMS485

Features: ·Meet ANSI standard RS-485-A and RS-422-B·Data rate 2.5 Mbps·Single supply voltage operation, 5V·Thermal shutdown protection·Short circuit protection·Low power BiCMOS·Allows up to 32 transceivers on the bus·Open circuit fail-safe for receiver·Extended operating temperature range −4...

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SeekIC No. : 004396787 Detail

LMS485: Features: ·Meet ANSI standard RS-485-A and RS-422-B·Data rate 2.5 Mbps·Single supply voltage operation, 5V·Thermal shutdown protection·Short circuit protection·Low power BiCMOS·Allows up to 32 trans...

LMS485 Data Sheet

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Part Number:
LMS485
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/27

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Product Details

Description



Features:

·Meet ANSI standard RS-485-A and RS-422-B
·Data rate 2.5 Mbps
·Single supply voltage operation, 5V
·Thermal shutdown protection
·Short circuit protection
·Low power BiCMOS
·Allows up to 32 transceivers on the bus
·Open circuit fail-safe for receiver
·Extended operating temperature range −40°C to 85°C
·Drop-in replacement to MAX485
·Available in 8-pin SOIC and 8-Pin DIP package


Application

`Low power RS-485 systems
`Network hubs, bridges, and routers
`Point of sales equipment (ATM, barcode scanners,.)
`Local area networks (LAN)
`Integrated service digital network (ISDN)
`Industrial programmable logic controllers
`High speed parallel and serial applications
`Multipoint applications with noisy environment


Pinout

Connection Diagram


Specifications

Supply Voltage, VCC (Note 2) .................................................................6V
Input Voltage, VIN (DI, DE, or RE) ...............................−0.3V to VCC + 0.3V
Voltage Range at Bus Terminals (AB) ........................................−7V to 12V
Receiver Output ..........................................................−0.3V to VCC + 0.3V
Package Thermal Impedance, JA
SOIC ..............................................................................................125/W
DIP ...................................................................................................92/W
Junction Temperature (Note 3) ...........................................................150
Operating Free-Air Temperature
Range, TA
Commercial .................................................................................0 to 70
Industrial ................................................................................−40 to 85
Storage Temperature Range ................................................−65 to 150
Soldering Information
Infrared or Convection (20 sec.) .........................................................235
Lead Temperature Range .................................................................+260
ESD Rating (Human Body Model)(Note 4)
Bus Pins ...............................................................................................15kV
Other Pins ..............................................................................................2kV
ESD Rating (Machine Model)
All Pins .................................................................................................200V


Description

The LMS485 is a low power differential bus/line transceiver designed for high speed bidirectional data communication on multipoint bus 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. The LMS485 combines a TRI-STATE™ differential line driver and differential input receiver, both of which operate from a single 5.0V power supply.

The driver and receiver have an active high and active low, respectively, that can be externally connected to function as a direction control. The driver and receiver differential inputs are internally connected to form differential input/output (I/O) bus ports that are designed to offer minimum loading to bus whenever the driver is disabled or when VCC = 0V. These ports feature wide positive and negative common mode voltage ranges, making the device suitable for multipoint applications in noisy environments.

The LMS485 is available in a 8-Pin SOIC and 8-Pin DIP packages. It is a drop-in socket replacement to Maxim's MAX485




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