Overview
The MAX232NS, produced by Texas Instruments, is a dual driver/receiver integrated circuit designed to facilitate communication between TTL/CMOS logic levels and the RS-232 serial communication standard. This device is particularly useful in applications requiring the conversion of 5V TTL/CMOS signals to RS-232 voltage levels and vice versa. The MAX232NS includes a capacitive voltage generator that enables it to operate from a single 5V power supply, making it a versatile and efficient solution for various electronic systems.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 5V |
| Operating Temperature Range | 0°C to 70°C |
| Data Rate | Up to 120 kbit/s |
| Number of Drivers/Receivers | Two drivers, two receivers |
| Input Levels | ±30V |
| Supply Current | 8mA typical |
| ESD Protection | Exceeds JESD 22 - 2000V Human-body model (A114-A) |
| Package Types | SOP (16 pins), PDIP (16 pins), SOIC (16 pins) |
| Charge-Pump Capacitors | 1µF |
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).
- Each receiver converts TIA/EIA-232-F inputs to 5V TTL/CMOS levels with a typical threshold of 1.3V and a typical hysteresis of 0.5V.
Applications
- TIA/EIA-232-F compliant systems.
- Battery-powered systems.
- Terminals.
- Modems.
- Computers.
Q & A
- What is the primary function of the MAX232NS? The MAX232NS is a dual driver/receiver that converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa.
- What is the operating voltage of the MAX232NS? The MAX232NS operates from a single 5V power supply.
- What is the maximum data rate supported by the MAX232NS? The MAX232NS supports data rates up to 120 kbit/s.
- How many drivers and receivers does the MAX232NS have? The MAX232NS includes two drivers and two receivers.
- What is the input voltage range of the MAX232NS? The MAX232NS can accept ±30V input levels.
- What is the typical supply current of the MAX232NS? The typical supply current is 8mA.
- Does the MAX232NS have ESD protection? Yes, the MAX232NS has ESD protection that exceeds JESD 22 - 2000V Human-body model (A114-A).
- What types of packages are available for the MAX232NS? The MAX232NS is available in SOP, PDIP, and SOIC packages.
- What are the charge-pump capacitor values required for the MAX232NS? The MAX232NS requires 1µF charge-pump capacitors.
- What are some common applications of the MAX232NS? Common applications include TIA/EIA-232-F compliant systems, battery-powered systems, terminals, modems, and computers.
