SN75LBC182DG4

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Interface - Drivers, Receivers, Transceivers: SN75LBC182DG4 Application Field and Working Principle

SN75LBC182DG4 is a four-channel bi-directional bus transceiver designed specifically to be used with a TTL bus system. This device is designed specifically to interface with a four-line bidirectional bus and features TTL-level outputs and inputs, a differential line-receiving input, and a current-source and current-sink output. This device also has multiplexed output enable (G1 and G2) control, output polarity reversal, and three-state output logic level functions. It is an ideal choice for interfacing TTL-level signals to the data bus, providing bidirectional translatability of data communication.

The SN75LBC182DG4 is a low-power device, with dissipation of less than 100 mW at 5 V, and each of its four channels use as little as 100 µA of supply current. Its bus terminal peak output voltage is equal to its supply voltage, allowing the device to be used with both Thevenin and non-Thevenin bus systems. The device also has wide temperature range which can be used in applications requiring high temperature operation.

Application Field

The SN75LBC182DG4 is an ideal choice for a wide range of applications requiring an efficient, low-cost, and reliable transceiver solution. It is widely used in all types of bus systems, including I²C, I²S, SPI, Serial Peripheral Interface Bus (SPIB), Inter-Integrated Circuit Bus (I²CB), and Universal Asynchronous Receiver/Transmitter (UART) applications. It is also used in various control and instrumentation systems, such as motor control systems, weighing scales, temperature and pressure control systems, and embedded microcontroller applications.

The SN75LBC182DG4 can also be used in digital signal processing applications requiring high noise immunity, such as audio and visual equipment. It is also used in medical equipment, LED lighting, automation systems, and many other systems that require reliable data transmission.

Working Principle

The SN75LBC182DG4 uses an innovative technique for bidirectional translatability of data communication. It has two differential data inputs, A and B, that are paired together across a differential bus. When an input signal is applied to the A input, a voltage-level shift occurs such that the B input emits a complementary signal in relation to A. The A input also has a provision for being connected directly to the B input, thus eliminating the need for a separate data input.

In order to send or receive data, the SN75LBC182DG4 needs to be enabled. This is done with the use of two enable pins, G1 and G2. These pins can be connected to another device to allow the SN75LBC182DG4 to act as a transmitter or receiver, depending on the data that is being sent or received. The G1 and G2 pins also have polarity control and a three-state output logic level. This enables the device to act as a 3-state buffer, where the devices can enter a high-impedance state and remain inactive.

The SN75LBC182DG4 has several features that enable it to be used in a wide range of applications, including its low-power consumption, high noise immunity, wide temperature range, and its ability to provide bidirectional translatability of data communication. These features make the SN75LBC182DG4 the ideal choice for a variety of TTL-level bus systems.

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