SN75179BPG4

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Interface - Drivers, Receivers, Transceivers

The SN75179BPG4 is a dual-channel monolithic high speed differential line driver designed for digital data transmission over shielded twisted pair (STP) cables. Each driver channel is designed to drive up to forty-four unshielded twisted pair (UTP) or up to sixteen STP lines. The SN75179BPG4 is suitable for withstanding load variation and will recover quickly from overerror conditions. It is ideal for applications requiring hot-swap capability such as modular systems.

Application Field

The SN75179BPG4 is a high-performance line driver suitable for digital data transmission over shielded twisted pair cables. It is suitable for use in HOT-swap applications such as modular systems. The low distortion characteristics make it an excellent choice for driving telephone lineinterface circuitry, and the driver performs well in high frequency data acquisition systems.

Working Principle

The SN75179BPG4 has a differential input stage consisting of two differential current-mirror pairs to amplify the differential input signal applied to the A and B pins. Differential outputs from the differential current-mirror pairs are connected to the load by way of a common-mode feedback loop, which ensures that the output signal amplitude and common-mode voltage remain constant in spite of load fluctuations.

The SN75179BPG4 uses a differential input, or balanced-input, to isolate both signal and noise signals between the two driver channels. By having two complementary output signals, one signal carrying the signal and the other canceling out the noise signal, this driver machine can ensure high noise cancellation and big distortion reduction.

The SN75179BPG4 is constructed on its own board and can be easily plugged into other circuitry. It has a supply voltage range of 4.75V to 5.25V and can operate up to 100MHz. The driver features slew-rate control, output enable and zero detect, as well as active-high/active-low pin options.

Conclusion

In summary, the SN75179BPG4 is a high-performance line driver designed for use in digital data transmission applications. It has a differential input stage to isolate signal and noise signals between the two driver channels, a common-mode feedback loop for load containment, and an output slew-rate control for distortion reduction. It is also suitable for hot-swap applications such as modular systems and is capable of operating up to 100MHz.

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