Overview
The MAX232ECDWRG4, 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 utilizes a capacitive voltage generator to produce the necessary voltage levels for RS-232 communication. The MAX232ECDWRG4 is particularly notable for its enhanced ESD protection and high data rate capabilities, making it suitable for a variety of applications requiring reliable serial communication.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 5 | V |
| Supply Current (Typical) | 8 | mA |
| Data Rate | Up to 250 | kbit/s |
| Number of Drivers/Receivers | 2 Drivers, 2 Receivers | |
| Input Levels | ±30 V | |
| ESD Protection (HBM) | ±15 kV | |
| ESD Protection (IEC61000-4-2) | ±8 kV (Contact), ±15 kV (Air-Gap) | |
| Charge-Pump Capacitors | 4 x 1 µF |
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 250 kbit/s.
- Includes two drivers and two receivers.
- Accepts ±30V input levels.
- Low supply current: 8mA typical.
- Enhanced ESD protection: ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 contact discharge, and ±15kV IEC61000-4-2 air-gap discharge.
- Each receiver converts RS-232 inputs to 5V TTL/CMOS levels with a typical threshold of 1.3V and hysteresis of 0.5V.
- Outputs are protected against shorts to ground.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other serial communication devices.
Q & A
- What is the MAX232ECDWRG4 used for?
The MAX232ECDWRG4 is used for converting TTL/CMOS logic levels to RS-232 levels and vice versa, enabling serial communication between devices.
- What is the operating voltage of the MAX232ECDWRG4?
The MAX232ECDWRG4 operates from a single 5V power supply.
- What is the maximum data rate supported by the MAX232ECDWRG4?
The MAX232ECDWRG4 supports data rates up to 250 kbit/s.
- How many drivers and receivers does the MAX232ECDWRG4 have?
The MAX232ECDWRG4 includes two drivers and two receivers.
- What level of ESD protection does the MAX232ECDWRG4 offer?
The MAX232ECDWRG4 offers ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 contact discharge, and ±15kV IEC61000-4-2 air-gap discharge ESD protection.
- What type of capacitors are required for the charge pump in the MAX232ECDWRG4?
The MAX232ECDWRG4 requires four 1µF charge-pump capacitors.
- What are the typical input and output levels for the receivers in the MAX232ECDWRG4?
The receivers can accept ±30V inputs and convert them to 5V TTL/CMOS levels with a typical threshold of 1.3V and hysteresis of 0.5V.
- Are the outputs of the MAX232ECDWRG4 protected against shorts to ground?
- What are some common applications of the MAX232ECDWRG4?
- How does the MAX232ECDWRG4 handle open or shorted inputs?
