Overview
The TRS3232EIDBR, produced by Texas Instruments, is a 3V to 5.5V multichannel RS-232 line driver and receiver. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector, adhering to the TIA/EIA-232-F and ITU V.28 standards. It features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply, making it versatile for various applications. The TRS3232EIDBR includes two line drivers and two line receivers, offering high ESD protection and low supply current, making it suitable for battery-powered systems and other low-power applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 / 5 | 5.5 | V |
| Input Voltage (Drivers) | -0.3 | - | 6 | V |
| Input Voltage (Receivers) | -25 | - | 25 | V |
| Output Voltage (Drivers) | -13.2 | - | 13.2 | V |
| Supply Current (ICC) | 0.3 | 1 | - | mA |
| Operating Temperature | -40 | - | 85 | °C |
| Data Signaling Rate | - | - | 250 | kbps |
| Driver Output Slew Rate | - | - | 30 | V/μs |
| ESD Protection | ±15kV | - | - | HBM / IEC61000-4-2 |
Key Features
- ESD protection for RS-232 bus pins: ±15kV (HBM), ±8kV (IEC61000-4-2, Contact discharge), and ±15kV (IEC61000-4-2, Air-gap discharge)
- Meets or exceeds TIA/EIA-232-F and ITU V.28 standards
- Operates with 3-V to 5.5-V VCC supply, interoperable with RS-232 down to 2.7-V VCC
- Two drivers and two receivers
- Low supply current: 300 μA (typical)
- External capacitors: 4 × 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- Available in near chip-scale package (QFN-16, 3 mm x 3 mm), 85% smaller than SOIC-16
- Pin compatible to alternative high-speed devices (1 Mbps)
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- Notebooks
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the TRS3232EIDBR?
The TRS3232EIDBR operates with a supply voltage (VCC) range of 3V to 5.5V.
- What are the ESD protection levels of the TRS3232EIDBR?
The device offers ESD protection of ±15kV (HBM), ±8kV (IEC61000-4-2, Contact discharge), and ±15kV (IEC61000-4-2, Air-gap discharge).
- How many drivers and receivers does the TRS3232EIDBR have?
The device includes two line drivers and two line receivers.
- What is the maximum data signaling rate supported by the TRS3232EIDBR?
The device supports data signaling rates up to 250 kbps.
- What is the typical supply current of the TRS3232EIDBR?
The typical supply current is 300 μA.
- What type of packages is the TRS3232EIDBR available in?
The device is available in SOIC, SSOP, TSSOP, and QFN packages.
- Is the TRS3232EIDBR compatible with 5-V logic inputs?
Yes, it accepts 5-V logic inputs even with a 3.3-V supply.
- What are the recommended external capacitors for the TRS3232EIDBR?
The device requires four external capacitors, typically 0.1 μF each.
- What are some common applications of the TRS3232EIDBR?
Common applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, notebooks, palmtop PCs, and hand-held equipment.
- How does the TRS3232EIDBR handle unpowered conditions?
When unpowered (VCC = 0 V), the device can be safely connected to an active remote RS-232 device.
