SN75159NSRG4

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Interface technology plays an important role in virtually every digital and electromechanical system, enabling a range of functions from data transfer and communication, to media playback and image recognition. The SN75159NSRG4 is one such device, comprising an 8-bit non-inverting transceiver, suitable for use in multiple configurations and applications in the industrial, commercial, and consumer markets.

Engineered specifically for asynchronous two-way communication between data buses, the SN75159NSRG4 allows data streams to be transferred in both directions between circuits, microcontrollers, or other devices. It consists of two similar, independent parts, each handling 8 bits of data. The 1st part is classified as the transceiver, whilst the 2nd part is known as the receiver, and each features both bus-driver and bus-receiver functions.

SN75159NSRG4: Application field and Working principle

The SN75159NSRG4 is a bidirectional non-inverting transceiver, comprising 8 data lines and 2 control buses. It is designed to enable transmission from 8-bit parallel data buses in both directions, allowing a lower-speed bus and a higher-speed bus to be connected. As its core principle, the SN75159NSRG4 functions according to NRZI (Non-Return to Zero Inverse) logic.

The SN75159NSRG4 is common in multiple industrial and consumer applications. The device is capable of handling any bidirectional data communications requirements, such as microcontroller transfers, printer/scanner communication, and audio-visual data exchange. Additionally, the SN75159NSRG4 can be used in address multiplexing applications, as it can both transmit and receive 8-bit address and data streams, in synchronous mode.

In operation, the SN75159NSRG4 operates with three buses, including a single ‘data’ bus and two control buses, one labeled as ‘direction control’ and the other as ‘enable’. The data bus is connected to the receivers and transmitters of the two separate blocks. The direction control bus is used to determine whether data should flow from the transmitter to the receiver or vice versa. When the direction control bus is in the ‘low’ position, data will only flow from the transmitter, and the receiver will not accept data. When the control bus is in the ‘high’ position, data will flow from the receiver to the transmitter.

The ‘enable’ bus is used to control the direction of data movement. When the enable bus is in the ‘low’ position, the SN75159NSRG4’s drivers and receivers are enabled, allowing for transmission and reception of data. When the enable bus is in the ‘high’ position, the SN75159NSRG4’s drivers and receivers are disabled, and no data will be transmitted or received.

Conclusion

In summary, the SN75159NSRG4 is an 8-bit non-inverting transceiver. It is designed for asynchronous two-way communication between data buses and is used in multiple industrial applications, such as data transfer, communication, media playback and image recognition. The SN75159NSRG4 operates according to the NRZI logic, with three buses that enable data transmission in both directions: the data bus, the direction control bus, and the enable bus.

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