LTC1348 - 3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver
Features
- Low Supply Current: 600µA at 3.3V
- Supply Current in Shutdown: 0.2µA
- Supply Current in Receiver Alive Mode: 15µA
- ESD Protection over ±10kV
- Operates from a Single 3V to 5.5V Supply
- Operates to 120kBaud with 0.1µF Flying Capacitors
- Three-State Outputs Are High Impedance When Off
- Output Overvoltage Does Not Force Current Back into Supplies
- RS232 I/O Lines Can Be Forced to ±25V Without Damage
- Flowthrough Architecture
Typical Application
Description
The LTC™1348 is a 3-driver/5-receiver RS232 transceiver with very low supply current. The charge pump only requires five 0.1 µF capacitors. The LTC1348 provides full RS232 output levels when operated over a wide supply range of 3V to 5.5V The transceiver operates in one of four modes: Normal, Receiver Disable, Receiver Alive and Shutdown. In Normal or Receiver Disable mode, ICC is only 600µA at 3.3V and 800µA at 5V in the no load condition. In Shutdown mode, the supply current is further reduced to 0.2µA. In Receiver Alive mode, all five receivers are kept alive and the supply current is 15µA. All RS232 outputs assume a high impedance state in Shutdown or Receiver Alive mode or with the power off. The receiver outputs assume a high impedance state in Receiver Disable or with the power off. The LTC1348 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver operates up to 120kbaud with all drivers loaded with 1000pF, 3kohms. Both driver outputs and receiver inputs can be forced to �25V without damage and can survive multiple ±10kV ESD strikes.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 |
|---|---|---|---|---|---|
| LTC1348CG#PBF | SSOP-28 | G | C | 05-08-1640 (G28) | Yes |
| LTC1348CG#TRPBF | SSOP-28 | G | C | 05-08-1640 (G28) | Yes |
| LTC1348CSW#PBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1348CSW#TRPBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1348IG#PBF | SSOP-28 | G | I | 05-08-1640 (G28) | Yes |
| LTC1348IG#TRPBF | SSOP-28 | G | I | 05-08-1640 (G28) | Yes |
| LTC1348ISW#PBF | SW-28 | SW | I | 05-08-1620 (SW28) | Yes |
| LTC1348ISW#TRPBF | SW-28 | SW | I | 05-08-1620 (SW28) | Yes |
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 | |
|---|---|---|---|---|---|---|
| LTC1348CG#PBF | SSOP-28 | C | $5.85 | $4.65 | Yes | |
| LTC1348CG#TRPBF | SSOP-28 | C | $4.75 | Yes | ||
| LTC1348CSW#PBF | SW-28 | C | $5.45 | $4.40 | Yes | |
| LTC1348CSW#TRPBF | SW-28 | C | $4.50 | Yes | ||
| LTC1348IG#PBF | SSOP-28 | I | $6.75 | $5.35 | Yes | |
| LTC1348IG#TRPBF | SSOP-28 | I | $5.45 | Yes | ||
| LTC1348ISW#PBF | SW-28 | I | $6.25 | $5.05 | Yes | |
| LTC1348ISW#TRPBF | SW-28 | I | $5.15 | Yes | ||
| Buy Now • Request Samples | ||||||
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
Applications
- Notebook Computers
- Palmtop Computers
- Printers
- Portable Instruments
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