LTC1345 - Single Supply V.35 Transceiver
Features
- Single Chip Provides All V.35 Differential Clock
and Data Signals - Operates From Single 5V Supply
- Software Selectable DTE or DCE Configuration
- Transmitters and Receivers Will Withstand
Repeated ±10kV ESD Pulses - Shutdown Mode Reduces Icc to 1µA Typ
- 10MBaud Transmission Rate
- Transmitter Maintains High Impedance When
Disabled, Shut Down, or with Power Off - Meets CCITT V.35 Specification
- Transmitters are Short-Circuit Protected
Typical Application
Description
The LTC®1345 is a single chip transceiver that provides the differential clock and data signals for a V.35 interface from a single 5V supply. Combined with an external resistor termination network and an LT®1134A RS232 transceiver for the control signals, the LTC1345 forms a complete low power DTE or DCE V.35 interface port operating from a single 5V supply. The LTC1345 features three current output differential transmitters, three differential receivers, and a charge pump. The transceiver can be configured for DTE or DCE operation or shut down using two Select pins. In the Shutdown mode, the supply current is reduced to 1µA. The transceiver operates up to 10Mbaud. All transmitters feature short-circuit protection and a Receiver Output Enable pin allows the receiver outputs to be forced into a high impedance state. Both transmitter outputs and receiver inputs feature ±10kV ESD protection. The charge pump features a regulated VEE output using three external 1µF capacitors.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 |
|---|---|---|---|---|---|
| LTC1345CNW#PBF | NW-28 | NW | C | 05-08-1520 | Yes |
| LTC1345CSW#PBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1345CSW#TRPBF | SW-28 | SW | C | 05-08-1620 (SW28) | Yes |
| LTC1345ISW#PBF | SW-28 | SW | I | 05-08-1620 (SW28) | Yes |
| LTC1345ISW#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 | |
|---|---|---|---|---|---|---|
| LTC1345CNW#PBF | NW-28 | C | $9.25 | $7.30 | Yes | |
| LTC1345CSW#PBF | SW-28 | C | $9.60 | $7.55 | Yes | |
| LTC1345CSW#TRPBF | SW-28 | C | $7.65 | Yes | ||
| LTC1345ISW#PBF | SW-28 | I | $11.00 | $8.70 | Yes | |
| LTC1345ISW#TRPBF | SW-28 | I | $8.80 | 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
- Modems
- Telecommunications
- Data Routers
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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.
