Overview
The MAX232ECDWR is a dual RS-232 driver and receiver produced by Texas Instruments. This component is designed to meet or exceed the TIA/RS-232-F and ITU recommendation V.28 standards. It operates from a single 5V power supply and includes a capacitive voltage generator to supply the necessary voltage levels for RS-232 communication. The MAX232ECDWR is notable for its enhanced ESD protection and compatibility with a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VCC) | 4.5 - 5.5 | V |
| Operating Temperature (TA) | 0 - 70 | °C |
| Number of Drivers | 2 | - |
| Number of Receivers | 2 | - |
| Transmission Speed | Up to 250 kbit/s | - |
| Propagation Time | 500 ns | - |
| ESD Protection | ±15 kV HBM, ±8 kV IEC61000-4-2 Contact Discharge, ±15 kV IEC61000-4-2 Air-Gap Discharge | - |
| Input Voltage Range (Receiver) | ±30 V | - |
| 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 a capacitive voltage generator to supply RS-232-F compliant voltage levels.
- Enhanced ESD protection: ±15 kV Human-body model (HBM), ±8 kV IEC61000-4-2 Contact Discharge, and ±15 kV IEC61000-4-2 Air-Gap Discharge.
- Two drivers and two receivers.
- Low supply current: 8 mA typical.
- Receivers convert RS-232 inputs to 5V TTL/CMOS levels with a typical threshold of 1.3 V and hysteresis of 0.5 V.
- Shorted and open fail-safe for receivers.
Applications
- Battery-powered systems.
- Terminals.
- Modems.
- Computers.
- Any system requiring RS-232 communication.
Q & A
- What is the operating voltage range of the MAX232ECDWR?
The MAX232ECDWR operates from a single 5V power supply with a voltage range of 4.5V to 5.5V.
- What are the ESD protection levels of the MAX232ECDWR?
The MAX232ECDWR has ESD protection levels of ±15 kV HBM, ±8 kV IEC61000-4-2 Contact Discharge, and ±15 kV IEC61000-4-2 Air-Gap Discharge.
- How many drivers and receivers does the MAX232ECDWR have?
The MAX232ECDWR has two drivers and two receivers.
- What is the maximum transmission speed of the MAX232ECDWR?
The MAX232ECDWR can operate up to 250 kbit/s.
- What is the typical supply current of the MAX232ECDWR?
The typical supply current is 8 mA.
- What are the input voltage levels that the receivers can accept?
The receivers can accept input voltage levels up to ±30 V.
- Does the MAX232ECDWR have fail-safe features for the receivers?
Yes, the receivers have shorted and open fail-safe features.
- What is the propagation time of the MAX232ECDWR?
The propagation time is 500 ns.
- What are some common applications of the MAX232ECDWR?
Common applications include battery-powered systems, terminals, modems, and computers.
- What standards does the MAX232ECDWR comply with?
The MAX232ECDWR meets or exceeds TIA/RS-232-F and ITU recommendation V.28 standards.
