MC1489N

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MC1489N is a high-performance line driver IC (integrated circuit) designed to provide bidirectional signal communication between signal sources and lines over long distances. It offers a low-power CMOS solution for driving and receiving serial (bidirectional) data. Line drive strength and line termination can be configured to match most popular data transmission formats such as RS-232/RS-422/RS-485. It features both high-speed and low-power transmission modes that are selected via the SHUTDOWN pin.

The MC1489N is a popular choice for interface applications requiring long-distance data transmission. It is suitable for a wide variety of applications such as automotive networking, security systems, industrial automation, control systems and communications systems.

Application fields

The MC1489N is used in a variety of applications, including automotive, industrial, and consumer electronics. Some common applications for the device are:

• Automotive networking: The MC1489N is ideal for automotive applications that require long-distance communication and/or data acquisition, such as CAN bus systems, automotive diagnostics, and engine control.
• Industrial automation: The device is well-suited for industrial applications that need the robustness and long-range performance of communication over long distances, such as factory automation and process control.
• Consumer electronics: The MC1489N is also used in consumer electronics products, such as consumer audio, video, and telecommunication devices.

Working principle

The MC1489N is a line driver IC. It is designed to provide bidirectional signal communication over long distances. The IC is based on a CMOS technology and provides low-power solutions for driving and receiving serial (bidirectional) data. The device contains two drivers, one for the transmit direction and one for the receive direction.

In the transmit mode, an external signal source is connected to the device’s input and the device’s output is connected to a high-speed line or bus. The MC1489N line driver then amplifies the input signal and drives it over long distances. The device also provides line drive strength and line termination that can be configured to match most popular data transmission formats such as RS-232/RS-422/RS-485.

In the receive mode, the device’s input is connected to the line or bus and the signal received is amplified by the device’s receiver and output as a signal to the external signal source. The device is designed to operate with a wide range of signal types, including differential and single-ended signals.

The device is also designed to provide high-speed and low-power transmission modes, which are selected via the SHUTDOWN pin. In the high speed mode, the MC1489N is able to support data transmission speeds up to 10 Mbps, while in the low power mode, the device operates at lower power consumption levels.

The differential bus signals produced by the device can be connected to standard I/O connectors for easy system integration. The MC1489N is specified for operation over –40°C to +85°C temperature ranges and is available in various package types.

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