TRS3122 Series
1.65- to 5.5-V 1Mbps RS-232 line driver/receiver with logic supply pin & +/-15-kV IEC-ESD protection
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Contents | Type | Supplied Contents | Function | Utilized IC / Part | Protocol | Mounting Type | Data Rate▲▼ | Supplier Device Package | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Drivers/Receivers▲▼ | Number of Drivers/Receivers▲▼ | Receiver Hysteresis▲▼ | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Board(s) | Interface | Board(s) | Transceiver, RS-232 | TRS3122E | |||||||||||||
Transceiver | RS232 | Surface Mount | 1048576 bit/s | 24-VQFN (4x4) | -40 °C | 85 °C | 2 ul | 2 ul | 0.44999998807907104 V | 5.5 V | 1.649999976158142 V | 24-VFQFN Exposed Pad |
Key Features
• Extended VCCoperating nodes: 1.8 V, 3.3 V, or5.0 VUnique Tripler Charge Pump ArchitectureEnables Low VCCof 1.8V While MaintainingCompatibility with 3.3 V and 5 V SuppliesIntegrated Level-Shifting Functionality Eliminatesthe Need for External Power or Additional LevelShifter While Interfacing with Low-Voltage MCUsEnhanced ESD Protection on RIN Inputs andDOUT Outputs±15 kV IEC 61000-4-2 Air-Gap Discharge±8 kV IEC 61000-4-2 Contact Discharge±15 kV Human-Body ModelSpecified 1000-kbps Data RateAuto Powerdown Plus FeatureLow 0.5µA Shutdown Supply CurrentMeets or Exceeds Compatibility Requirements ofRS-232 InterfaceFor 2.5 V Single Supply Applications, ConsiderTRS3318E as an Optimized SolutionExtended VCCoperating nodes: 1.8 V, 3.3 V, or5.0 VUnique Tripler Charge Pump ArchitectureEnables Low VCCof 1.8V While MaintainingCompatibility with 3.3 V and 5 V SuppliesIntegrated Level-Shifting Functionality Eliminatesthe Need for External Power or Additional LevelShifter While Interfacing with Low-Voltage MCUsEnhanced ESD Protection on RIN Inputs andDOUT Outputs±15 kV IEC 61000-4-2 Air-Gap Discharge±8 kV IEC 61000-4-2 Contact Discharge±15 kV Human-Body ModelSpecified 1000-kbps Data RateAuto Powerdown Plus FeatureLow 0.5µA Shutdown Supply CurrentMeets or Exceeds Compatibility Requirements ofRS-232 InterfaceFor 2.5 V Single Supply Applications, ConsiderTRS3318E as an Optimized Solution
Description
AI
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 VLpin that allows operation in mixed-logic voltage systems. Both driver in (DIN) and receiver out (ROUT) logic levels are pin programmable through the VLpin. 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.
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 VLpin that allows operation in mixed-logic voltage systems. Both driver in (DIN) and receiver out (ROUT) logic levels are pin programmable through the VLpin. 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.