Overview
The MAX232C/D is a dual driver/receiver integrated circuit produced by Analog Devices Inc./Maxim Integrated. It is designed to convert signals between TIA/EIA-232-F (RS-232) serial ports and TTL-compatible digital logic circuits. This component is particularly useful for devices that require RS-232 communication but only have a single 5-V power supply available.
Key Specifications
| Specification | Value |
|---|---|
| Supply Voltage | 5 V |
| Supply Current | Typical 8 mA |
| Data Rate | Up to 120 kbit/s |
| Input Voltage Range | ±30 V |
| Output Voltage Levels | ±7.5 V (TIA/EIA-232-F) |
| Receiver Threshold | Typical 1.3 V |
| Receiver Hysteresis | Typical 0.5 V |
| ESD Protection | Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) |
| Package Types | SOIC (16), PDIP (16), SOP (16) |
Key Features
- Meets or exceeds TIA/EIA-232-F and ITU Recommendation V.28 standards
- Operates from a single 5-V power supply with on-chip charge pumps and external capacitors
- Includes two drivers and two receivers
- Low supply current: typical 8 mA
- ESD protection exceeds JESD 22 – 2000-V Human-Body Model (A114-A)
- Outputs are protected against shorts to ground
Applications
- TIA/EIA-232-F interfaces
- Battery-powered systems
- Terminals and modems
- Computers and serial communication devices
Q & A
- What is the primary function of the MAX232C/D?
The MAX232C/D is a dual driver/receiver that converts signals between TIA/EIA-232-F (RS-232) serial ports and TTL-compatible digital logic circuits.
- What is the supply voltage for the MAX232C/D?
The MAX232C/D operates from a single 5-V power supply.
- What is the maximum data rate supported by the MAX232C/D?
The MAX232C/D supports data rates up to 120 kbit/s.
- What is the input voltage range for the MAX232C/D receivers?
The receivers can accept input voltages up to ±30 V.
- What is the typical threshold and hysteresis for the MAX232C/D receivers?
The receivers have a typical threshold of 1.3 V and a typical hysteresis of 0.5 V.
- Does the MAX232C/D have ESD protection?
Yes, the MAX232C/D has ESD protection that exceeds JESD 22 – 2000-V Human-Body Model (A114-A).
- What are the common applications of the MAX232C/D?
Common applications include TIA/EIA-232-F interfaces, battery-powered systems, terminals, modems, and computers.
- Can the MAX232C/D be used in safety-critical applications?
No, the MAX232C/D should not be used in safety-critical applications without proper evaluation and validation.
- What are the available package types for the MAX232C/D?
The MAX232C/D is available in SOIC (16), PDIP (16), and SOP (16) packages.
- Is the MAX232C/D backward compatible with other versions?
The MAX232C/D is backward compatible with the original MAX232 and may also be compatible with later versions like the MAX232A.
