ADM3491AR-REEL7

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The ADM3491AR-REEL7 belongs to the class of interface devices known as drivers, receivers, transceivers. These devices are important components of integrated circuits that are widely used in the fields of communication, microcontrollers, embedded systems, and analog designs. In this article, we will discuss its application field and working principle.

The ADM3491AR-REEL7 is a 3-V to 5.5-V, Low-Power, Half-Duplex, True RS- 232 Line Driver/Receiver. It works at a maximum data rate of 250kbps and can drive up to +/−25V on its RS-232 outputs. It has an internal clamp diode to allow the device to be used in a 3.3-V application with a capability of 5.5V. The device supports the Constant-Voltage Architecture and can accept a remote sense connection. In addition, the ADM3491AR-REEL7 features an on-chip ESD protection circuit, which can protect both the line driver and the transmission line.

The ADM3491AR-REEL7 provides a low-power, low-noise, true RS-232 level-shifting solution for a variety of data communications applications and is particularly well suited for applications that require both low power and fast turnaround times. It is suitable for use in applications such as industrial controllers, modems, printers, bar code scanners, and point-of-sale terminals.

In terms of its working principle, the ADM3491AR-REEL7 provides voltage translation between a 3-V to 5.5-V power supply and a true RS-232-level interface. The true RS-232 level-shifting is achieved by the use of an internal charge pump that converts the voltage of a 3-V to 5.5-V power supply to the voltage needed to achieve the desired RS-232 level. The charge pump is powered by an external capacitor and is turned off when the device is in a low-power sleep mode.

The ADM3491AR-REEL7 also provides a rich set of features that offer the flexibility to support applications in both point-to-point and multipoint communication systems. It features a low-power sleep mode, wake-on-start detection, an integrated watchdog timer, and an adjustable slew rate. The adjustable slew rate allows the device to be optimized for the desired application. The device also has an internal transmitter disable input, which can be used to disable the transmitter to reduce power consumption.

Moreover, the True RS-232 drivers of the ADM3491AR-REEL7 feature hot swap protection for the drivers and receivers, to prevent damage from hot plugging. Its overvoltage protection, as well as its ESD protection, help to ensure reliable, safe operation. The device also supports both a remote sense connection, as well as an internal clamp diode, which helps to protect the device from potential overvoltage conditions.

In summary, the ADM3491AR-REEL7 is a low-power, true RS-232 line driver/receiver that is suitable for a variety of applications, including industrial controllers, modems, printers, bar code scanners, and point-of-sale terminals. It supports a range of features, including hot swap protection, an adjustable slew rate, an internal transmitter disable input, an on-chip ESD protection circuit, and an integrated watchdog timer. These features, combined with its ability to provide voltage translation between a 3-V to 5.5-V power supply and a true RS-232-level interface, make the ADM3491AR-REEL7 a useful and highly reliable component for a wide range of industrial and consumer applications.

The specific data is subject to PDF, and the above content is for reference