LTC490

PRODUCTION

Differential Driver and Receiver Pair

Data Sheet Product Selection Table
Part Models
6
1ku List Price
Starting From $3.08
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Part Details

  • Low Power: ICC = 300µA Typical
  • Designed for RS485 or RS422 Applications
  • Single 5V Supply
  • -7V to 12V Bus Common-Mode Range Permits ±7V Ground Difference Between Devices on the Bus
  • Thermal Shutdown Protection
  • Power-Up/Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Package
  • Driver Maintains High Impedance with the Power Off
  • Combined Impedance of a Driver Output and Receiver Allows up to 32 Transceivers on the Bus
  • 70mV Typical Input Hysteresis
  • 28ns Typical Driver Propagation Delays with 5ns Skew for 2.5MB Operation
  • Pin Compatible with the SN75179
  • Available in 8-Lead PDIP and SO Packages
LTC490
Differential Driver and Receiver Pair
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Documentation

Data Sheet 1

Reliability Data 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Isolated RS-485 1
LTM2881
PRODUCTION Complete Isolated RS485/RS422 μModule Transceiver + Power
RS-485 and RS-422 1
LTC2863
PRODUCTION ±60V Fault Protected 3V to 5.5V RS485/RS422 Transceivers
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Evaluation Kits

eval board
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EVAL-RS485FD8EBZ

Standard RS-485 Full-Duplex (8-lead SOIC) Evaluation Board, EVAL-RS485FD8EBZ

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Product Details

The EVAL-RS485FD8EBZ allows quick and easy evaluation of full-duplex RS-485 transceivers with standard 8-lead SOIC footprints. The evaluation board allows interfacing via screw terminal block to digital I/O for driver input (DI) and receiver output (RO). Bus signals A, B, Y and Z (full-duplex bus) can be connected to a bus screw terminal block. Termination resistors are fitted across A and B, as well as Y and Z. These can be connected in half-duplex configuration (A to Y, B to Z), in order to evaluate the RS-485 driver. Footprints are provided for pull-up and pull-down (biasing resistors) on the receiver inputs in order to provide the option to evaluate an RS-485 receiver with this configuration.

Devices for evaluation on the board must be ordered separately.
EVAL-RS485FD8EBZ
Standard RS-485 Full-Duplex (8-lead SOIC) Evaluation Board, EVAL-RS485FD8EBZ
Eval-RS485FD8EBZ

Latest Discussions

6 Years Ago
RE: SPICE model for LTC490 (differential driver and receiver pair)
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