Overview
The TRS202EIDR, manufactured by Texas Instruments, is a 5-V dual-channel RS-232 line driver/receiver. This device is designed to provide a robust and reliable interface between an asynchronous communication controller and a serial-port connector. It operates from a single 5V supply and includes a dual charge-pump circuit that generates the necessary voltage levels for RS-232 communication. The TRS202EIDR features high-level ESD protection, meeting IEC61000-4-2 (Level 4) standards, and supports data signaling rates up to 120 kbit/s.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage (VCC) | 4.5 to 5.5 | V |
| Data Signaling Rate | Up to 120 kbit/s | - |
| ESD Protection | ±8kV Contact, ±15kV Air-gap, ±15kV Human-body model | - |
| External Capacitors | 4 × 0.1µF or 4 × 1µF | - |
| Driver Output Slew Rate | Up to 30V/µs | - |
| Junction-to-Ambient Thermal Resistance (RθJA) | 84.6 | °C/W |
Key Features
- IEC61000-4-2 (Level 4) ESD protection for RS-232 bus pins, including ±8kV contact discharge, ±15kV air-gap discharge, and ±15kV human-body model
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
- Operates at 5V VCC supply and supports data signaling rates up to 120 kbit/s
- Includes a dual charge-pump circuit that requires four small external capacitors (0.1µF or 1µF)
- Latch-up performance exceeds 100mA per JESD 78, class II
- Two line drivers and two line receivers with Schmitt trigger inputs for improved noise immunity
- Internal 5kΩ load resistors on the receivers
Applications
- Battery-powered systems
- Notebooks and laptops
- Set-Top Boxes
- Hand-held equipment
The TRS202EIDR is suitable for any application requiring reliable RS-232 communication with robust ESD protection and efficient power management.
Q & A
- What is the operating voltage of the TRS202EIDR?
The TRS202EIDR operates at a supply voltage (VCC) of 5V, with a range of 4.5V to 5.5V.
- What is the maximum data signaling rate supported by the TRS202EIDR?
The device supports data signaling rates up to 120 kbit/s.
- What kind of ESD protection does the TRS202EIDR offer?
The TRS202EIDR features IEC61000-4-2 (Level 4) ESD protection, including ±8kV contact discharge, ±15kV air-gap discharge, and ±15kV human-body model.
- What type of capacitors are required for the TRS202EIDR?
The device requires four external capacitors, either 0.1µF or 1µF, for the charge-pump circuit.
- Does the TRS202EIDR meet industry standards for RS-232 communication?
Yes, the TRS202EIDR meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
- What is the thermal resistance of the SOIC (D) package?
The junction-to-ambient thermal resistance (RθJA) for the SOIC (D) package is 84.6 °C/W.
- What are the typical applications for the TRS202EIDR?
The device is commonly used in battery-powered systems, notebooks, laptops, set-top boxes, and hand-held equipment.
- Does the TRS202EIDR have internal pull-up resistors on the driver inputs?
No, the driver inputs do not have internal pull-up resistors and should not be left floating.
- How many channels does the TRS202EIDR support?
The device supports two driver and two receiver channels for full duplex transmission.
- What is the maximum output slew rate of the drivers?
The maximum driver output slew rate is up to 30V/µs.
