Overview
The MAX232ECPW, 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 is particularly useful for converting TTL/CMOS logic levels to RS-232 levels and vice versa, making it a crucial component in various communication systems. The MAX232ECPW operates from a single 5V power supply and includes a capacitive voltage generator that requires four external 1µF capacitors to generate the necessary RS-232 voltage levels.
Key Specifications
| Parameter | Value |
|---|---|
| Power Supply | Single 5V |
| Charge-Pump Capacitors | Four 1µF external capacitors |
| Data Rate | Up to 250kbit/s |
| Drivers/Receivers | Two drivers and two receivers |
| Input Levels | ±30V |
| Supply Current | 8mA typical |
| ESD Protection | ±15kV Human-body model (HBM), ±8kV IEC61000-4-2 contact discharge, ±15kV IEC61000-4-2 air-gap discharge |
| Operating Temperature | -40°C to 85°C |
| Package Types | PDIP, SOIC, SOP |
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.
- Two drivers and two receivers for bidirectional communication.
- Low supply current: 8mA typical.
- ESD protection for RS-232 bus pins: ±15kV 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/RS-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other communication devices.
Q & A
- What is the MAX232ECPW used for? The MAX232ECPW is used to convert TTL/CMOS logic levels to RS-232 levels and vice versa, making it suitable for various communication systems.
- What is the power supply requirement for the MAX232ECPW? The MAX232ECPW operates from a single 5V power supply.
- How many charge-pump capacitors are required for the MAX232ECPW? Four external 1µF capacitors are required.
- What is the maximum data rate supported by the MAX232ECPW? The MAX232ECPW supports data rates up to 250kbit/s.
- How many drivers and receivers does the MAX232ECPW have? The MAX232ECPW has two drivers and two receivers.
- What level of ESD protection does the MAX232ECPW offer? The MAX232ECPW offers ±15kV HBM, ±8kV IEC61000-4-2 contact discharge, and ±15kV IEC61000-4-2 air-gap discharge ESD protection.
- What are the typical input levels for the MAX232ECPW? The MAX232ECPW can accept input levels of ±30V.
- What is the typical supply current of the MAX232ECPW? The typical supply current is 8mA.
- What are the operating temperature ranges for the MAX232ECPW? The operating temperature range is -40°C to 85°C.
- What package types are available for the MAX232ECPW? The MAX232ECPW is available in PDIP, SOIC, and SOP package types.
