Overview
The MAX232EIDWG4, produced by Texas Instruments, is a dual RS-232 driver and receiver integrated circuit. This device is designed to meet or exceed the TIA/EIA-232-F and ITU recommendation V.28 standards. It operates from a single 5V power supply and includes a capacitive voltage generator that uses four external 1µF capacitors to generate the necessary voltage levels for RS-232 communication.
The MAX232EIDWG4 is an enhanced version of the MAX232, offering improved ESD protection and higher data rate capabilities. It is suitable for a variety of applications, including battery-powered systems, terminals, modems, and computers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 5V | V |
| Supply Current | 8 mA (typical) | mA |
| Data Rate | Up to 250 kbit/s | kbit/s |
| Input Levels | ±30 V | V |
| Output Voltage (High) | 5 to 7 V | V |
| Output Voltage (Low) | -7 to -5 V | V |
| ESD Protection (HBM) | ±15 kV | kV |
| ESD Protection (IEC61000-4-2) | ±8 kV (contact), ±15 kV (air-gap) | kV |
| Operating Temperature | -40°C to 85°C | °C |
| Package Type | SOIC (16 pins) | - |
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.
- Two drivers and two receivers for full-duplex communication.
- Low supply current: 8 mA typical.
- High ESD protection: ±15 kV Human-body model (HBM), ±8 kV and ±15 kV IEC61000-4-2 contact and air-gap discharge respectively.
- Each receiver converts RS-232 inputs to 5V TTL/CMOS levels with a typical threshold of 1.3 V and hysteresis of 0.5 V.
- Drivers convert TTL/CMOS input levels into TIA/EIA-232-F levels.
- Outputs are protected against shorts to ground.
- Open or shorted to ground input results in a high output on ROUT.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals and terminals equipment.
- Modems.
- Computers and computer peripherals.
Q & A
- What is the MAX232EIDWG4 used for?
The MAX232EIDWG4 is used as a dual RS-232 driver and receiver to convert between TTL/CMOS logic levels and RS-232 voltage levels.
- What is the operating voltage of the MAX232EIDWG4?
The MAX232EIDWG4 operates from a single 5V power supply.
- What is the maximum data rate supported by the MAX232EIDWG4?
The MAX232EIDWG4 supports data rates up to 250 kbit/s.
- What kind of ESD protection does the MAX232EIDWG4 offer?
The MAX232EIDWG4 offers ±15 kV Human-body model (HBM) and ±8 kV and ±15 kV IEC61000-4-2 contact and air-gap discharge protection respectively.
- How many drivers and receivers does the MAX232EIDWG4 have?
The MAX232EIDWG4 has two drivers and two receivers.
- What is the typical supply current of the MAX232EIDWG4?
The typical supply current of the MAX232EIDWG4 is 8 mA.
- What are the input voltage levels accepted by the receivers of the MAX232EIDWG4?
The receivers can accept input voltage levels up to ±30 V.
- What is the package type of the MAX232EIDWG4?
The MAX232EIDWG4 is available in a SOIC (16 pins) package.
- What is the operating temperature range of the MAX232EIDWG4?
The operating temperature range of the MAX232EIDWG4 is -40°C to 85°C.
- What are some common applications of the MAX232EIDWG4?
Common applications include battery-powered systems, terminals, modems, and computers.
