LTC2850 - 3.3V 20Mbps RS485/RS422 Transceiver

Features

  • 3.3V Supply Voltage
  • 20Mbps Maximum Data Rate
  • No Damage or Latchup Up to ±15kV HBM
  • High Input Impedance Supports 256 Nodes
    (C, I‑Grade)
  • Operation Up to 125°C (H-Grade)
  • Guaranteed Failsafe Receiver Operation Over the Entire Common Mode Range
  • Current Limited Drivers and Thermal Shutdown
  • Delayed Micropower Shutdown: 5μA Maximum
    (C, I-Grade)
  • Power Up/Down Glitch-Free Driver Outputs
  • Low Operating Current: 370μA Typical in Receive Mode
  • Compatible with TIA/EIA-485-A Specifications
  • Available in 8-Pin and 10-Pin 3mm × 3mm DFN, 8-Pin and 10-Pin MSOP, and 8-Pin and 14-Pin SO Packages
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LTC2850 Typical Application
LTC2850 Typical Application

Description

The LTC2850, LTC2851 and LTC2852 are low power, 20Mbps RS485/RS422 transceivers operating on 3.3V supplies. The receiver has a one-eighth unit load supporting up to 256 nodes per bus (C, I-grade), and a failsafe feature that guarantees a high output state under conditions of floating or shorted inputs.

The driver maintains a high output impedance over the entire common mode range when disabled or when the supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by thermal shutdown.

Enhanced ESD protection allows these parts to withstand up to ±15kV (human body model) on the transceiver interface pins without latchup or damage.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC2850CDD#PBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC2850CDD#TRPBF 3x3 DFN-8 DD C 05-08-1698 Yes
LTC2850CMS8#PBF MS-8 MS8 C 05-08-1660 Yes
LTC2850CMS8#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC2850CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC2850CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC2850HDD#PBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC2850HDD#TRPBF 3x3 DFN-8 DD H 05-08-1698 Yes
LTC2850HMS8#PBF MS-8 MS8 H 05-08-1660 Yes
LTC2850HMS8#TRPBF MS-8 MS8 H 05-08-1660 Yes
LTC2850HS8#PBF SO-8 S8 H 05-08-1610 (S8) Yes
LTC2850HS8#TRPBF SO-8 S8 H 05-08-1610 (S8) Yes
LTC2850IDD#PBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC2850IDD#TRPBF 3x3 DFN-8 DD I 05-08-1698 Yes
LTC2850IMS8#PBF MS-8 MS8 I 05-08-1660 Yes
LTC2850IMS8#TRPBF MS-8 MS8 I 05-08-1660 Yes
LTC2850IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC2850IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LTC2850MPDD 3x3 DFN-8 DD MP 05-08-1698 No
LTC2850MPDD#PBF 3x3 DFN-8 DD MP 05-08-1698 Yes
LTC2850MPDD#TRPBF 3x3 DFN-8 DD MP 05-08-1698 Yes
LTC2850MPMS8 MS-8 MS8 MP 05-08-1660 No
LTC2850MPMS8#PBF MS-8 MS8 MP 05-08-1660 Yes
LTC2850MPMS8#TRPBF MS-8 MS8 MP 05-08-1660 Yes
LTC2850MPS8 SO-8 S8 MP 05-08-1610 (S8) No
LTC2850MPS8#PBF SO-8 S8 MP 05-08-1610 (S8) Yes
LTC2850MPS8#TRPBF SO-8 S8 MP 05-08-1610 (S8) Yes


LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing
LTC2850 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC2850CDD#PBF 3x3 DFN-8 C $2.07 $1.45 Yes
LTC2850CDD#TRPBF 3x3 DFN-8 C $1.51 Yes
LTC2850CMS8#PBF MS-8 C $2.07 $1.45 Yes
LTC2850CMS8#TRPBF MS-8 C $1.51 Yes
LTC2850CS8#PBF SO-8 C $2.07 $1.45 Yes
LTC2850CS8#TRPBF SO-8 C $1.51 Yes
LTC2850HDD#PBF 3x3 DFN-8 H $2.80 $1.91 Yes
LTC2850HDD#TRPBF 3x3 DFN-8 H $1.97 Yes
LTC2850HMS8#PBF MS-8 H $2.80 $1.91 Yes
LTC2850HMS8#TRPBF MS-8 H $1.97 Yes
LTC2850HS8#PBF SO-8 H $2.80 $1.91 Yes
LTC2850HS8#TRPBF SO-8 H $1.97 Yes
LTC2850IDD#PBF 3x3 DFN-8 I $2.48 $1.74 Yes
LTC2850IDD#TRPBF 3x3 DFN-8 I $1.80 Yes
LTC2850IMS8#PBF MS-8 I $2.48 $1.74 Yes
LTC2850IMS8#TRPBF MS-8 I $1.80 Yes
LTC2850IS8#PBF SO-8 I $2.48 $1.74 Yes
LTC2850IS8#TRPBF SO-8 I $1.80 Yes
LTC2850MPDD 3x3 DFN-8 MP $6.21 $4.35 No
LTC2850MPDD#PBF 3x3 DFN-8 MP $6.21 $4.35 Yes
LTC2850MPDD#TRPBF 3x3 DFN-8 MP $4.41 Yes
LTC2850MPMS8 MS-8 MP $6.21 $4.35 No
LTC2850MPMS8#PBF MS-8 MP $6.21 $4.35 Yes
LTC2850MPMS8#TRPBF MS-8 MP $4.41 Yes
LTC2850MPS8 SO-8 MP $6.21 $4.35 No
LTC2850MPS8#PBF SO-8 MP $6.21 $4.35 Yes
LTC2850MPS8#TRPBF SO-8 MP $4.41 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC2850HDD#PBF 3x3 DFN-8 H $2.80 $1.91 Yes
LTC2850HDD#TRPBF 3x3 DFN-8 H $1.97 Yes
LTC2850IDD#PBF 3x3 DFN-8 I $2.48 $1.74 Yes
LTC2850IDD#TRPBF 3x3 DFN-8 I $1.80 Yes
LTC2850MPDD#PBF 3x3 DFN-8 MP $6.21 $4.35 Yes
LTC2850MPDD#TRPBF 3x3 DFN-8 MP $4.41 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Low Power RS485/RS422 Transceiver
  • Level Translator
  • Backplane Transceiver

Product Notifications

Please login to your MyLinear account for notifications of datasheet updates, new document releases and LTspice model announcements for your favorite products. If you do not have a MyLinear account you may Sign Up Now.

Forgot your password? Click here.
Need help? Email mylinear@linear.com with questions and comments.

Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

Technical Support