Overview
The MAX232ECDW, produced by Texas Instruments, is a dual RS-232 driver and receiver integrated circuit. It is designed to meet or exceed the TIA/RS-232-F and ITU recommendation V.28 standards. This device includes a capacitive voltage generator that allows it to supply RS-232 compliant voltage levels from a single 5V power supply. The MAX232ECDW is particularly notable for its enhanced ESD protection and its ability to operate in various applications requiring serial communication.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC Input Supply Voltage | 4.5 to 5.5 | V |
| VS+ Positive Output Supply Voltage | VCC - 0.3 to 15 | V |
| VS- Negative Output Supply Voltage | -0.3 to -15 | V |
| VI Input Voltage (Driver) | -0.3 to VCC + 0.3 | V |
| VI Input Voltage (Receiver) | ±30 | V |
| VO Output Voltage | VS- - 0.3 to VS+ + 0.3 | V |
| Operating Free-Air Temperature | 0 to 70 | °C |
| Storage Temperature | -65 to 150 | °C |
| Data Rate | Up to 250 kbit/s | |
| ESD Protection (HBM) | ±15 kV | |
| ESD Protection (IEC61000-4-2 Contact Discharge) | ±8 kV | |
| ESD Protection (IEC61000-4-2 Air-Gap Discharge) | ±15 kV | |
| Supply Current | 8 mA (typical) |
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.
- Includes two drivers and two receivers.
- Accepts ±30V input levels and converts RS-232 inputs to 5V TTL/CMOS levels.
- Enhanced ESD protection: ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 contact discharge, and ±15kV IEC61000-4-2 air-gap discharge.
- Low supply current: 8mA typical.
- Operates up to 250kbit/s data rate.
- Shorted and open fail-safe receivers.
Applications
- TIA/RS-232-F compliant systems.
- Battery-powered systems.
- Terminals.
- Modems.
- Computers.
Q & A
- What is the MAX232ECDW used for?
The MAX232ECDW 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 range of the MAX232ECDW?
The MAX232ECDW operates from a single 5V power supply.
- What is the data rate capability of the MAX232ECDW?
The MAX232ECDW can operate up to 250 kbit/s.
- What kind of ESD protection does the MAX232ECDW offer?
The MAX232ECDW offers ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 contact discharge, and ±15kV IEC61000-4-2 air-gap discharge ESD protection.
- How many drivers and receivers does the MAX232ECDW have?
The MAX232ECDW includes two drivers and two receivers.
- What is the typical supply current of the MAX232ECDW?
The typical supply current is 8mA.
- Can the MAX232ECDW handle high input voltages?
Yes, the receivers can accept up to ±30V input levels.
- What are the common applications of the MAX232ECDW?
Common applications include battery-powered systems, terminals, modems, and computers.
- Does the MAX232ECDW have fail-safe receivers?
Yes, the receivers have shorted and open fail-safe features.
- What is the operating temperature range of the MAX232ECDW?
The operating temperature range is from 0°C to 70°C.
