SN75119DR

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The SN75119DR is an integrated differential line driver designed to interface data communications equipment with high-speed, medium-distance transmission lines. It belongs to the category of interface, drivers, receivers, transceivers and has a wide range of application fields and working principles.

Application Fields

The SN75119DR is used for standard TTL and CMOS logic levels from 5VDC to 15VDC. It can also be used in applications that require an additional level of isolation such as ground-loop elimination between the main logic circuit and the transmission line. Additionally, it is useful for driving long transmission lines with data rates of up to 10 Mbps. This makes it suitable for a wide range of applications from data acquisition, industrial control, and automotive equipment to communication systems.

Working Principle

The SN75119DR functions as an interface between two systems. It transmits and receives two different signals on two separate channels, one for each direction of communication. It also provides an extra level of isolation between the two systems. The SN75119DR is designed using bipolar technology in order to reduce the output capacitance of the device and therefore increase the noise immunity of the signal sent across the transmission line.

The SN75119DR offers a differential line driver on each channel, which consists of differentially connected two matched transistors. This pair of transistors provides a full differential signal, so it responds quickly to changes in the logical level of the data to be transmitted. Furthermore, the driver has a low output impedance, which ensures a maximum possible signal level. On the other side, the SN75119DR includes a differential line receiver, which consists of two matched transistors connected in a differential configuration. This configuration allows the receiver to detect small differences in the input voltage while also providing a good noise immunity.

The SN75119DR is designed to minimize the effects of differential noise and therefore increase the reliability of the communication. It also offers a high degree of customization with user selectable output impedance, voltage, and noise frequency. Thus, users can choose the optimal settings for their specific application.

Conclusion

The SN75119DR is an integrated differential line driver that is used in a wide variety of applications from data acquisition and industrial control to communication systems. It functions as an interface between two systems and transmits and receives signals on two separate channels. Additionally, it provides an extra level of isolation between the two systems. The SN75119DR is designed using bipolar technology to increase the noise immunity of the signal sent across the transmission line. It is also designed to minimize the effects of differential noise and therefore increase the reliability of the communication. Moreover, users can customize the output impedance, voltage, and noise frequency to meet the needs of their specific application.

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