Overview
The MAX232BAWE+ is an integrated circuit produced by Analog Devices Inc./Maxim Integrated, designed to convert signals between TIA-232 (RS-232) serial ports and TTL-compatible digital logic circuits. This dual driver/receiver IC is particularly useful in systems where ±12V power is not available, as it operates from a single 5V power supply using on-chip charge pumps and external capacitors.
The MAX232BAWE+ is part of the MAX232 family, which has been widely adopted for its efficiency and versatility in various communication interfaces. It is backward compatible with the original MAX232 and offers enhanced features such as improved ESD protection and the ability to use smaller external capacitors.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Power Supply | Single 5V power supply | 4.5V to 5.5V |
| Charge-Pump Capacitors | External capacitors required | 1.0µF (or 0.1µF for MAX232A) |
| Data Rate | Maximum data transfer rate | Up to 120 kbit/s |
| Drivers/Receivers | Number of drivers and receivers | Two drivers, two receivers |
| Input Levels | RS-232 input voltage range | ±30V |
| Supply Current | Typical supply current | 8 mA |
| ESD Protection | Electrostatic discharge protection | Exceeds JESD 22 – 2000V Human-Body Model (A114-A) |
| Package | Package type | 16-pin SOIC |
Key Features
- Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28 standards.
- Operates from a single 5V power supply with on-chip charge pumps and external capacitors.
- Supports data rates up to 120 kbit/s.
- Includes two drivers and two receivers.
- Accepts ±30V input levels and provides low supply current (typical 8 mA).
- Offers ESD protection exceeding JESD 22 – 2000V Human-Body Model (A114-A).
- Backward compatible with the original MAX232, with options for higher baud rates and smaller capacitors in the MAX232A version.
Applications
- TIA/EIA-232-F interfaces.
- Battery-powered systems, such as portable computers and low-power modems.
- Terminals and modems.
- Computers and other serial communication devices.
- Multidrop RS-232 networks.
Q & A
- What is the primary function of the MAX232BAWE+ IC?
The MAX232BAWE+ is a dual driver/receiver that converts signals between TIA-232 (RS-232) serial ports and TTL-compatible digital logic circuits.
- What power supply does the MAX232BAWE+ require?
The MAX232BAWE+ operates from a single 5V power supply.
- What are the external capacitors required for the MAX232BAWE+?
The MAX232BAWE+ requires 1.0µF external charge-pump capacitors (or 0.1µF for the MAX232A version).
- What is the maximum data rate supported by the MAX232BAWE+?
The MAX232BAWE+ supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232BAWE+ have?
The MAX232BAWE+ includes two drivers and two receivers.
- What is the input voltage range for the RS-232 signals?
The input voltage range for RS-232 signals is ±30V.
- What is the typical supply current of the MAX232BAWE+?
The typical supply current is 8 mA.
- What level of ESD protection does the MAX232BAWE+ offer?
The MAX232BAWE+ offers ESD protection exceeding JESD 22 – 2000V Human-Body Model (A114-A).
- In what types of systems is the MAX232BAWE+ commonly used?
The MAX232BAWE+ is commonly used in battery-powered systems, terminals, modems, computers, and multidrop RS-232 networks.
- Is the MAX232BAWE+ backward compatible with the original MAX232?
Yes, the MAX232BAWE+ is backward compatible with the original MAX232 and offers additional features such as higher baud rates and the ability to use smaller capacitors in the MAX232A version.
