LT1342
PRODUCTION5V RS232 Transceiver with 3V Logic Interface
- Part Models
- 5
- 1ku List Price
- Starting From $6.36
Overview
- ESD Protection Over ±10kV
- 3V Logic Interface
- Uses Small Capacitors: 0.1µF, 0.2µF
- 1µA Supply Current in Shutdown
- Low Power Driver Disable Operating Mode
- Pin Compatible with LT1137A
- 120kBaud Operation for RL = 3k, CL = 2500pF
- 250kBaud Operation for RL = 3k, CL = 1000pF
- CMOS Comparable Low Power: 60mW
- Easy PC Layout: Flowthrough Architecture
- Rugged Bipolar Design
- Outputs Assume a High Impedance State When Off or Powered Down
- Absolutely No Latch-Up
The LT1342 is an advanced low power three-driver, five-receiver RS232 transceiver. The LT1342 operates from a 5V supply and a 3V logic supply. Receiver outputs can interface directly to 3V logic circuits. Included on the chip is a shutdown pin for reducing supply current to near zero. All receivers and drivers assume high impedance states during shutdown.
The driver disable function provides additional control of operating mode. When driver disable is high the charge pump and drivers turn off. Receivers continue to operate during driver disable.
New ESD structures on the chip allow the LT1342 to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins.
The LT1342 is fully compliant with all EIA RS232 specifications and operates in excess of 120kbaud even driving heavy capacitive loads.
Applications
- Notebook Computers
- Palmtop Computers
Documentation
Data Sheet 1
Reliability Data 1
Design Note 1
Video 1
Product Selector Card 2
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT1342CG#PBF | 28-Lead SSOP | ||
| LT1342CG#TRPBF | 28-Lead SSOP | ||
| LT1342CNW#PBF | 28-Lead PDIP (Wide 0.6 Inch) | ||
| LT1342CSW#PBF | 28-Lead SOIC (Wide 0.3 Inch) | ||
| LT1342CSW#TRPBF | 28-Lead SOIC (Wide 0.3 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG |
||
| LT1342CG#PBF | PRODUCTION | |
| LT1342CG#TRPBF | PRODUCTION | |
|
Mar 7, 2019 - 19_0046 Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek |
||
| LT1342CNW#PBF | PRODUCTION | |
|
Aug 10, 2022 - 22_0176 Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL |
||
| LT1342CSW#PBF | PRODUCTION | |
| LT1342CSW#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.