MAX3221CDB

The MAX3221CDB is a single-channel RS-232 transceiver IC that provides a reliable interface between TTL/CMOS logic levels and RS-232 voltage levels. This IC features a data rate of up to 120kbps and includes a low-power shutdown mode for power-saving applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• IN: Input Pin
• OUT: Output Pin
• VCC: Positive Power Supply
• GND: Ground Connection
• SHDN: Shutdown Pin
• TX: Transmitter Output
• RX: Receiver Input
• RI: Ring Indicator
• DCD: Data Carrier Detect
• DTR: Data Terminal Ready
• DSR: Data Set Ready
• RTS: Request To Send
• CTS: Clear To Send
• RI: Ring Indicator
• GND: Ground Connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the MAX3221CDB IC for a visual representation.

Key Features

• Single-Channel RS-232 Transceiver: Provides a single channel for bi-directional communication.
• Data Rate: Supports data rates up to 120kbps, suitable for various serial communication applications.
• Low-Power Shutdown Mode: Features a low-power shutdown mode for power-saving applications.
• Wide Operating Voltage Range: Operates from a single +3.0V to +5.5V supply, making it compatible with a wide range of systems.
• ESD Protection: Includes ±15kV ESD protection on the RS-232 pins, ensuring robust operation in harsh environments.
• Compact Design: Available in a space-saving 16-pin SSOP package.

Note: For detailed technical specifications, please refer to the MAX3221CDB datasheet.

Application

• Embedded Systems: Ideal for use in embedded systems requiring RS-232 communication.
• Telecommunications: Suitable for telecommunications equipment that interfaces with RS-232 devices.
• Data Logging: Used in data logging applications where serial communication is necessary.

Functionality

The MAX3221CDB is a single-channel RS-232 transceiver that facilitates communication between microcontrollers and RS-232 devices by converting TTL/CMOS logic levels to RS-232 voltage levels and vice versa.

Usage Guide

• Power Supply: Connect VCC (Pin 3) to the supply voltage (3.0V to 5.5V).
• Data Connections: Connect the input and output pins according to the desired communication configuration.
• Shutdown Control: Use the SHDN (Pin 5) pin to enable or disable the low-power shutdown mode.

Frequently Asked Questions

Q: What is the maximum data rate supported by the MAX3221CDB?
A: The MAX3221CDB supports data rates up to 120kbps, suitable for various serial communication applications requiring moderate speed.

Q: Can the MAX3221CDB operate at lower supply voltages?
A: Yes, the MAX3221CDB can operate from a minimum supply voltage of 3.0V, enabling compatibility with low-power systems.