Overview
The MAX232EIDRG4, produced by Texas Instruments, is a dual RS-232 driver and receiver integrated circuit. This device is designed to meet or exceed the TIA/RS-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 1µF external capacitors to generate the necessary voltage levels for RS-232 communication. The MAX232EIDRG4 is particularly notable for its enhanced ESD protection and its ability to convert TTL/CMOS logic levels to RS-232 levels and vice versa.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage | 5V | V |
| Supply Current | 8 mA | 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 Contact Discharge) | ±8 kV | kV |
| ESD Protection (IEC61000-4-2 Air-Gap Discharge) | ±15 kV | kV |
| Operating Temperature Range | 0 to 70 °C | °C |
| Package Type | SOIC (16 pins) | - |
Key Features
- Meets or exceeds TIA/RS-232-F and ITU recommendation V.28 standards.
- Operates from a single 5V power supply with 1µF charge-pump capacitors.
- Supports data rates up to 250 kbit/s.
- Includes two drivers and two receivers.
- Accepts ±30V input levels.
- Low supply current: 8 mA typical.
- Enhanced ESD protection: ±15 kV HBM, ±8 kV IEC61000-4-2 contact discharge, and ±15 kV IEC61000-4-2 air-gap discharge.
- Outputs are protected against shorts to ground.
- Each receiver has a typical threshold of 1.3 V and a typical hysteresis of 0.5 V.
Applications
- TIA/RS-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other RS-232 compatible devices.
Q & A
- What is the MAX232EIDRG4 used for?
The MAX232EIDRG4 is used as a dual RS-232 driver and receiver to convert TTL/CMOS logic levels to RS-232 levels and vice versa.
- What is the operating voltage of the MAX232EIDRG4?
The MAX232EIDRG4 operates from a single 5V power supply.
- What is the maximum data rate supported by the MAX232EIDRG4?
The MAX232EIDRG4 supports data rates up to 250 kbit/s.
- What kind of ESD protection does the MAX232EIDRG4 offer?
The MAX232EIDRG4 offers ±15 kV HBM, ±8 kV IEC61000-4-2 contact discharge, and ±15 kV IEC61000-4-2 air-gap discharge ESD protection.
- What are the typical input and output voltage levels for the MAX232EIDRG4?
The typical input levels are ±30 V, and the output voltage levels are 5 to 7 V for high and -7 to -5 V for low.
- What is the typical supply current of the MAX232EIDRG4?
The typical supply current is 8 mA.
- What types of applications is the MAX232EIDRG4 suitable for?
The MAX232EIDRG4 is suitable for TIA/RS-232-F compliant systems, battery-powered systems, terminals, modems, and computers.
- What is the operating temperature range of the MAX232EIDRG4?
The operating temperature range is 0 to 70 °C.
- What package types are available for the MAX232EIDRG4?
The MAX232EIDRG4 is available in SOIC (16 pins) package.
- Does the MAX232EIDRG4 have any fail-safe features for the receivers?
Yes, the receivers have shorted and open fail-safe features, resulting in a high output on ROUT in such cases.
