Overview
Features and Benefits
- 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
- 5mm × 3mm DFN Packages
Product Details
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 | Driver & 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 |
Applications
- Battery-Powered Systems
- Computers and Consumer Electronics
- Diagnostic Ports
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation
Reliability Data (1)
User Guides (1)
Tools & Simulations
IBIS Models
Reference Materials
Product Selector Card (2)
Product Selection Guide (1)
Protect your Innovations: from High Precision to High Power
Technical Articles (2)
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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 Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.