Overview
The MAX232DRG4, produced by Texas Instruments, is a dual driver/receiver integrated circuit designed to convert TTL/CMOS logic levels to RS-232 levels and vice versa. This device includes a capacitive voltage generator that allows it to operate from a single 5V power supply, making it highly versatile for various applications. The MAX232DRG4 is widely used in systems that require communication over RS-232 interfaces, such as modems, terminals, and computers.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Power Supply | Single 5V power supply | 4.5V to 5.5V |
| Charge-Pump Capacitors | External capacitors required | 1.0 µF each |
| Data Rate | Maximum data rate | Up to 120 kbit/s |
| Drivers/Receivers | Number of drivers and receivers | Two drivers and two receivers |
| Input Levels | Acceptable input voltage range | ±30V |
| Supply Current | Typical supply current | 8 mA |
| ESD Protection | Human-body model ESD protection | 2000V (JESD 22 – A114-A) |
| Package Type | Available package types | SOIC (16), PDIP (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 1.0 µF charge-pump capacitors.
- Supports data rates up to 120 kbit/s.
- Includes two drivers and two receivers.
- Accepts ±30V input levels.
- Low supply current: 8 mA typical.
- ESD protection exceeds JESD 22 – 2000V Human-body model (A114-A).
- Upgrade with improved ESD (15kV HBM) and 0.1 µF charge-pump capacitors available with the MAX202 device.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other RS-232 interfaced devices.
Q & A
- What is the MAX232DRG4 used for?
The MAX232DRG4 is used to convert TTL/CMOS logic levels to RS-232 levels and vice versa, enabling communication over RS-232 interfaces.
- What power supply does the MAX232DRG4 require?
The MAX232DRG4 operates from a single 5V power supply.
- What are the charge-pump capacitor requirements for the MAX232DRG4?
The device requires four 1.0 µF external charge-pump capacitors.
- What is the maximum data rate supported by the MAX232DRG4?
The MAX232DRG4 supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232DRG4 have?
The MAX232DRG4 includes two drivers and two receivers.
- What is the acceptable input voltage range for the MAX232DRG4?
The device can accept input voltage levels of ±30V.
- What is the typical supply current of the MAX232DRG4?
The typical supply current is 8 mA.
- What level of ESD protection does the MAX232DRG4 offer?
The device offers ESD protection exceeding JESD 22 – 2000V Human-body model (A114-A).
- What are the available package types for the MAX232DRG4?
The device is available in SOIC (16), PDIP (16), and SOP (16) packages.
- Can the MAX232DRG4 be upgraded for better ESD protection?
Yes, an upgrade with improved ESD (15kV HBM) and 0.1 µF charge-pump capacitors is available with the MAX202 device.
