Overview
The TRSF3221EIPWRG4, produced by Texas Instruments, is a single-channel RS-232 line driver/receiver integrated circuit. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It features a dual charge-pump circuit and offers robust ESD protection for RS-232 pins. The TRSF3221E operates with a single 3-V to 5.5-V supply and supports data signaling rates up to 1 Mbit/s, making it suitable for a variety of applications requiring reliable serial communication.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | TSSOP (PW) | - |
| Pins | 16 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage (VCC) | 3.0 to 5.5 | V |
| Data Signaling Rate | Up to 1 Mbit/s | - |
| Driver Output Slew Rate | 24 V/μs to 150 V/μs | - |
| ESD Protection | ±15 kV HBM, ±8 kV IEC 61000-4-2 Contact Discharge, ±15 kV IEC 61000-4-2 Air-Gap Discharge | - |
| Standby Current | 1 μA typical | - |
| External Capacitors | 4 × 0.1 μF | - |
Key Features
- ESD protection for RS-232 pins: ±15 kV Human-body model (HBM), ±8 kV IEC 61000-4-2 Contact discharge, and ±15 kV IEC 61000-4-2 Air-gap discharge.
- Operates with a single 3-V to 5.5-V supply.
- Supports data signaling rates up to 1 Mbit/s.
- Available in near chip-scale package, 16-pin VQFN (RGT), which is 82% smaller than the TSSOP package.
- Low standby current: 1 μA typical.
- External capacitors: 4 × 0.1 μF.
- Accepts 5-V logic input with a 3.3-V supply.
- Auto-powerdown feature automatically disables drivers for power savings.
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- PDAs and palmtop PCs
- Notebooks, sub-notebooks, and laptops
- Digital cameras
- Mobile phones and wireless devices
- Hand-held equipment
Q & A
- What is the primary function of the TRSF3221E?
The TRSF3221E provides the electrical interface between an asynchronous communication controller and the serial-port connector.
- What is the operating voltage range of the TRSF3221E?
The TRSF3221E operates with a single 3-V to 5.5-V supply.
- What are the ESD protection levels of the TRSF3221E?
The TRSF3221E offers ±15 kV HBM, ±8 kV IEC 61000-4-2 Contact discharge, and ±15 kV IEC 61000-4-2 Air-gap discharge ESD protection.
- What is the maximum data signaling rate supported by the TRSF3221E?
The TRSF3221E supports data signaling rates up to 1 Mbit/s.
- What is the typical standby current of the TRSF3221E?
The typical standby current is 1 μA.
- What type of packages is the TRSF3221E available in?
The TRSF3221E is available in 16-pin TSSOP and near chip-scale 16-pin VQFN (RGT) packages.
- Does the TRSF3221E support 5-V logic input with a 3.3-V supply?
Yes, the TRSF3221E accepts 5-V logic input with a 3.3-V supply.
- What is the auto-powerdown feature of the TRSF3221E?
The auto-powerdown feature automatically disables drivers for power savings when the serial port is inactive.
- What are some common applications of the TRSF3221E?
Common applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, and hand-held equipment.
- What is the operating temperature range of the TRSF3221E?
The operating temperature range is -40°C to 85°C.
