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

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.

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
Applications
  • Battery-Powered Systems
  • Computers and Consumer Electronics
  • Diagnostic Ports
Packaging
LTC2803 Package Drawing
LTC2803 Package Drawing
LTC2803 Package Drawing
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LTC2803CDHC#PBF5x3 DFN-16C$2.71$1.90
LTC2803CDHC#TRPBF5x3 DFN-16C$1.96
LTC2803CGN-1#PBFSSOP-16C$2.71$1.90
LTC2803CGN-1#TRPBFSSOP-16C$1.96
LTC2803IDHC#PBF5x3 DFN-16I$3.21$2.25
LTC2803IDHC#TRPBF5x3 DFN-16I$2.31
LTC2803IGN-1#PBFSSOP-16I$3.21$2.25
LTC2803IGN-1#TRPBFSSOP-16I$2.31
Demo Boards
Part NumberDescriptionPrice
DC827A-ALTC2803 RS232 demo board$50.00
Datasheet
Reliability Data
Product Selector Card
LT Journal
Press Release
CAD Symbol
Related Products
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LTC2803 Footprints and Symbols