MAX2421EAI+T

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MAX2421EAI+T, a full-duplex transceiver with programmable signal voltage control, is a low-voltage RS-232 line driver/receiver. MAX2421EAI+T combines an integrated line driver and receiver with voltage selectable inputs or outputs to meet the requirements of industrial, automotive, and automotive serial connection applications. The MAX2421EAI+T uses a simple 3-wire interface serial protocol that allows simple and flexible communication between two devices.

The MAX2421EAI+T is comprised of an integrated line driver and receiver. The MAX2421EAI+T allows the user to program the output signal voltage level of the line driver via the programming inputs, UART_VREF and REF_VREF. The programmability of the output signal voltage of the line driver allows the MAX2421EAI+T to support various signal voltage requirements of different serial communication interfaces.

The integrated line receiver allows for a high degree of noise immunity as well as supporting various signal levels. The receiver signal threshold level is programmable via the RX_VREFTRIP and RX_VREFINP programming inputs. The MAX2421EAI+T also has a separate signal sense signal (RXSENSE0) in addition to the receiver\'s data signal input, RXDATA. RXSENSE0 allows the MAX2421EAI+T to support connections with both active-low and active-high signal sense.

The 3-wire serial communications protocol used by the MAX2421EAI+T allows a simple and flexible communication link between two devices. The protocol is comprised of the following signals: Address and Data signals (ADDR0 and ADDR1), and the Start signal (START). The Address and Data signals are used to transfer 8-bit data words between two devices. Data is transferred with a maximum bit rate of 10kbit/s in each direction, while the two Address signals can have a maximum bit rate of 80kbit/s.

The START signal controls the flow of data between two devices. This signal is used by a master device to initiate data transfers, and then by the slave device to acknowledge the transfers. The START signal can be programmed to have either a positive- or negative-going edge.

Finally, the MAX2421EAI+T comes with more advanced features such as auto-retry capability, automatic data rate switching, and programmable voltage levels for improved noise-immunity and flexibility.

MAX2421EAI+T applications include industrial and automotive serial connection applications, such as connecting PCs and microcontrollers in medical, automotive, and consumer electronic systems. The programmable output voltage level allows the MAX2421EAI+T to be used in a variety of applications with different signal requirement levels. Additionally, the integrated line receiver’s signal threshold level can be programmed to meet various signal voltages enabling the MAX2421EAI+T to be used in noisy environments.

To summarize, the MAX2421EAI+T is a full-duplex transceiver that combines an integrated line driver and receiver with voltage selectable inputs or outputs. The programmable output voltage level allows the transceiver to be used in a variety of applications with different signal requirements. Additionally, the integrated line receiver\'s signal threshold level can be programmed to meet various signal voltages enabling the MAX2421EAI+T to be used in noisy environments. Moreover, the 3-wire serial communications protocol used by the MAX2421EAI+T allows a simple and flexible communication link between two devices. These features make the MAX2421EAI+T ideal for use in industrial and automotive serial connection applications.

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