Overview
The MAX3221ECPWR is a single-channel RS-232 line driver and receiver produced by Texas Instruments. This device operates from a single VCC supply ranging from 3V to 5.5V and is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards, ensuring compliance with RS-232 specifications. The MAX3221ECPWR features a charge pump and requires four small external capacitors for operation, enabling it to handle data signaling rates up to 250 kbps and a maximum driver output slew rate of 30 V/µs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 3 to 5.5 | V |
| Operating Temperature Range | 0 to 70 | °C |
| Data Signaling Rate | Up to 250 | kbps |
| Driver Output Slew Rate | 30 | V/µs |
| ESD Protection (Human Body Model) | ±15 kV | V |
| ESD Protection (IEC 61000-4-2 Contact Discharge) | ±8 kV | V |
| ESD Protection (IEC 61000-4-2 Air-Gap Discharge) | ±15 kV | V |
| Standby Current | 1 µA (typical) | µA |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 16 | - |
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).
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- Operates with a single VCC supply from 3V to 5.5V.
- Supports data signaling rates up to 250 kbps.
- Includes one driver and one receiver.
- Low standby current: 1 µA typical.
- Accepts 5V logic input with a 3.3V supply.
- Auto-power-down feature automatically disables drivers for power savings.
- Alternative high-speed devices available: SN75C3221E and SN65C3221E.
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 operating voltage range of the MAX3221ECPWR? The MAX3221ECPWR operates from a single VCC supply ranging from 3V to 5.5V.
- What are the data signaling rates supported by the MAX3221ECPWR? The device supports data signaling rates up to 250 kbps.
- What kind of ESD protection does the MAX3221ECPWR offer? The device provides ESD protection of ±15 kV Human Body Model (HBM), ±8 kV (IEC 61000-4-2 Contact discharge), and ±15 kV (IEC 61000-4-2 Air-gap discharge).
- Does the MAX3221ECPWR meet RS-232 standards? Yes, it meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- What is the standby current of the MAX3221ECPWR? The standby current is 1 µA typical.
- Can the MAX3221ECPWR accept 5V logic input with a 3.3V supply? Yes, it can accept 5V logic input with a 3.3V supply.
- What is the auto-power-down feature of the MAX3221ECPWR? The auto-power-down feature automatically disables drivers for power savings when the receiver is disconnected or the remote driver is powered down.
- What are the alternative high-speed devices for the MAX3221ECPWR? The alternative high-speed devices are SN75C3221E and SN65C3221E.
- What are some common applications of the MAX3221ECPWR? Common applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
- What package types are available for the MAX3221ECPWR? The device is available in TSSOP (PW), SSOP (DB), and SOT-23-THN (DYY) packages.
