2Tx/2Rx Low Voltage, Low Power RS232 Transceiver
Product details
Parameters
Package | Pins | Size
Features
- Extended VCC operating nodes: 1.8 V, 3.3 V, or
5.0 V- Unique Tripler Charge Pump Architecture
Enables Low VCC of 1.8V While Maintaining
Compatibility with 3.3 V and 5 V Supplies
- Unique Tripler Charge Pump Architecture
- Integrated Level-Shifting Functionality Eliminates
the Need for External Power or Additional Level
Shifter While Interfacing with Low-Voltage MCUs - Enhanced ESD Protection on RIN Inputs and
DOUT Outputs- ±15 kV IEC 61000-4-2 Air-Gap Discharge
- ±8 kV IEC 61000-4-2 Contact Discharge
- ±15 kV Human-Body Model
- Specified 1000-kbps Data Rate
- Auto Powerdown Plus Feature
- Low 0.5µA Shutdown Supply Current
- Meets or Exceeds Compatibility Requirements of
RS-232 Interface - For 2.5 V Single Supply Applications, Consider
TRS3318E as an Optimized Solution
Description
The TRS3122E is a two-driver and two-receiver RS-232 interface device, with split supply pins for mixed-voltage operation. All RS-232 inputs and outputs are protected to ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model.
The charge pump requires five small 0.1-µF capacitors for operation from as low as a 1.8-V supply. The TRS3122E is capable of running at data rates up to 1000 kbps, while maintaining RS-232-compatible output levels.
The TRS3122E has a unique VL pin that allows operation in mixed-logic voltage systems. Both driver in (DIN) and receiver out (ROUT) logic levels are pin programmable through the VL pin. This eliminates the need for additional voltage level shifter while interfacing with low-voltage microcontrollers or UARTs.
Auto Powerdown Plus automatically places the device in a low power mode when the device has not received or transmitted data for more than 30 seconds. This feature makes this device a very attractive option for battery powered or other power-sensitive applications.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | TRS3122E 1.8 V Low Power Dual RS-232 Transceiver datasheet (Rev. C) | May 13, 2016 |
User guide | RS232 BoosterPack™ Getting Started Guide | Dec. 08, 2016 | |
Application note | Designing with the TRS3122E (Rev. A) | Jul. 23, 2016 | |
User guide | TRS3122EEVM User's Guide | Mar. 16, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The BOOSTXL-RS232 is a BoosterPack™ Plug-in Module for a TI LaunchPad™ Development Kit. The BOOSTXL-RS232 enables quick RS-232 prototyping with the TRS3122E, the industry’s first 1.8-V inductor-less low-power RS-232 transceiver. The board is equipped with a DB-9 (...)
Features
- Auto-powerdown plus
- Low 0.5-µA shutdown current
- Capable of translating 1v8 or 3v3 TTL logic to ± 5-V RS-232 signal
- Dual channel allows for serial RX/TX and flow control (CTS/RTS)
- DB-9 port connection monitoring
- Compatible with a wide range of TI LaunchPads
- On board LEDs connected to RS-232 signal paths
Description
Features
- Interface with MCUs or processors from 1.65 V up to 5.5V
- High-speed RS-232 communication, up to 1Mbps
- Autopower down plus for very low power consumption (1µA) during shutdown
- Robust IEC61000-4-2 qualification enables human-interfaced applications
- Very small QFN package saves board space and cost
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-01230 BOM.pdf (66KB) -
download TIDA-01230 Assembly Drawing.pdf (121KB) -
download TIDA-01230 PCB.pdf (448KB) -
download TIDA-01230 CAD Files.zip (291KB) -
download TIDA-01230 Gerber.zip (297KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN (RGE) | 24 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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