Overview
The SN65C3221EPW is a robust, feature-rich RS-232 transceiver manufactured by Texas Instruments. This integrated circuit is designed to fulfill the requirements for serial communication in a variety of applications, ranging from telecommunications to industrial control systems. It consists of one line driver, one line receiver, and a dual charge-pump circuit, providing a reliable electrical interface between an asynchronous communication controller and the serial-port connector. The device operates with a single 3-V to 5.5-V supply and includes robust ESD protection features, making it an excellent choice for designers looking to incorporate reliable serial communication into their systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Supply | 3 V ~ 5.5 V | V |
| Number of Drivers/Receivers | 1/1 | |
| Protocol | RS232 | |
| Mounting Type | Surface Mount | |
| Package | 16-TSSOP | |
| Data Rate | Up to 1 Mbit/s | |
| Standby Current | 1 μA Typical | A |
| External Capacitors | 4 × 0.1 μF | F |
| ESD Protection | ±15-kV Human-body model (HBM), ±8-kV IEC 61000-4-2 Contact discharge, ±15-kV IEC 61000-4-2 Air-gap discharge | V |
Key Features
- Operates with 3-V to 5.5-V VCC supply
- Operates up to 1 Mbit/s data rate
- Low standby current: 1 μA typical
- External capacitors: 4 × 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- RS-232 bus-pin ESD protection exceeds ±15 kV using human-body model (HBM)
- Auto-powerdown feature automatically disables drivers for power savings
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- PDAs
- Notebooks and Laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the voltage supply range for the SN65C3221EPW? The SN65C3221EPW operates with a 3-V to 5.5-V VCC supply.
- What is the maximum data rate supported by the SN65C3221EPW? The device supports data rates up to 1 Mbit/s.
- What type of ESD protection does the SN65C3221EPW offer? The device offers ±15-kV Human-body model (HBM), ±8-kV IEC 61000-4-2 Contact discharge, and ±15-kV IEC 61000-4-2 Air-gap discharge ESD protection.
- What is the standby current of the SN65C3221EPW? The standby current is 1 μA typical.
- Does the SN65C3221EPW support 5-V logic input with a 3.3-V supply? Yes, it accepts 5-V logic input with a 3.3-V supply.
- What is the purpose of the auto-powerdown feature in the SN65C3221EPW? The auto-powerdown feature automatically disables drivers for power savings.
- In what package is the SN65C3221EPW available? The device is available in a 16-TSSOP package.
- What are the typical applications of the SN65C3221EPW? Typical applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
- Is the SN65C3221EPW RoHS compliant? Yes, the device is RoHS compliant.
- How many external capacitors are required for the SN65C3221EPW? The device requires 4 × 0.1 μF external capacitors.
