The MAX3221CDBE4 is a high-performance, single-channel RS-232 line driver/receiver from Texas Instruments designed to operate at a 3-V to 5.5-V VCC supply. It is suitable for a variety of applications that require a reliable interface for data transmission, including industrial controls, telecommunications, and networking equipment.
Key Features
- Integrated Charge Pump Circuitry: The device incorporates charge pump circuitry that generates the ±10V RS-232 transceiver output levels, eliminating the need for external dual power supplies and simplifying design.
- Low Power Consumption: It features a low-power shutdown mode, which reduces power consumption and extends battery life in portable applications.
- Electrostatic Discharge (ESD) Protection: The MAX3221CDBE4 is equipped with ESD protection exceeding ±15 kV using the Human Body Model, which enhances the robustness of the device in harsh environments.
- Autosensing Power-Down Feature: The device automatically enters a low-power shutdown state when the RS-232 cable is disconnected or the connected peripherals are turned off, further reducing power usage.
- Flow-Through Pinout: A flow-through pinout simplifies the PCB layout and reduces cross-talk by keeping the Tx and Rx lines separate.
Applications
The MAX3221CDBE4 is an ideal choice for applications that require a single RS-232 interface port. These include:
- Portable and Battery-Powered Equipment
- Notebook and Laptop Computers
- Handheld Equipment
- Peripherals
- Point-of-Sale Systems
Technical Specifications
Parameter
Value
Supply Voltage
3 V to 5.5 V
Data Rate
250 kbps
Number of Drivers/Receivers
1/1
Operating Temperature Range
-40°C to +85°C
Package/Case
SSOP-16
The MAX3221CDBE4 is available in a compact SSOP-16 package, making it a space-saving solution for modern electronic systems. With its robust features and reliable performance, this Texas Instruments product is a top choice for designers looking to implement RS-232 communication with minimal external components.
