LTC2803 - 1.8V to 5.5V RS-232 Single and Dual Transceivers

Features

  • 1.8V to 5.5V Supply Voltage
  • Single and Dual Transceivers
  • High-Speed Operation
    1Mbps for 250pF/3kΩ Load (LTC2802, LTC2804)
    250kbps for 1nF/3kΩ Load
    100kbps for 2.5nF/3kΩ TIA/EIA-232-F Load
  • Low-Power 1μA Shutdown and 15μA Receivers- Active Modes
  • No Damage or Latchup to ±10kV ESD on RS-232 Interface
  • Logic Supply Pin for Easy Level-Shifting to UART or Microprocessor
  • Low-Latency Output Enable Allows Line Sharing and Half-Duplex Operation
  • True RS-232 Compliant Output Levels
  • Small Footprint:
    LTC2801/LTC2802 4mm × 3mm DFN Package
    LTC2803/LTC2804 Narrow SSOP-16 and
    5mm × 3mm DFN Packages

Typical Application

LTC2803 Typical Application
LTC2803 Typical Application

Description

The LTC2801/LTC2802/LTC2803/LTC2804 are single and dual RS-232 transceivers in narrow SSOP and chip-scale DFN packages. All operate over a supply range of 1.8V to 5.5V, which permits operation directly from two alkaline, NiCd or NiMH cells. An integrated DC-to-DC converter generates power supplies for driving RS-232 levels. A logic supply pin allows easy interfacing with different logic levels independent of the DC-DC supply.

These parts are compatible with the TIA/EIA-232-F standard. Driver outputs are protected from overload and can be shorted to ground or up to ±15V without damage. To extend battery life, receivers can be kept active, operating at reduced speed, with only 15μA current. In shutdown mode, current is further reduced to 1μA.

Part Number Drivers & Receivers Max Data Rate Modes Package
LTC2801 1 + 1 0.25Mbps SD, RA, DD, AO DFN-12
LTC2802 1+ 1 1Mbps SD, RA, DD, AO DFN-12
LTC2803 2 + 2 0.25Mbps SD, RA, DD, AO DFN-16
LTC2803-1 2 + 2 0.25Mbps SD, AO SSOP-16
LTC2804 2 + 2 1Mbps SD, RA, DD, AO DFN-16
LTC2804-1 2 + 2 1Mbps SD, AO SSOP-16

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

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

Part Number Package Code Temp Package
Drawing
RoHS
LTC2803CDHC#PBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC2803CDHC#TRPBF 5x3 DFN-16 DHC C 05-08-1706 Yes
LTC2803CGN-1#PBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC2803CGN-1#TRPBF SSOP-16 GN C 05-08-1641 (GN16) Yes
LTC2803IDHC#PBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC2803IDHC#TRPBF 5x3 DFN-16 DHC I 05-08-1706 Yes
LTC2803IGN-1#PBF SSOP-16 GN I 05-08-1641 (GN16) Yes
LTC2803IGN-1#TRPBF SSOP-16 GN I 05-08-1641 (GN16) Yes


LTC2803 Package Drawing
LTC2803 Package Drawing
LTC2803 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
LTC2803CDHC#PBF 5x3 DFN-16 C $2.71 $1.90 Yes
LTC2803CDHC#TRPBF 5x3 DFN-16 C $1.96 Yes
LTC2803CGN-1#PBF SSOP-16 C $2.71 $1.90 Yes
LTC2803CGN-1#TRPBF SSOP-16 C $1.96 Yes
LTC2803IDHC#PBF 5x3 DFN-16 I $3.21 $2.25 Yes
LTC2803IDHC#TRPBF 5x3 DFN-16 I $2.31 Yes
LTC2803IGN-1#PBF SSOP-16 I $3.21 $2.25 Yes
LTC2803IGN-1#TRPBF SSOP-16 I $2.31 Yes
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* 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.

Part Number Description Price Documentation
DC827A-A LTC2803 RS232 demo board $50.00
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Click here to view our complete list of demo boards

Applications

  • Battery-Powered Systems
  • Computers and Consumer Electronics
  • Diagnostic Ports

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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:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support