Overview
The MAX232EIN, produced by Texas Instruments, is a dual driver/receiver integrated circuit designed to facilitate communication between TTL/CMOS logic levels and RS-232 serial interface levels. This device is part of the MAX232 family, known for its capability to operate from a single 5V power supply and generate the necessary voltage levels for RS-232 communication using an integrated charge pump circuit.
The MAX232EIN is an enhanced version of the MAX232, offering improved ESD protection and other advanced features. It is widely used in various applications requiring reliable and efficient serial communication.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Supply Voltage | 4.5 to 5.5 | V |
| Operating Temperature Range | -40 to 85 | °C |
| Data Rate | Up to 250 kbit/s | |
| Number of Drivers/Receivers | 2 Drivers, 2 Receivers | |
| Input Voltage Range | ±30 V | |
| Supply Current | 8 mA (typical) | |
| ESD Protection | ±15 kV Human-body model (HBM), ±8 kV IEC61000-4-2 Contact discharge, ±15 kV IEC61000-4-2 Air-gap discharge | |
| Package Types | PDIP (16), SOIC (16), SOP (16) |
Key Features
- Meets or exceeds TIA/EIA-232-F and ITU recommendation V.28 standards.
- Operates from a single 5V power supply with 1µF charge-pump capacitors.
- Includes a capacitive voltage generator to supply RS-232 voltage levels.
- Each receiver converts RS-232 inputs to 5V TTL/CMOS levels with a typical threshold of 1.3V and hysteresis of 0.5V.
- Accepts ±30V input levels.
- Low supply current: 8mA typical.
- Enhanced ESD protection: ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 Contact discharge, and ±15kV IEC61000-4-2 Air-gap discharge.
Applications
- TIA/EIA-232-F serial communication interfaces.
- Battery-powered systems.
- Terminals and modems.
- Computers and peripheral devices.
Q & A
- What is the MAX232EIN used for?
The MAX232EIN is used to convert TTL/CMOS logic levels to RS-232 serial interface levels and vice versa.
- What is the operating voltage range of the MAX232EIN?
The MAX232EIN operates from a single 5V power supply with a voltage range of 4.5V to 5.5V.
- What is the maximum data rate supported by the MAX232EIN?
The MAX232EIN supports data rates up to 250 kbit/s.
- How many drivers and receivers does the MAX232EIN have?
The MAX232EIN has two drivers and two receivers.
- What is the input voltage range for the MAX232EIN receivers?
The receivers can accept input voltages ranging from ±30V.
- What kind of ESD protection does the MAX232EIN offer?
The MAX232EIN offers ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 Contact discharge, and ±15kV IEC61000-4-2 Air-gap discharge ESD protection.
- What are the typical applications of the MAX232EIN?
Typical applications include TIA/EIA-232-F serial communication interfaces, battery-powered systems, terminals, modems, and computers.
- What package types are available for the MAX232EIN?
The MAX232EIN is available in PDIP (16), SOIC (16), and SOP (16) package types.
- Is the MAX232EIN still in production?
While the specific status of the MAX232EIN can vary, it is part of the MAX232 family, some of which may be obsolete or recommended for new designs. Always check the latest production status from Texas Instruments.
- How does the MAX232EIN handle high input voltages?
The MAX232EIN can handle input voltages up to ±30V and has built-in ESD protection to safeguard against electrostatic discharge.
