LTC490
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LTC490

Differential Driver and Receiver Pair

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Info: : PRODUCTION tooltip
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Part Details
Part Models 6
1ku List Price Starting From $3.08
Features
  • 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
Additional Details
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The LTC490 is a low power differential bus/line transceiver designed for multipoint data transmission standard RS485 applications with extended common mode range (12V to –7V). It also meets the requirements of RS422.

The CMOS design offers significant power savings over its bipolar counterpart without sacrificing ruggedness against overload or ESD damage.

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.

Both AC and DC specifications are guaranteed from 0°C to 70°C and 4.75V to 5.25V supply voltage range.

Applications

  • Low Power RS485/RS422 Transceiver
  • Level Translator
Part Models 6
1ku List Price Starting From $3.08

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC490CN8#PBF
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LTC490CS8#PBF
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LTC490CS8#TRPBF
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LTC490IN8#PBF
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LTC490IS8#PBF
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LTC490IS8#TRPBF
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC490CS8#PBF

PRODUCTION

LTC490CS8#TRPBF

PRODUCTION

LTC490IS8#PBF

PRODUCTION

LTC490IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC490CS8#PBF

PRODUCTION

LTC490CS8#TRPBF

PRODUCTION

LTC490IS8#PBF

PRODUCTION

LTC490IS8#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0241

arrow down

Epoxy Change from Henkel 8290 to 8290A for PDIP Package

Aug 6, 2022

- 22_0172

arrow down

Laser Top Mark Conversion for PDIP Packages Assembled in ADPG [PNG]

Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC490CS8#PBF

PRODUCTION

LTC490CS8#TRPBF

PRODUCTION

LTC490IS8#PBF

PRODUCTION

LTC490IS8#TRPBF

PRODUCTION

Jun 16, 2021

- 21_0026

arrow down

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC490CS8#PBF

PRODUCTION

LTC490CS8#TRPBF

PRODUCTION

LTC490IS8#PBF

PRODUCTION

LTC490IS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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EVAL-RS485FD8EBZ

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

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EVAL-RS485FD8EBZ

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

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

Product Detail

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.

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