Overview
The MAX232DWRG4, 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 particularly useful in applications requiring the conversion of 5V TTL/CMOS signals to the higher voltage levels required by the RS-232 standard.
The MAX232DWRG4 includes a capacitive voltage generator that enables it to generate the necessary RS-232 voltage levels from a single 5V power supply, using four external 1µF capacitors. This feature makes it highly efficient and suitable for a variety of applications, including battery-powered systems and other devices where power consumption is a critical factor.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 5V | V |
| Supply Current (ICC) | 8 mA | mA |
| Operating Temperature Range | 0 to 70°C | °C |
| Data Rate | Up to 120 kbit/s | kbit/s |
| Input Levels | ±30 V | V |
| ESD Protection | 2000 V Human-body model (A114-A) | V |
| Package Type | SOIC (D) with 16 pins | |
| High-level Output Voltage (VOH) | 5 to 7 V | V |
| Low-level Output Voltage (VOL) | -7 to -5 V | V |
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.
- Supports data rates up to 120 kbit/s.
- Includes two drivers and two receivers.
- Accepts ±30V input levels.
- Low supply current: 8mA typical.
- ESD protection exceeds JESD 22 – 2000V Human-body model (A114-A).
- Upgrade with improved ESD (15kV HBM) and 0.1µF charge-pump capacitors available with the MAX202 device.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other serial communication devices.
Q & A
- What is the primary function of the MAX232DWRG4?
The MAX232DWRG4 is a dual driver/receiver that converts TTL/CMOS logic levels to RS-232 serial interface levels and vice versa.
- What is the operating voltage range for the MAX232DWRG4?
The device operates from a single 5V power supply.
- What is the maximum data rate supported by the MAX232DWRG4?
The device supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232DWRG4 have?
The device includes two drivers and two receivers.
- What level of ESD protection does the MAX232DWRG4 offer?
The device offers ESD protection exceeding JESD 22 – 2000V Human-body model (A114-A).
- What type of package is the MAX232DWRG4 available in?
The device is available in a SOIC (D) package with 16 pins.
- What are the typical input levels for the MAX232DWRG4?
The device can accept ±30V input levels.
- How much current does the MAX232DWRG4 typically consume?
The device typically consumes 8mA of supply current.
- Can the MAX232DWRG4 be used in battery-powered systems?
Yes, the MAX232DWRG4 is suitable for battery-powered systems due to its low power consumption.
- What are some common applications of the MAX232DWRG4?
Common applications include TIA/EIA-232-F compliant systems, terminals, modems, and computers.
