Overview
The MAX232DG4, produced by Texas Instruments, is a dual driver/receiver integrated circuit designed to convert TTL/CMOS logic levels to RS232 voltage levels and vice versa. This device is particularly useful in applications requiring serial communication over RS232 interfaces. It operates from a single 5V power supply and includes a capacitive voltage generator to produce the necessary RS232 voltage levels.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Supply Voltage | Range of the supply voltage | 4.5V to 5.5V |
| Operating Temperature | Range of operating temperature | 0°C to 70°C |
| Data Rate | Maximum data transfer rate | Up to 120 kbit/s |
| Number of Drivers/Receivers | Number of drivers and receivers on the chip | 2 drivers, 2 receivers |
| Input Levels | Acceptable input voltage levels | ±30V |
| Supply Current | Typical supply current | 8 mA |
| ESD Protection | Electrostatic discharge protection level | Exceeds JESD 22 – 2000V Human-body model (A114-A) |
| Package Type | Type of package | 16-SOIC (0.154", 3.90mm Width) |
| Receiver Hysteresis | Hysteresis of the receiver | 500mV |
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 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).
- Each receiver converts TIA/EIA-232-F inputs to 5V TTL/CMOS levels with a typical threshold of 1.3 V and a typical hysteresis of 0.5 V.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals.
- Modems.
- Computers.
Q & A
- What is the MAX232DG4 used for?
The MAX232DG4 is used to convert TTL/CMOS logic levels to RS232 voltage levels and vice versa, enabling serial communication over RS232 interfaces.
- What is the operating voltage range of the MAX232DG4?
The operating voltage range is 4.5V to 5.5V.
- What is the maximum data rate supported by the MAX232DG4?
The MAX232DG4 supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232DG4 have?
The MAX232DG4 has two drivers and two receivers.
- What is the typical supply current of the MAX232DG4?
The typical supply current is 8 mA.
- What level of ESD protection does the MAX232DG4 offer?
The MAX232DG4 offers ESD protection that exceeds JESD 22 – 2000V Human-body model (A114-A).
- What type of package does the MAX232DG4 come in?
The MAX232DG4 comes in a 16-SOIC package.
- What are some common applications of the MAX232DG4?
Common applications include TIA/EIA-232-F compliant systems, battery-powered systems, terminals, modems, and computers.
- How does the MAX232DG4 handle input voltage levels?
The MAX232DG4 can accept ±30V input levels.
- What is the hysteresis of the receivers in the MAX232DG4?
The receivers have a typical hysteresis of 0.5 V.
