Overview
The MAX232AEJE, produced by Analog Devices Inc./Maxim Integrated, is a dual driver/receiver integrated circuit designed to facilitate communication between devices using the RS-232 protocol. This IC is particularly useful in applications where a single 5V power supply is available, and it does not require the traditional ±12V supply voltages needed for RS-232 communication.
The MAX232AEJE includes a capacitive voltage generator that uses four external capacitors to generate the necessary voltage levels for RS-232 communication. It converts TTL/CMOS signal levels to RS-232 and vice versa, enabling seamless communication between devices with different voltage requirements.
Key Specifications
| Specification | Description |
|---|---|
| Number of Drivers/Receivers | 2/2 |
| Protocol | RS232 |
| Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature | 0°C to 70°C |
| Data Rate | 120 kbps |
| Input Levels | ±30 V |
| Package Type | 16-pin SOIC |
| ESD Protection | 2000 V Human Body Model (HBM) |
| Operating Current | 8 mA typical |
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.
- Supports data rates up to 120 kbps.
- Includes two drivers and two receivers.
- Low supply current: 8 mA typical.
- ESD protection exceeds JESD 22 – 2000 V Human-body model (HBM).
- Converts TTL/CMOS signal levels to RS-232 and vice versa.
- Receiver hysteresis of 500 mV.
Applications
- TIA/EIA-232-F interfaces.
- Battery-powered systems.
- Terminals and modems.
- Computers and portable computers.
- Low-power modems and multidrop RS-232 networks.
- Interface translation and battery-powered RS-232 systems.
Q & A
- What is the primary function of the MAX232AEJE IC?
The MAX232AEJE IC is designed to convert TTL/CMOS signal levels to RS-232 and vice versa, enabling communication between devices with different voltage requirements.
- What is the operating voltage range of the MAX232AEJE?
The MAX232AEJE operates from a supply voltage of 4.5 V to 5.5 V.
- What is the maximum data rate supported by the MAX232AEJE?
The MAX232AEJE supports data rates up to 120 kbps.
- How many drivers and receivers does the MAX232AEJE have?
The MAX232AEJE has two drivers and two receivers.
- What type of ESD protection does the MAX232AEJE offer?
The MAX232AEJE offers ESD protection exceeding 2000 V Human Body Model (HBM).
- What are the typical operating current and temperature range of the MAX232AEJE?
The typical operating current is 8 mA, and the operating temperature range is from 0°C to 70°C.
- What kind of capacitors are required for the MAX232AEJE to function?
The MAX232AEJE requires four external 1µF charge-pump capacitors.
- What are some common applications of the MAX232AEJE?
Common applications include TIA/EIA-232-F interfaces, battery-powered systems, terminals, modems, and computers.
- Does the MAX232AEJE meet any specific communication standards?
Yes, it meets or exceeds TIA/EIA-232-F and ITU recommendation V.28 specifications.
- What is the package type of the MAX232AEJE?
The MAX232AEJE is available in a 16-pin SOIC package.
