SN65HVD21MDREP

Introduction

The SN65HVD21MDREP is an integrated non-inverting 5 V SN65HVD21MDREP driver used to interface a TTL-level signal to the buses RS-232C (EIA/TIA-232), ISO 7093 (EIA/TIA-485) and IEEE 1394. It is designed to allow multiple drivers and receivers to communicate on one bus. This device is also commonly used in automotive applications.

Application Field

The application fields of the SN65HVD21MDREP are broad and diverse, but the most common applications involve interfacing data to and from buses, monitors, and other peripherals. Some other uses include networking, including local area networks (LANs), data exchange between computers, and home automation. The SN65HVD21MDREP can also be used in automotive applications, like monitoring engine sensors and controlling door locks, lights, and other vehicle functions.

Working Principle

The SN65HVD21MDREP driver is implemented using a non-inverting 5V CMOS driver, which allows the device to interface between the TTL-level signal and the buses RS-232, ISO 7093, and IEEE 1394. The device has an enable pin which can be used to enable or disable the driver. When enable is low, the output is disabled and left in a high-impedance state, preventing signals from entering or exiting the bus. Additionally, the SN65HVD21MDREP has also been designed with protected inputs, allowing up to 12 V tolerant inputs while providing over-voltage and reverse-polarity protection.

The SN65HVD21MDREP is designed to interface with the buses RS-232 (EIA/TIA-232), ISO 7093 (EIA/TIA-485), and IEEE 1394. It allows two or more drivers and receivers to communicate on one bus. When the control input is low, all outputs are forced to the logic 0 state and the bus is disabled, preventing signals from entering or exiting the bus. This prevents data collision, allowing multiple receivers to communicate on a single bus.

Conclusion

In conclusion, the SN65HVD21MDREP is an integrated non-inverting 5V CMOS driver used to interface between TTL-level signals and the buses RS-232, ISO 7093, and IEEE 1394. It has an enable pin which can be used to enable or disable the driver. Additionally, the device has protected inputs, allowing up to 12V tolerant inputs, and is designed to allow for multiple receivers and drivers to communicate on one bus without experiencing data collision. The broad application field of the SN65HVD21MDREP includes LANs, home automation, and automotive use.