Texas Instruments

SN75C3221DBR  

Drivers, Receivers, Transceivers

SN75C3221DBR Description

The SN75C3221DBR is a high-performance transceiver designed for RS232 communication, manufactured by Texas Instruments. This device features a full-duplex communication capability with one driver and one receiver, making it highly suitable for applications requiring reliable data transmission. The transceiver operates within a voltage range of 3V to 5.5V and supports a data rate of up to 1Mbps, ensuring efficient and fast communication. With a receiver hysteresis of 500 mV, the SN75C3221DBR provides robust signal integrity and noise immunity. The operating temperature range of 0°C to 70°C ensures reliable performance in a variety of environmental conditions. The device is packaged in a 16-lead small outline package (SSOP) and is available in tape and reel format, making it ideal for surface mount applications.

SN75C3221DBR Features

• Full-Duplex Communication: The SN75C3221DBR supports full-duplex communication, allowing simultaneous data transmission and reception, which is essential for applications requiring high data throughput and real-time communication.
• High Data Rate: With a data rate of up to 1Mbps, this transceiver ensures fast and efficient data transfer, making it suitable for high-speed communication systems.
• Wide Operating Voltage Range: The device operates within a voltage range of 3V to 5.5V, providing flexibility in power supply options and compatibility with various systems.
• Receiver Hysteresis: The 500 mV receiver hysteresis enhances signal integrity and noise immunity, ensuring reliable data transmission even in noisy environments.
• Surface Mount Packaging: The 16-lead SSOP package and tape and reel format are ideal for surface mount applications, enabling efficient manufacturing processes and compact design integration.
• Extended Temperature Range: The operating temperature range of 0°C to 70°C ensures reliable performance in a wide range of environmental conditions, making it suitable for industrial and commercial applications.
• Regulatory Compliance: The SN75C3221DBR is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards.

SN75C3221DBR Applications

The SN75C3221DBR is ideal for a variety of applications requiring reliable and efficient RS232 communication. Some specific use cases include:

• Industrial Automation: In industrial settings, the transceiver can be used for communication between programmable logic controllers (PLCs), sensors, and other industrial devices.
• Telecommunications: The device is suitable for use in telecommunication systems where reliable data transmission is crucial, such as in modems and data communication equipment.
• Computer Peripherals: The transceiver can be integrated into computer peripherals like printers, scanners, and external hard drives to facilitate data transfer between the peripheral and the host system.
• Medical Equipment: In medical devices requiring RS232 communication, the SN75C3221DBR ensures reliable data transfer, which is critical for patient monitoring and diagnostic equipment.

Conclusion of SN75C3221DBR

The SN75C3221DBR from Texas Instruments is a versatile and high-performance RS232 transceiver that offers significant advantages over similar models. Its full-duplex communication capability, high data rate, and wide operating voltage range make it suitable for a variety of applications. The device's robust signal integrity, noise immunity, and extended temperature range ensure reliable performance in diverse environments. With its surface mount packaging and regulatory compliance, the SN75C3221DBR is an ideal choice for designers looking to integrate a reliable and efficient RS232 communication solution into their systems.

SN75C3221DBR Documents

Download datasheets and manufacturer documentation for SN75C3221DBR

Datasheets :

SN65/75C3221      

PCN Obsolescence/ EOL :

Mult Dev A/T 22/Jul/2021      

HTML Datasheet :

SN65/75C3221