Overview
The MAX232EEWE+ is a dual driver/receiver integrated circuit designed by Analog Devices Inc./Maxim Integrated. This component is part of the MAX220–MAX249 family, which is intended for EIA/TIA-232E and V.28/V.24 communication interfaces. It is particularly useful in applications where ±12V power supplies are not available, making it ideal for battery-powered systems. The MAX232EEWE+ operates from a single +5V power supply and includes a capacitive voltage generator to produce the necessary voltage levels for RS-232 communication.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Type of Integrated Circuit | Interface Transceiver |
| Data Transfer Rate | 120 kbps |
| Mounting | SMD (Surface Mount Device) |
| Case | SO16-W (16-pin SOIC) |
| Number of Receivers | 2 |
| Number of Transmitters | 2 |
| Operating Temperature | -40°C to 85°C |
| DC Supply Current | 5 mA |
| ESD Protection | ±15 kV HBM (Human Body Model) |
Key Features
- Operates from a single +5V power supply with 1µF charge-pump capacitors.
- Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28 specifications.
- Includes two drivers and two receivers.
- Accepts ±30V input levels.
- Low supply current: 8 mA typical.
- High ESD protection: exceeds JESD 22 – 2000V Human-body model and upgraded to 15 kV HBM.
- No external capacitors required for some versions (e.g., MAX233).
- Low-power shutdown mode reduces power dissipation to less than 5µW.
Applications
- Battery-powered systems.
- Portable computers.
- Low-power modems.
- Interface translation.
- Multidrop RS-232 networks.
- Terminals and modems.
- Computers and other RS-232 compatible devices.
Q & A
- What is the primary function of the MAX232EEWE+?
The MAX232EEWE+ is a dual driver/receiver integrated circuit designed for RS-232 communication, converting TTL/CMOS levels to RS-232 levels and vice versa.
- What power supply does the MAX232EEWE+ require?
The MAX232EEWE+ operates from a single +5V power supply.
- What is the data transfer rate of the MAX232EEWE+?
The data transfer rate of the MAX232EEWE+ is up to 120 kbps.
- How many receivers and transmitters does the MAX232EEWE+ have?
The MAX232EEWE+ has two receivers and two transmitters.
- What is the operating temperature range of the MAX232EEWE+?
The operating temperature range is -40°C to 85°C.
- Does the MAX232EEWE+ require external capacitors?
Some versions of the MAX232 family do not require external capacitors, but the MAX232EEWE+ typically uses 1µF charge-pump capacitors.
- What level of ESD protection does the MAX232EEWE+ offer?
The MAX232EEWE+ offers high ESD protection, exceeding ±15 kV HBM (Human Body Model).
- In what types of applications is the MAX232EEWE+ commonly used?
The MAX232EEWE+ is commonly used in battery-powered systems, portable computers, low-power modems, and multidrop RS-232 networks.
- What package types are available for the MAX232EEWE+?
The MAX232EEWE+ is available in SOIC (16-pin) and other package types such as PDIP and SOP.
- Does the MAX232EEWE+ have a low-power shutdown mode?
Yes, the MAX232EEWE+ has a low-power shutdown mode that reduces power dissipation to less than 5µW.
