Overview
The MAX232IN, produced by Texas Instruments, is a dual EIA-232 driver and receiver integrated circuit. This device is designed to facilitate communication between TTL/CMOS logic levels and the EIA-232-F standard used in serial communication interfaces. The MAX232IN operates from a single 5V power supply and includes a capacitive voltage generator to produce the necessary voltage levels for EIA-232-F compliance.
Key Specifications
| Specification | Value |
|---|---|
| Power Supply Voltage | 5V (4.5V to 5.5V) |
| Operating Temperature Range | 0°C to 70°C |
| Data Rate | Up to 120 kbit/s |
| Number of Drivers and Receivers | Two drivers and two receivers |
| Input Voltage Levels | ±30V |
| Supply Current | 8mA typical |
| ESD Protection | Exceeds JESD 22 – 2000V Human-body model (A114-A) |
| Package Types | PDIP (16 pins), SOIC (16 pins), SOP (16 pins) |
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).
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals and modems.
- Computers and other serial communication devices.
Q & A
- What is the MAX232IN used for?
The MAX232IN is used to convert TTL/CMOS logic levels to EIA-232-F levels and vice versa, facilitating serial communication between devices.
- What is the operating voltage of the MAX232IN?
The MAX232IN operates from a single 5V power supply (with a range of 4.5V to 5.5V).
- What is the maximum data rate supported by the MAX232IN?
The MAX232IN supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232IN have?
The MAX232IN includes two drivers and two receivers.
- What is the input voltage level tolerance of the MAX232IN?
The MAX232IN can accept input voltage levels of ±30V.
- What is the typical supply current of the MAX232IN?
The typical supply current of the MAX232IN is 8mA.
- Does the MAX232IN have ESD protection?
Yes, the MAX232IN has ESD protection that exceeds JESD 22 – 2000V Human-body model (A114-A).
- What are the available package types for the MAX232IN?
The MAX232IN is available in PDIP, SOIC, and SOP packages with 16 pins.
- What are some common applications of the MAX232IN?
Common applications include TIA/EIA-232-F compliant systems, battery-powered systems, terminals, modems, and computers.
- Can the MAX232IN be upgraded for better ESD protection?
Yes, an upgrade with improved ESD (15kV HBM) and 0.1µF charge-pump capacitors is available with the MAX202 device.
