LTC1338 - 5V Low Power RS232 5-Driver/3-Receiver Transceiver
Features
- Low Supply Current: 500µA
- 0.2µA Supply Current in SHUTDOWN
- 50µA Supply Current in RECEIVER ALIVE Mode
- ESD Protection Over ±10kV
- Operates from a Single 5V Supply
- Uses Small Capacitors: 0.1µF
- Operates to 120k Baud
- Three-State Outputs Are High Impedance When Off
- Output Overvoltage Does Not Force Current
- RS232 I/O Lines Can Be Forced to ±25V Without Damage
- Flowthrough Architecture
Typical Application
Description
The LTC1338 is a 5-driver/3-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 500µA. The charge pump only requires four 0.1µF capacitors.In SHUTDOWN mode, the supply current is further reduced to 0.2µA. In RECEIVER ALIVE mode, all three receivers are kept alive and the supply current is 50µA. All RS232 outputs assume a high impedance state in SHUTDOWN and with the power off.
The LTC1338 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3kohms load. 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 |
|---|---|---|---|---|---|
| LTC1338CG#PBF | SSOP-28 | G | C | 05-08-1640 (G28) | Yes |
| LTC1338CG#TRPBF | SSOP-28 | G | C | 05-08-1640 (G28) | Yes |
| LTC1338CNW#PBF | NW-28 | NW | C | 05-08-1520 | Yes |
| LTC1338CSW#PBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1338CSW#TRPBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1338IG#PBF | SSOP-28 | G | I | 05-08-1640 (G28) | Yes |
| LTC1338IG#TRPBF | SSOP-28 | G | I | 05-08-1640 (G28) | Yes |
| LTC1338INW#PBF | NW-28 | NW | I | 05-08-1520 | Yes |
| LTC1338ISW#PBF | SW-28 | SW | I | 05-08-1620 (SW28) | Yes |
| LTC1338ISW#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 | |
|---|---|---|---|---|---|---|
| LTC1338CG#PBF | SSOP-28 | C | $6.75 | $5.45 | Yes | |
| LTC1338CG#TRPBF | SSOP-28 | C | $5.55 | Yes | ||
| LTC1338CNW#PBF | NW-28 | C | $6.25 | $5.05 | Yes | |
| LTC1338CSW#PBF | SW-28 | C | $6.25 | $5.05 | Yes | |
| LTC1338CSW#TRPBF | SW-28 | C | $5.15 | Yes | ||
| LTC1338IG#PBF | SSOP-28 | I | $7.45 | $5.85 | Yes | |
| LTC1338IG#TRPBF | SSOP-28 | I | $5.95 | Yes | ||
| LTC1338INW#PBF | NW-28 | I | $6.95 | $5.60 | Yes | |
| LTC1338ISW#PBF | SW-28 | I | $6.95 | $5.60 | Yes | |
| LTC1338ISW#TRPBF | SW-28 | I | $5.70 | 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
- Battery-Powered Modems
- Battery-Powered DCE
- Notebook Computers
- Palmtop Computers
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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
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
