Overview
The MAX3221EIPWE4, produced by Texas Instruments, is a single-channel RS-232 line driver and receiver integrated circuit. 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 standards. It features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply, along with four small external capacitors. The MAX3221EIPWE4 is known for its robust ESD protection, offering ±15-kV ESD protection pin to pin, including serial-port connection pins and GND.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage Range | 3 V to 5.5 V |
| Data Signaling Rate | Up to 250 kbps |
| Driver Output Slew Rate | Maximum of 30 V/µs |
| ESD Protection | ±15 kV (Human-body model), ±8 kV and ±15 kV (IEC 61000-4-2, Contact discharge) |
| Package Type | 16-Pin TSSOP |
| Package Size | 5mm × 6.4mm |
| Power Management | Automatic power-down, manual enable/disable |
| Standards Compliance | TIA/EIA-232-F |
| RoHS Compliance | Yes |
Key Features
- Dual charge-pump circuit for single-supply operation from 3 V to 5.5 V.
- One line driver and one line receiver with dedicated enable pin.
- Robust ESD protection: ±15 kV (Human-body model), ±8 kV and ±15 kV (IEC 61000-4-2, Contact discharge).
- Automatic power-down feature to reduce supply current to 1 µA when the serial port is inactive.
- Manual enable/disable options for the driver and receiver.
- INVALID output to notify if an RS-232 signal is present at the receiver input.
Applications
- Asynchronous communication systems.
- Serial-port interfaces in industrial and commercial equipment.
- Point-of-sale terminals and other serial communication devices.
- Embedded systems requiring RS-232 communication.
Q & A
- What is the supply voltage range for the MAX3221EIPWE4?
The supply voltage range is from 3 V to 5.5 V.
- What is the maximum data signaling rate supported by the MAX3221EIPWE4?
The maximum data signaling rate is up to 250 kbps.
- What level of ESD protection does the MAX3221EIPWE4 offer?
The device offers ±15 kV ESD protection (Human-body model), ±8 kV and ±15 kV (IEC 61000-4-2, Contact discharge).
- What is the package type and size of the MAX3221EIPWE4?
The package type is 16-Pin TSSOP, and the package size is 5mm × 6.4mm.
- Does the MAX3221EIPWE4 support automatic power-down?
Yes, it supports automatic power-down to reduce supply current to 1 µA when the serial port is inactive.
- What standards does the MAX3221EIPWE4 comply with?
The device complies with TIA/EIA-232-F standards.
- Is the MAX3221EIPWE4 RoHS compliant?
Yes, it is RoHS compliant.
- What is the purpose of the INVALID output on the MAX3221EIPWE4?
The INVALID output notifies the user if an RS-232 signal is present at the receiver input.
- Can the driver and receiver be manually enabled or disabled on the MAX3221EIPWE4?
Yes, the driver and receiver can be manually enabled or disabled.
- What are some common applications for the MAX3221EIPWE4?
Common applications include asynchronous communication systems, serial-port interfaces in industrial and commercial equipment, point-of-sale terminals, and embedded systems requiring RS-232 communication.
